Swapan Kumar Gayen
Physics Department, The City College of New York
160 Convent Avenue, New York, NY 10031
Phone: (212) 650-5556, 5531 Fax: (212) 650-5530
E-mail: gayen@sci.ccny.cuny.edu
EDUCATION
Ph. D., Physics, University of Connecticut, Storrs, 1984
Thesis: Two-photon absorption spectroscopy of trivalent cerium ion in calcium
fluoride
M. S., Physics, University of Connecticut, Storrs, 1980
M. Sc., Physics, University of Dacca, Dacca, Bangladesh, 1977
Thesis: The average level-width, level-density, and fluctuations in the total neutron
cross-section of silver
B. Sc. (Honors), University of Dacca, Dacca, Bangladesh, 1975
EMPLOYMENT
Professor, Physics, City College of New York, New York, New York, 2007-present
Doctoral Faculty, Ph.D. Program in Engineering, the Graduate School and University Center
of CUNY, 2008 – Present
Doctoral Faculty, Ph.D. Program in Physics, the Graduate School and University Center of
CUNY, 2003 – Present
Associate Professor, Physics, City College of New York, New York, New York, 2001-06
Senior Member of Research Staff, Institute for Ultrafast Spectroscopy and Lasers, and New
York State Center for Advanced Technology for Ultrafast Photonic Materials and
Applications, City College of New York, New York, 1995-2001
Assistant Professor, Department of Physics and Engineering Physics, Stevens Institute of
Technology, Hoboken, New Jersey, 1988-95
Navy-ASEE (American Society for Engineering Education) Summer Faculty Research
Fellow, Naval Air Warfare Center Aircraft Division, Warminster, Pennsylvania,
Summer, 1994
Research Associate, Institute for Ultrafast Spectroscopy and Lasers, The City College of
New York, New York, 1984-88
Research Assistant, Department of Physics, University of Connecticut, Storrs, 1981-84
Teaching Assistant, Department of Physics, University of Connecticut, Storrs, 1978-81
Lecturer, Department of Physics, Bangladesh University of Engineering and Technology,
Dacca, December 1977 to August 1978
Last revised 11/4/2008
National Science and Technology Fellow, Department of Physics, University of Dacca,
Dacca, Bangladesh, July - December, 1977
PERSONAL
Born March 1, 1954. Married with three children. Naturalized U. S. citizen
PROFESSIONAL AFFILIATION
Member, American Physical Society
Member, Optical Society of America
Member, New York Academy of Sciences
MAJOR RESEARCH AREAS
• Biomedical optical imaging and spectroscopic diagnostics
• Optical imaging and signal transmission through turbid media
• Physics of nanoscale photonic materials
• Development and characterization of tunable solid-state lasers
• Ultrafast excite-and-probe absorption, four-wave mixing, multiphoton excitation,
and Raman spectroscopy
• Optical and spectroscopic properties of impurity ion-doped solids
• Nonlinear optical properties of activated solids, organics and polymers
• Optical filters for remote-sensing applications
AWARDS & HONORS
• Guest Editor (with R. R. Alfano and S. G. Demos), Special Issue on Lasers in Biology
and Medicine of the IEEE Journal of Selected Topics in Quantum Electronics, Vol. 9,
No. 2, March/April 2003.
• Jess H. Davis Memorial Award for Excellence in Research, Stevens Institute of
Technology, 1994.
• Member, Sigma Xi, the Science Research Society, 1990.
• University of Connecticut Doctoral Dissertation Fellowship, 1984.
• Member, Sigma Pi Sigma, the Physics Honor Society, 1980.
PUBLICATIONS
Patents
5.
R. R. Alfano, J. Ying, W. Cai, and S. K. Gayen, "Methods of improving line-of-sight
wireless optical communication through adverse environmental conditions," U. S. Patent
Number: 7,106,972 awarded September 12, 2006.
4.
R. R. Alfano, S. K. Gayen, and M. E. Zevallos, "Spectroscopic and time-resolved optical
methods and apparatus for imaging objects in turbid media,” U. S. Patent Number:
6,665,557 B1 awarded December 16, 2003.
3.
R. R. Alfano, W. Cai, and S. K. Gayen, "Time-resolved diffusion tomographic 2D and 3D
imaging in highly scattering turbid media," U. S. Patent Number: 6,108,576 awarded
August 22, 2000.
2
Last revised 11/04/08
2.
R. I. Billmers, S. K. Gayen, and M. F. Squicciarini, "Excited-State Polarization Altering
Filter," U. S. Patent Number: 5,721,632 awarded February 24, 1998.
1.
R. R. Alfano, V. Petricevic, and S. K. Gayen, "Chromium-doped forsterite laser system,"
U. S. Patent Number: 4,932,031 awarded June 5, 1990.
Patent Pending
1.
R. R. Alfano, M. Xu, M. Alrubaiee, and S. K. Gayen, “Optical tomography using
independent component analysis for detection and localization of targets in turbid media,”
Provisional patent application #60/633,412 submitted December 7, 2004.
Refereed Journal Articles
43.
M. Xu, M. Alrubaiee, S. K. Gayen and R. R. Alfano, “Optical diffuse imaging of an ex
vivo model cancerous human breast using independent component analysis,” IEEE J.
Select. Topics Quantum Electron. 14, 43 (2008).
42.
S. K. Gayen, C. Gonzalez, V. Balogh-Nair, M. Brito, B. B. Das, G. Comanescu, X. C.
Liang, A. H. Byro, David. L. V. Bauer, M. Alrubaiee, and R. R. Alfano, “Optical
Spectroscopy of a Hybrid CdS-Dendrimer Nanocomposite,” J. Opt. Soc. Am. B 24, 3064
(2007). Also published in Vol. 3 Issue 1 (January 29, 2008) of the Virtual Journal for
Biomedical Optics (VJBO).
http://vjbo.osa.org/virtual_issue.cfmhttp://www.opticsinfobase.org/abstract.cfm?URI=josa
b-24-12-3064
41.
W. Cai, Xiaohui Ni, S. K. Gayen and R. R. Alfano, “Analytical cumulant solution of the
vector radiative transfer equation investigates backscattering of circularly polarized light
from turbid media,” Phys. Rev. E 74, 056605 (2006).
40.
M. Alrubaiee, M. Xu, S. K. Gayen, and R. R. Alfano, “Three-dimensional localization and
cross section reconstruction of fluorescent targets in ex vivo breast tissue using independent
component analysis,” Appl. Phys. Lett. 89, 133902 (2006).
39.
M. Alrubaiee, M. Xu, S. K. Gayen, M. Brito, and R. R. Alfano, “Three-dimensional optical
tomographic imaging of objects in tissue-simulating turbid medium using independent
component analysis,” Appl. Phys. Lett. 87, 191112 (2005).
38.
M. Alrubaiee, S. K. Gayen, R. R. Alfano, and J. A. Koutcher, “Spectral and temporal nearinfrared imaging of ex vivo cancerous and normal human breast tissues,” Technology in
Cancer Research and Treatment 4, 455-482 (2005).
37.
K. G. Phillips, M. Xu, S. K. Gayen, and R. R. Alfano, “Time-resolved ring structure of
circularly polarized beams backscattered from forward scattering media,” Opt. Express 13,
7954-7969 (2005).
36.
M. Xu, M. Alrubaiee, S. K. Gayen and R. R. Alfano, “Three-dimensional optical imaging
of objects in a turbid medium using independent component analysis: simulational study,”
J. Biomed. Opt. 10, 051705 (2005).
35.
M. Xu, M. Alrubaiee, S. K. Gayen and R. R. Alfano, “Three-dimensional localization and
optical imaging of objects in turbid media using independent component analysis,” Appl.
Opt. 44, 1889 (2005).
3
Last revised 11/04/08
34.
M. E. Zevallos, S. K. Gayen, M. Alrubaiee, and R. R. Alfano, “Time-gated backscattered
ballistic light imaging of objects in turbid water,” Appl. Phys. Lett. 86, 011115 (2005).
33.
S. K. Gayen, M. Alrubaiee, H. E. Savage, S. P. Schantz, and R. R. Alfano, “Parotid gland
tissues investigated by picosecond time-gated and spectroscopic imaging techniques,”
IEEE J. Select. Topics Quantum Electron. 7, 906 (2001).
32.
S. K. Gayen, M. E. Zevallos, and R. R. Alfano, "Near-infrared laser spectroscopic imaging:
a step towards diagnostic optical imaging of human tissues," Lasers Life Sci. 8, 187
(1999).
31.
W. Cai, S. K. Gayen, M. Xu, M. Zevallos, M. Alrubaiee, M. Lax, and R. R. Alfano,
"Optical three-dimensional inverse image reconstruction of objects in turbid media from
ultrafast time-sliced optical transmission measurements," Appl. Opt. 38, 4237 (1999).
30.
S. K. Gayen and R. R. Alfano, “Sensing lesions in tissues with light,” Opt. Express 4, 475
(1999).
29.
M. Zevallos, S. K. Gayen, B. B. Das, M. Alrubaiee, R. R. Alfano, “Picosecond electronic
time-gated imaging of bones in tissues,” IEEE J. Select. Topics Quantum Electron. 5, 916
(1999).
28.
S. K. Gayen, M. E. Zevallos, M. Alrubaiee, J. M. Evans, and R. R. Alfano, "Twodimensional near-infrared transillumination imaging of biomedical media with a
chromium-doped forsterite laser," Appl. Opt. 37, 5327 (1998).
27.
Q. Fu, F. Seier, S. K. Gayen, and R. R. Alfano, "A high-average-power, kilohertzrepetition-rate, sub-100-fs Ti:sapphire amplifier system," Opt. Lett. 22, 712 (1997).
26.
K. E. Gonsalves, G. Carlson, X. Chen, S. K. Gayen, R. Perez, M. Jose-Yacaman,
"Synthesis and nonlinear optical characterization of nanostructured gold/polymer
composites and suspensions," Nanostructured Materials 7, 293 (1996).
25.
R. I. Billmers, S. K. Gayen, M. F. Squicciarini, V. M. Contarino., W. J. Scharpf, and D. A.
Alocca, "Experimental demonstration of an excited-state Faraday filter at 532 nm," Opt.
Lett. 20, 106 (1995).
24.
G. S. Nolas, V. G. Tsoukala, S. K. Gayen, and Glen A. Slack, "Intra-4f electronic Raman
scattering in cerium-doped scandium oxide and barium gadolinium tantalate," J. Lumin. 63,
124 (1995).
S. K. Gayen, R. I. Billmers, Guangning Yang, V. M. Contarino, M. F. Squicciarini, D. M.
Alocca, W. J. Scharpf, and P. R. Herczfeld, "Induced-dichroism excited atomic line filter at
532 nm," Opt. Lett. 20, 1427 (1995).
23.
22.
Y. M. Cheung and S. K. Gayen, "Optical nonlinearities of tea studied by the Z-scan and
the four wave-mixing techniques," J. Opt. Soc. Am. B 11, 636 (1994).
21.
Bin Qing Xie, Y. M. Cheung and S. K. Gayen, "Intra-4f2 two-photon transitions in Pr3+:
LiYF4," J. Lumin. 60/61, 661 (1994).
20.
Y. M. Cheung and S. K. Gayen, "Excited-state absorption in Pr3+:Y3Al5O12," Phys. Rev. B
49, 14 827 (1994).
4
Last revised 11/04/08
19.
G. S. Nolas, V. G. Tsoukala, S. K. Gayen, and Glen A. Slack, "Electronic-Ramanscattering study of the low-lying energy-levels of trivalent cerium-doped yttria," Phys. Rev.
B 50, 150 (1994).
18.
G. S. Nolas, V. G. Tsoukala, S. K. Gayen, and Glen A. Slack, "Site-selective electronic
Raman excitation spectroscopy of the lowest 4fÆ5d transitions in Ce3+:Y2O3," Opt. Lett.
19, 1574 (1994).
17.
Bin Qing Xie and S. K. Gayen, "Resonance enhancement of two-photon transitions to the
second excited 4f5d state in Pr3+:Y3Al5O12," Phys. Rev. B 47, 5557 (1993).
16.
S. K. Gayen and Bin Qing Xie, "Interconfigurational two-photon transitions in Nd3+:
Y3Al5O12," J. Opt. Soc. Am. B 10, 993 (1993).
15.
S. K. Gayen, Bin Qing Xie, and Y. M. Cheung, "Two-photon excitation of the lowest 4f2Æ
4f5d near-ultraviolet transitions in Pr3+:Y3Al5O12," Phys. Rev. B 45, 20 (1992).
14.
S. K. Gayen, W. B. Wang, V. Petricevic, S. G. Demos, and R. R. Alfano, "Picosecond
excite-and-probe absorption measurement of nonradiative transition dynamics in emerald,"
J. Lumin. 47, 181 (1991).
13.
V. Petricevic, S. K. Gayen, and R. R. Alfano, "Near infrared tunable operation of
chromium-doped forsterite laser," Appl. Opt. 28, 1609 (1989).
12.
V. Petricevic, S. K. Gayen, and R. R. Alfano, "Continuous-wave laser operation of
chromium-doped forsterite," Opt. Lett. 14, 612 (1989).
11.
D. S. Hamilton, S. K. Gayen, G. J. Pogatshnik, R. D. Ghen, and W. J. Miniscalco, "Optical
absorption and photoionization measurements from the excited states of Ce3+:Y3Al5O12,"
Phys. Rev. B 39, 8807 (1989).
10.
V. Petricevic, S. K. Gayen, R. R. Alfano, K. Yamagishi, and K. Moriya, "Laser action in
chromium-doped forsterite," Appl. Phys. Lett. 52, 1040 (1988).
9.
V. Petricevic, S. K. Gayen, and R. R. Alfano, "Laser action in chromium-activated
forsterite for near-infrared excitation," Appl. Opt. 27, 4162 (1988).
8.
V. Petricevic, S. K. Gayen, and R. R. Alfano, "Laser action in chromium-activated
forsterite for near-infrared excitation: is Cr4+ the lasing ion?" Appl. Phys. Lett. 53, 2590
(1988).
7.
S. K. Gayen, W. B.Wang, V. Petricevic, K. M. Yoo, and R. R. Alfano, "Picosecond exciteand-probe absorption measurement of intra-2EgE3/2-state vibrational relaxation time in
Ti3+: Al2O3," Appl. Phys. Lett. 50, 1494 (1987).
6.
S. K. Gayen, W. B. Wang, V. Petricevic, and R. R. Alfano, "Nonradiative transition
dynamics in alexandrite," Appl. Phys. Lett. 49, 437 (1986).
5.
S. K. Gayen, D. S. Hamilton, and R. H. Bartram, "Analysis of the lowest 4f-->5d twophoton transition in Ce3+:CaF2," Phys. Rev. B 34, 7517 (1986).
4.
S. K. Gayen, W. B. Wang, V. Petricevic, R. Dorsinville, and R. R. Alfano, "Picosecond
excite-and-probe absorption measurement of the 4T2-state nonradiative lifetime in ruby,"
Appl. Phys. Lett. 47, 455 (1985).
5
Last revised 11/04/08
3.
S. K. Gayen, G. J. Pogatshnik, and D. S. Hamilton, "Two-photon excitation of higher 5d
states in Ce3+:CaF2," J. Lumin. 31/32, 260 (1984).
2.
G. J. Pogatshnik, S. K. Gayen, and D. S. Hamilton, "Laser induced defect centers in
Ce3+:CaF2," J. Lumin. 31/32, 251 (1984).
1.
S. K. Gayen and D. S. Hamilton, "Two-photon excitation of the lowest 4f-->5d nearultraviolet transitions in Ce3+:CaF2," Phys. Rev. B 28, 3706 (1983).
Other Publications (Conference Proceedings, Book Chapters, Community Journals etc.)
34.
V. Sriramoju, A. Alimova, R. Chakraverty, A. Katz, S. K. Gayen, L. Larsson, H. E.
Savage, and R. R. Alfano, “Raman spectroscopic study of oxidative stress induced changes
in mice skeletal muscles,” Proceedings of SPIE Vol. 6853, 685315 (2008).
33.
Xu, M., Alrubaiee, M., Gayen, S. K., and Alfano, R. R., “Determination of light
absorption, scattering and anisotropy factor of a highly scattering medium using
backscattered circular polarized light.” Proceedings of SPIE Vol. 6435, 64350J, 2007.
32.
Ni, X., Kartazayeva, S. A., Wang, W. B., Cai, W., Gayen, S. K. and Alfano, R. R.
“Polarization memory effect and visibility improvement in turbid media.” Proceedings of
SPIE Vol. 6434, 64340N, 2007.
31.
Xu, M., Alrubaiee, M., Gayen, S. K., and Alfano, R. R. “Optical high resolution cross
section imaging of a human breast model using independent component analysis in CW
and time domain.” Proceedings of SPIE, Vol.6434, 643416, 2007.
30.
K. G. Phillips, M. Xu, S. K. Gayen, and R. R. Alfano, “Time-resolved ring structure of
circularly polarized beams backscattered from forward scattering layered structures,” in
Optical Biopsy VI, edited by R. R. Alfano and A. Katz, Proceedings of SPIE Vol. 6091
(SPIE, Bellingham, WA 2006) 609109.
29.
W. Cai, M. Alrubaiee, S. K. Gayen, M. Xu, and R. R. Alfano, “Three-dimensional optical
tomography of objects in turbid media using the ‘round-trip matrix,” in Optical
Tomography and Spectroscopy of Tissue VI, edited by Britton Chance, Robert R. Alfano,
Bruce J. Tromberg, Mamoru Tamura, Eva M. Sevick-Muraca, Proceedings of SPIE, Vol.
5693 (SPIE, Bellingham, WA, 2005), pp. 4-9. Conference Proceedings.
28.
M. Alrubaiee, M. Xu, S. K. Gayen, and R. R. Alfano, “Fluorescence optical tomography
using independent component analysis to detect small objects in turbid media,” in Optical
Tomography and Spectroscopy of Tissue VI, edited by Britton Chance, Robert R. Alfano,
Bruce J. Tromberg, Mamoru Tamura, Eva M. Sevick-Muraca, Proceedings of SPIE Vol.
5693 (SPIE, Bellingham, WA, 2005), pp. 528 – 535.
27.
M. Xu, M. Alrubaiee, S. K. Gayen, and R. R. Alfano, “Optical tomography using
independent component analysis to detect absorptive, scattering, or fluorescent
inhomogeneities in turbid media,” in Optical Tomography and Spectroscopy of Tissue VI,
edited by Britton Chance, Robert R. Alfano, Bruce J. Tromberg, Mamoru Tamura, Eva M.
Sevick-Muraca, Proceedings of SPIE Vol. 5693 (SPIE, Bellingham, WA, 2005), pp. 4-9.
Conference Proceedings.
26.
M. Alrubaiee, M. Xu, S. K. Gayen, W. Cai, and R. R. Alfano, “Time-resolved and quasicontinuous wave three-dimensional tomographic imaging of objects in tissue-like turbid
6
Last revised 11/04/08
media,” in Femtosecond Laser Applications in Biology, edited by Sigrid Avrillier, Jean
Michel and Tualle, Proceedings of SPIE Vol.5463, (SPIE, Bellingham, WA, 2004), pp. 8285. Conference Proceedings.
25.
M. Alrubaiee, S. K. Gayen, J. A. Koutcher, and R. R. Alfano, "Cancerous and normal
human tissues investigated by near-infrared time-resolved and spectroscopic imaging
techniques," in Optical Tomography and Spectroscopy of Tissue V, edited by Britton
Chance, Robert R. Alfano, Bruce J. Tromberg, Mamoru Tamura, Eva M. Sevick-Muraca,
Proceedings of SPIE Vol. 4955, (SPIE, Bellingham, WA, 2003) pp.199-202. Conference
Proceeding.
24.
S. K. Gayen, M. Alrubaiee, M. Zevallos, and R. R. Alfano, “Spectrally and temporally
resolved optical imaging of normal and cancerous human breast tissues,” Proceedings of
the Inter-Institute Workshop on In Vivo Optical Imaging at the NIH, Amir H.
Gandjbakhche, ed. (Optical Society of America, Washington DC, 2000) pp. 142-147.
Conference Proceeding.
23.
S. K. Gayen, M. E. Zevallos, B. B. Das, and R. R. Alfano, "Near-infrared spectroscopic
and time-sliced imaging of human breast tissues," in Optical Tomography and
Spectroscopy of Tissue III, Proceedings of SPIE Vol. 3597 (SPIE, Bellingham, WA, 1999)
pp. 508-511. Conference Proceeding.
22.
M. Xu, S. K. Gayen, W. Cai, M. E. Zevallos, M. Lax, and R. R. Alfano, "Time-sliced
three-dimensional inverse image reconstruction of objects in highly scattering media," in
Optical Tomography and Spectroscopy of Tissue III. Proceedings of SPIE Vol. 3597
(SPIE, Bellingham, WA, 1999) pp. 2-4. Conference Proceeding.
21.
R. R. Alfano, S. G. Demos, P. Galland, S. K. Gayen, Y. Guo, P. P. Ho, X. Liang, F. Liu, L.
Wang, Q. Z. Wang, and W. B. Wang, "Time-resolved and nonlinear optical imaging for
medical applications," in Proceedings of the NYAS conference on "Advances in Optical
Biopsy and Imaging," Annals of the New York Academy of Sciences, Volume 838, pp. 1428 (1998).
20.
S. K. Gayen, M. E. Zevallos, B. B. Das, and R. R. Alfano, "Time-sliced transillumination
imaging of normal and cancerous breast tissues," in OSA Trends in Optics and Photonics
Series Vol. 21 Advances in Optical Imaging and Photon Migration, edited by J. G.
Fujimoto and M. S. Patterson, Optical Society of America (1998) pp. 63-66.
19.
W. Cai, S. K. Gayen, M. Xu, M. Lax, and R. R. Alfano, "Inverse reconstruction of threedimensional optical tomographic images of objects in turbid media from time-sliced twodimensional transmission measurements," in OSA Trends in Optics and Photonics Series
Vol. 21 Advances in Optical Imaging and Photon Migration, edited by J. G. Fujimoto and
M. S. Patterson, Optical Society of America (1998) pp.138-141.
18.
R. R. Alfano, S. K. Gayen, and A. Katz, "Advances in mediphotonic imaging and biopsy,"
in "Optics and Imaging in the Information Age," IS&T - The Society for Imaging Science
and Technology, pp. 299-305 (1997), Springfield, VA.
17.
R. R. Alfano, S. G. Demos, and S. K. Gayen, "Advances in optical imaging of biomedical
media," in Imaging Brain Structure and Function: Emerging Technologies in the
Neurosciences, Volume 820 of the Annals of the New York Academy of Sciences, pp. 248271 (1997), New York.
7
Last revised 11/04/08
16.
P. P. Ho, P. Galland, X. Liang, L. Wang, S. Demos, S. K. Gayen, and R. R. Alfano, "Timegated images of calcification regions in turbid media," SPIE Vol. 2979, 94-97 (1997).
15.
S. K. Gayen and R. R. Alfano, "Emerging optical biomedical imaging techniques," Opt.
Photon. News 7(3), 22 (1996).
14.
S. K. Gayen, R. R. Alfano, and C. M. Penney, "Photoacoustic imaging of objects hidden in
random scattering media," in OSA Trends in Optics and Photonics Series Volume on
Advances in Optical Imaging and Photon Migration ('96), edited by R. R. Alfano and J. G.
Fujimoto, Optical Society of America, pp. 322-324 (1996).
13.
S. K. Gayen, V. P. Tomaselli, and R. R. Alfano, "Ultrafast processes: laser-spectroscopic
clocks are providing new insights," Photonics Spectra 29, 144 (1995).
12.
K. E. Gonsalves, G. Carlson, X. Chen, S. K. Gayen, R. Perez, M. Jose-Yacaman, "Surface
functionalized nanostructured gold/polymer composites," in Proceedings of the American
Chemical Society, Division of Polymeric Materials: Science and Engineering, 73, 298
(1995).
11.
R. I. Billmers, S. K. Gayen, V. M. Contarino, W. J. Scharpf, M. F. Squicciarini, and D. A.
Alocca, "Actively pumped optical filters at 532 nm," in NASA Conference Publication
3314: Proceedings of Second Annual Research Center for Optical Physics (RCOP) Forum,
Hampton University, 23-24 September 1994, Hampton, VA. Edited by F. Allario and D.
Temple, pp. 11-20.
10.
Y. M. Cheung, S. K. Gayen, and D. M. Gualtieri, "Laser-induced photochromic centers in
Ce3+:La2Be2O5," in NASA Conference Publication 3314: Proceedings of Second Annual
Research Center for Optical Physics (RCOP) Forum, Hampton University, 23-24
September 1994, Hampton, VA. Edited by F. Allario and D. Temple, pp. 37-44.
9.
V. Petricevic, S. K. Gayen, and R. R. Alfano, "Chromium activated forsterite laser," in
OSA Proceedings on Tunable Solid-State Lasers, Vol. 5, edited by M. L. Shand and H. P.
Jenssen Optical Society of America, Washington, D. C., 1989), pp. 77-84.
8.
V. Petricevic, S. K. Gayen, A. Seas, and R. R. Alfano, "Tetravalent Chromium-Doped
Forsterite Laser", Proceedings of the V International Conference on Tunable Lasers,
Irkutsk, USSR, 20-23 September, 1989. Conference Proceedings.
7.
V. Petricevic, S. K. Gayen and R. R. Alfano, "A new tunable solid-state laser system,"
Photonics Spectra 22(3), 95 (1988).
6.
V. Petricevic, S. K. Gayen, R. R. Alfano, K. Yamagishi, and K. Moriya, "Room
temperature vibronic laser action in Cr3+:Mg2SiO4," in Proceedings of the International
Conference on Lasers '87, 7-12 December, Lake Tahoe, Nevada. Edited by F. J. Duarte,
(STS Press, McLean, VA, 1988) p. 423.
5.
V. Petricevic, S. K. Gayen, and R. R. Alfano, "Major breakthrough in tunable solid-state
lasers", in Optics in 1988, (Guest Editor: R. D. Guenther), Opt. News 14(12), 13 (1988).
4.
V. Petricevic, S. K. Gayen, and R. R. Alfano, "Lasing and spectroscopic properties of
chromium-activated forsterite," in Conference Proceedings 191, Advances In Laser
Science-IV, Proceedings of the Fourth International Laser Science Conference (ILS-IV), 2-
8
Last revised 11/04/08
6 October 1988, Atlanta, Georgia. Edited by J. L. Golf, D. F. Heller, M. Lapp, and W. C.
Stwalley (AIP, New York), pp. 33-38.
3.
P. J. Delfyett, S. K. Gayen, and R. R. Alfano, "Ultrafast laser technology," in Encyclopedia
of Physical Science and Technology, Vol. 14, Editor-in-Chief: R. A. Meyers, Academic,
1987, pp. 169-190. Also included in the Encyclopedia of Lasers and Optical Technology,
Editor: R. A. Meyers, Academic, 1991, pp. 711-732. Updated for the second edition of the
original encyclopedia, Vol. 17, 1992, pp. 119-143.
2.
S. K. Gayen, W. B. Wang, V. Petricevic, and R. R. Alfano, "Nonradiative relaxation in
tunable solid-state laser crystals," in Proceedings of the International Conference on
Lasers '85, 2-6 December 1985, Las Vegas, Nevada, edited by C. P. Wang, (STS Press,
McLean, VA, 1986), p. 622.
1.
S. K. Gayen, W. B. Wang, V. Petricevic, and R. R. Alfano, "Picosecond time-resolved
studies of nonradiative relaxation in ruby and alexandrite," in Proceedings of the First
International Laser Science Conference, 18-22 November, 1985, Dallas, Texas, edited by
W. C. Stwalley and M. Lapp, (American Institute of Physics, 1986), p. 206.
Abstracts and Presentations
Invited Conference Presentations
S. K. Gayen, “Pulse propagation and optical imaging through turbid media.” Presented at the
CUNY Photonics Symposium 2003, November 13, 2003, New York.
S. K. Gayen, M. Alrubaiee, and R. R. Alfano, “Time-resolved and optical spectroscopic imaging
for cancer detection.” Invited talk presented at the 2003 IEEE MTT-S International
Symposium, June 8-13, 2003, Philadelphia, PA.
V. Petricevic, S. K. Gayen, and R. R. Alfano, "Tetravalent chromium-doped forsterite laser."
Invited paper presented at the V International Conference on Tunable Lasers, 20-23
September 1989, Irktusk, USSR.
V. Petricevic, S. K. Gayen, and R. R. Alfano, "Lasing and spectroscopic properties of
chromium-activated forsterite," Bull. Am. Phys. Soc. 33, 1626 (1988). Invited paper
presented at the Fourth International Laser Science Conference (ILS-IV), 2-6 October
1988, Atlanta, Georgia.
R. R. Alfano and S. K. Gayen, "Picosecond excite-and-probe absorption studies of nonradiative
relaxation kinetics in tunable solid-state laser crystals," Bull. Am. Phys. Soc. 32, 465
(1987). Invited paper presented at the March Meeting of the American Physical Society,
16-20 March 1987, New York, New York.
S. K. Gayen, W. B. Wang, V. Petricevic and R. R. Alfano, "Picosecond time-resolved studies of
nonradiative relaxation in ruby and alexandrite," Bull. Am. Phys. Soc. 30, 1844 (1985).
Invited paper presented at the First International Laser Science Conference, 18-22
November 1985.
9
Last revised 11/04/08
Contributed Presentations
89.
M. Alrubaiee, M. Xu, S. K. Gayen, R. R. Alfano, “Photonic Mammography.” Presented at
the CUNY Doctoral Science Student Orientation, CUNY Graduate Center, September 5,
2008.
88.
V. Balogh-Nair, A. Byro, F. Wang, R. Muthukattil, Y. F. Tse, H. Nguyen, B. B. Das, R. R.
Alfano, and S. K. Gayen, “Synthesis and optical spectroscopic properties of multivalent
and biocompatible hybrid cadmium sulfide-dendrimer nanocomposites,” Paper P44-9
presented at the Era of Hope, Department of Defense Breast Cancer Research Program
Meeting, June 25-28, 2008, Baltimore, MD; abstract in p.310 of the Conference
proceedings.
87.
M. Xu, M. Alrubaiee, S. K. Gayen, and R. R. Alfano, “Optical tomography using
Independent Component Analysis,” Paper P42-16 presented at the Era of Hope,
Department of Defense Breast Cancer Research Program Meeting, June 25-28, 2008,
Baltimore, MD; abstract in p.292 of the Conference proceedings.
86.
M. Alrubaiee, S. K. Gayen, and R. R. Alfano, “Near-infrared time-resolved and
spectroscopic imaging for breast cancer detection,” Paper P42-17 presented at the Era of
Hope, Department of Defense Breast Cancer Research Program Meeting, June 25-28,
2008, Baltimore, MD; abstract in p.293 of the Conference proceedings.
85. S. K. Gayen, M. Alrubaiee, and M. Xu, R. R. Alfano, “Optical imaging of an ex vivo model
cancerous human breast using Independent Component Analysis,” Paper P40-6 presented
at the Era of Hope, Department of Defense Breast Cancer Research Program Meeting, June
25-28, 2008, Baltimore, MD; abstract in p.281 of the Conference proceedings.
84.
V. Sriramoju, A. Alimova, R. Chakraverty, A. Katz, S. K. Gayen, L. Larsson, H. E.
Savage, and R. R. Alfano, “Raman spectroscopic study of oxidative stress induced changes
in mice skeletal muscles,” Proceedings of SPIE Vol. 6853, 685315, 2008.
83.
M. Xu, M. Alrubaiee, S. K. Gayen, and R. R. Alfano, “Determination of light absorption,
scattering and anisotropy factor of a highly scattering medium using backscattered circular
polarized light.” Paper 6935-18 presented at Conference 6435: Optical Interactions with
Tissue and Cells XVIII of SPIE’s BiOS 2007/ Photonics West, January 20-25, 2007, San
Jose, California.
82.
X. Ni, S. A. Kartazayeva, W. B. Wang, W. Cai, S. K. Gayen, and R. R. Alfano,
“Polarization memory effect and visibility improvement in turbid media.” Paper 6934-23
presented at Conference 6934: Optical Tomography and Spectroscopy of Tissue VII of
SPIE’s BiOS 2007/ Photonics West, January 20-25, 2007, San Jose, California.
81.
M. Xu, M. Alrubaiee, S. K. Gayen, and R. R. Alfano, “Optical high resolution cross section
imaging of a human breast model using independent component analysis in CW and time
domain.” Paper 6934-42 presented at Conference 6934: Optical Tomography and
Spectroscopy of Tissue VII of SPIE’s BiOS 2007/ Photonics West, January 20-25, 2007,
San Jose, California.
80.
M. Xu, M. Alrubaiee, S. K. Gayen and R. R. Alfano, “Optical high resolution cross section
imaging of human breast using independent component analysis.” Presented at the 5th
10
Last revised 11/04/08
Fourth Inter-Institute Workshop on Optical Diagnostic Imaging from Bench to Bedside at
the National Institutes of Health, 25-27 September 2006, Bethesda, Maryland, USA.
79.
M. Alrubaiee, M. Xu, S. K. Gayen, R. R. Alfano, “Time-sliced imaging and Monte Carlo
simulation study of ex vivo cancerous and normal breast tissues.” Presented at the Junior
Scientist Conference 2006, April 19 – 21, Vienna University of Technology, Vienna,
Austria.
78.
K. G. Phillips, M. Xu, S. K. Gayen, R. R. Alfano, “Time-resolved ring structure of
backscattered circularly polarized beams from forward scattering media.” Paper 6091-11
presented at the Optical Biopsy VI Conference of SPIE’s BiOS 2006/ Photonics West,
January 21-26, 2006, San Jose, California.
77.
M. Xu, M. Alrubaiee, W. Cai, S. K. Gayen, and R. R. Alfano, “Fractal mechanism of light
scattering for tissue optical biopsy.” Paper 6091-16 presented at the Optical Biopsy VI
Conference of SPIE’s BiOS 2006/ Photonics West, January 21-26, 2006, San Jose,
California.
76.
M. Xu, M. Alrubaiee, W. Cai, S. K. Gayen, and R. R. Alfano, “Toward optical imaging of
small tumors in breasts using cumulant forward model and Independent Component
Analysis,” Paper P14-19 presented at the Era of Hope, Department of Defense Breast
Cancer Research Program Meeting, June 8-11, 2005, Philadelphia, PA.
75.
M. Alrubaiee, W. Cai, S. K. Gayen, and R. R. Alfano, “Spectral and temporal near-infrared
imaging of ex vivo normal and cancerous human breast tissues and model media,” Paper
P64-1 presented at the Era of Hope, Department of Defense Breast Cancer Research
Program Meeting, June 8-11, 2005, Philadelphia, PA.
74.
M. Alrubaiee, M. Xu, S. K. Gayen, and R. R. Alfano, “Optical tomography using
Independent Component Analysis for breast cancer detection,” Paper P64-2 presented at
the Era of Hope, Department of Defense Breast Cancer Research Program Meeting, June
8-11, 2005, Philadelphia, PA.
73.
M. Alrubaiee, M. Xu, S. K. Gayen, and R. R. Alfano, “Three-dimensional localization of
scattering targets in turbid media using Independent Component Analysis,” Paper CThJ3
presented at the Conference on Lasers and Electro-Optics (CLEO), May 22-27, 2005,
Baltimore, Maryland.
72.
M. Xu, M. Alrubaiee, S. K. Gayen, and R. R. Alfano, “Fluorescence optical imaging in
turbid media using Independent Component Analysis,” Paper CFJ1 presented at the
Conference on Lasers and Electro-Optics (CLEO), May 22-27, 2005, Baltimore, Maryland.
71.
M. Brito, X. Liang, B. B. Das, S. K. Gayen, R. R. Alfano, D. L. V. Bauer, A. Byro, V.
Balogh-Nair, “Spectroscopy and microscopy of an organic-inorganic hybrid
nanocomposite,” Poster 10.2 presented at the “Einsteins in the City” conference held at the
City College of New York, April 11-12, 2005. Recipient of the award for the best paper by
an undergraduate student.
70.
M. Alrubaiee, M. Xu, S. K. Gayen, and R. R. Alfano, “Optical tomography using
Independent Component Analysis to detect small targets in turbid media,” Poster 12.0
presented at the “Einsteins in the City” conference held at the City College of New York.
11
Last revised 11/04/08
69.
Jonathan Maltz, W. Cai, B. B. Das, S. K. Gayen, and R. R. Alfano, “Light propagation and
imaging of targets in turbid media,” Poster 12.7 presented at the “Einsteins in the City”
conference held at the City College of New York, April 11-12, 2005.
68.
Kevin Phillips, M. Xu, S. K. Gayen, and R. R. Alfano, “Backscattering of circularly
polarized light in a forward-peaked scattering medium: an electric field Monte Carlo
study,” Poster 12.10 presented at the “Einsteins in the City” conference held at the City
College of New York, April 11-12, 2005.
67.
W. Cai, M. Alrubaiee, S. K. Gayen, M. Xu, and R. R. Alfano, “Three-dimensional optical
tomography of objects in turbid media using the ‘round-trip matrix.” Paper 5693-02
presented at the Optical Tomography and Spectroscopy of Tissue VII Conference of
SPIE’s BiOS 2005/ Photonics West, January 22-27, 2005, San Jose, California.
66.
M. Alrubaiee, M. Xu, S. K. Gayen, and R. R. Alfano, “Fluorescence optical tomography
using independent component analysis to detect small objects in turbid media.” Paper
5693-39 presented at the Optical Tomography and Spectroscopy of Tissue VII Conference
of SPIE’s BiOS 2005/ Photonics West, January 22-27, 2005, San Jose, California.
65.
M. Xu, M. Alrubaiee, S. K. Gayen, and R. R. Alfano, “Optical tomography using
independent component analysis to detect absorptive, scattering, or fluorescent
inhomogeneities in turbid media.” Paper 5693-02 presented at the Optical Tomography and
Spectroscopy of Tissue VII Conference of SPIE’s BiOS 2005/ Photonics West, January 2227, 2005, San Jose, California.
64.
C. Gonzales, V. Balogh-Nair, S. K. Gayen, M. Brito, B. B. Das, X. Liang, E. Nuez, R. R.
Alfano, “A blue-green emitting organic-inorganic hybrid nanocomposite,” Paper FML3
presented at the OSA Annual Meeting 2004, October 10-14, Rochester, New York.
63.
M. Alrubaiee, M. Xu, S. K. Gayen, and R. R. Alfano, “Three-dimensional localization and
reconstruction of objects in a turbid medium using independent component analysis of
optical transmission and fluorescence measurements,” presented at Optical Imaging 2004,
Fourth Inter-Institute Workshop on Optical Diagnostic Imaging from Bench to Bedside at
the National Institutes of Health, 20-22 September 2004, Bethesda, Maryland, USA.
62.
M. Xu, M. Alrubaiee, S. K. Gayen, and R. R. Alfano, “Information theory approach to
detect small inhomogeneities within tissue-like turbid media” presented at Optical Imaging
2004, Fourth Inter-Institute Workshop on Optical Diagnostic Imaging from Bench to
Bedside at the National Institutes of Health, 20-22 September 2004, Bethesda, Maryland,
USA.
61.
M. Alrubaiee, M. Xu, S. K. Gayen, and R. R. Alfano, “Time-resolved and quasi-continuous
wave three-dimensional tomographic imaging.” Paper 5463-12 presented at the SPIE's
International Symposium Photonics Europe, 26-30 April 2004 in Strasbourg, France.
60.
M. Xu, M. Alrubaiee, W. Cai, S. K. Gayen, and R. R. Alfano, “Simulated and experimental
separation and characterization of absorptive inhomogeneities in turbid media.” Presented
at the Biomedical Topical Meetings held at Fontainebleau Hilton Resort and Towers,
Miami Beach, Florida, April 16-19, 2004; on CD-ROM (OSA).
12
Last revised 11/04/08
59.
M. Brito, B. B. Das, X. Liang, E. Nuez, S. K. Gayen, R. R. Alfano, C. Gonzales, and V.
Balogh-Nair, “An Organic-Inorganic Hybrid Nanoscale Light Emitter.” Presented at the
Nano Day Poster Session held at the City College of New York, New York, April 17, 2004.
58.
S. K. Gayen, “Pulse propagation and optical imaging through turbid media.” Presented at
the CUNY Photonics Symposium 2003, November 13, 2003, New York.
57.
M. Brito, M. Alrubaiee, B.B. Das, S. K. Gayen, R. R. Alfano, C. Gonzales, and V. BaloghNair, “Fabrication and spectroscopic properties of thin films of CdS: DAB, an organicinorganic nanoscale light emitter.” Presented at the City College Academy for Professional
Preparation Annual Poster Presentation, November 20, 2003.
56.
M. Al-Rubaiee, S. K. Gayen, J. A. Koutcher, and R. R. Alfano, "Cancerous and normal
human tissues investigated by near-infrared time-resolved and spectroscopic imaging
techniques." Paper 4955-28 presented at the Optical Tomography and Spectroscopy of
Tissue V Conference of SPIE’s Photonics West BiOS 2003/ Photonics West, January 2531, 2003, San Jose, California.
55.
W. Cai, S. K. Gayen, M. Xu, and R. R. Alfano, "Improving inverse reconstruction problem
for three-dimensional optical image of breast." Paper P48-1 presented at Era of Hope,
Department of Defense Breast Cancer Research Program Meeting, September 25-28, 2002,
Orlando, Florida.
54.
M. Al-Rubaiee, S. K. Gayen, W. Cai, M. Xu, J. A. Koutcher, and R. R. Alfano, "Nearinfrared photonics imaging of human breast tissue." Paper P48-2 presented at Era of Hope,
Department of Defense Breast Cancer Research Program Meeting, September 25-28, 2002,
Orlando, Florida.
53.
M. Alrubaiee, S. K. Gayen, H. E. Savage, S. P. Schantz, and R. R. Alfano, "Picosecond
time-gated and optical spectroscopic imaging of parotid gland tissues." Paper FP-2
presented at Frontiers of Photonics Symposium, City College of New York, November 5,
2001, New York.
52.
X. Ni, W. Cai, S. K. Gayen, and R. R. Alfano, "Extraction of early light components of
multiple pulses in fog and other turbid media." Paper FP-15 presented at Frontiers of
Photonics Symposium, City College of New York, November 5, 2001, New York.
51.
S. K. Gayen, M. Alrubaiee, and R. R. Alfano, "Time-sliced and spectroscopic twodimensional imaging of normal and cancerous human breast tissues." Paper E-21
presented at Era of Hope, Department of Defense Breast Cancer Research Program
Meeting, June 8-11, 2000, Atlanta, Georgia.
50.
S. K. Gayen, M. Alrubaiee and Y. M. Cheung, "Spectroscopic properties and growth
kinetics of photochromic centers in potential tunable laser crystals," Bull. Am. Phys. Soc.
45, 720 (2000). Paper R9 8 presented at the March Meeting of the American Physical
Society Centennial Meeting, March 20-24, 2000, Minneapolis, Minnesota.
49.
S. K. Gayen, M. Alrubaiee, R. R. Alfano, J. Koutcher, and H. Savage, "Electronic timegated and spectroscopic near-infrared imaging of lesions in human tissues," Bull. Am.
Phys. Soc. 45, 958 (2000). Paper Y13 10 presented at the March Meeting of the American
Physical Society Centennial Meeting, March 20-24, 2000, Minneapolis, Minnesota.
13
Last revised 11/04/08
48.
S. K. Gayen, M. E. Zevallos, and R. R. Alfano, "Time-sliced and spectroscopic correlated
two-dimensional near-infrared imaging for cancer detection." Paper CFL4 presented at the
Conference on Lasers and Electro-Optics (CLEO'99), May 23-28, 1999, Baltimore,
Maryland.
47.
S. K. Gayen, M. E. Zevallos, and R. R. Alfano, "Time-resolved transillumination imaging
of normal and cancerous human breast tissues with a picosecond electronic time gate,"
Bull. Am. Phys. Soc. 44, 117 (1999). Paper BC32 7 presented at the American Physical
Society Centennial Meeting, March 20-26, 1999, Atlanta, Georgia.
46.
S. K. Gayen and Y. M. Cheung, "Excited-state absorption in trivalent cerium-doped
lanthanum beryllate," Bull. Am. Phys. Soc. 44, 1938 (1999). Paper ZC32 12 presented at
the American Physical Society Centennial Meeting, March 20-26, 1999, Atlanta, Georgia.
45.
S. K. Gayen, M. E. Zevallos, B. B. Das, and R. R. Alfano, "Near-infrared spectroscopic
and time-sliced imaging of human breast tissues." Paper 3597-84 presented at the SPIE's
International Symposium on Biomedical Optics, BiOS '99/ Photonics West, 23-29 January,
San Jose, California.
44.
M. Xu, S. K. Gayen, W. Cai, M. E. Zevallos, M. Lax, and R. R. Alfano, "Time-sliced
three-dimensional inverse image reconstruction of objects in highly scattering media."
Paper 3597-02 presented at the SPIE's International Symposium on Biomedical Optics,
BiOS '99/ Photonics West, 23-29 January, San Jose, California.
43.
S. K. Gayen, "Spectroscopy of several potential short wavelength tunable laser crystals,"
Paper ThV3 presented at the OSA Annual Meeting, 4-9 October, 1998, Baltimore, MD.
42.
M. E. Zevallos, S. K. Gayen, B. B. Das, and R. R. Alfano, "Imaging of bones inside tissues
using picosecond electronic time gating." Paper WM6 presented at the OSA Annual
Meeting, 4-9 October, 1998, Baltimore, MD.
41.
S. K. Gayen, M. E. Zevallos, and R. R. Alfano, "Time-sliced and spectroscopic nearinfrared imaging of normal and cancerous human breast tissues." Paper WM5 presented at
the OSA Annual Meeting, 4-9 October, 1998, Baltimore, MD.
40.
W. Cai, S. K. Gayen, M. Xu, M. Lax, and R. R. Alfano, "Three-dimensional inverse image
reconstruction using picosecond time-sliced two-dimensional near-infrared transmission
measurements." Paper ThUU6 presented at the OSA Annual Meeting, 4-9 October, 1998,
Baltimore, MD.
39.
M. E. Zevallos, S. K. Gayen, M. Alrubaiee, J. M. Evans, and R. R. Alfano, "Twodimensional transillumination imaging of tissues using 1250 nm light from a tunable
chromium-doped forsterite laser." Presented at the Conference on Lasers and ElectroOptics (CLEO'98), 3-8 May 1998, San Francisco, California.
38.
S. K. Gayen, M. E. Zevallos, B. B. Das, and R. R. Alfano, "Time-sliced two-dimensional
near-infrared imaging of normal and malignant human breast tissues." Presented at the
Conference on Lasers and Electro-Optics (CLEO'98), 3-8 May 1998, San Francisco,
California.
37.
S. K. Gayen, M. E. Zevallos, and R. R. Alfano, "Time-resolved and spectroscopic nearinfrared transillumination imaging of human breast tissues." Presented at the NDRI
14
Last revised 11/04/08
conference on "Frontiers in Human Tissue Research: Moving into the 21st Century,"
Philadelphia, PA, April 15, 1998. Received the best poster award.
36.
S. K. Gayen, M. E. Zevallos, B. B. Das, and R. R. Alfano, "Time-sliced transillumination
imaging of normal and cancerous breast tissues." Paper ATuB5 presented at the Advances
in Optical Imaging and Photon Migration 1998 Conference, 8-11 March 1998, Orlando,
Florida.
35.
W. Cai, S. K. Gayen, M. Xu, M. Lax, and R. R. Alfano, "Inverse reconstruction of threedimensional optical tomographic images of objects in turbid media from time-sliced twodimensional transmission measurements," Paper PDA2 presented at the Advances in
Optical Imaging and Photon Migration 1998 Conference, 8-11 March 1998, Orlando,
Florida.
34.
M. E. Zevallos, S. K. Gayen, M. Alrubaiee, J. M. Evans and R. R. Alfano, "Near-infrared
4+
imaging through biological tissues using a Cr :Forsterite and a Nd:YAG laser." Presented
at the NASA URC Technical Conference '98, 22-27 February 1998, Huntsville, Alabama.
33.
S. K. Gayen, L. Wang, M. Zevallos, and R. R. Alfano, "Near-infrared transillumination
imaging using a chromium-doped forsterite laser." Paper CTuP58 presented at the
Conference on Lasers and Electro-Optics (CLEO'97), 18-23 May 1997, Baltimore,
Maryland.
32.
S. K. Gayen, R. R. Alfano, and C. M. Penney, "Photoacoustic imaging of objects hidden in
random scattering media." Paper ATuB2 presented at the Orlando Topical Meeting on
Advances in Optical Imaging and Photon Migration, 17-22 March 1996, Orlando, Florida.
31.
K. E. Gonsalves, G. Carlson, X. Chen, S. K. Gayen, R. Perez, M. Jose-Yacaman, "Surface
functionalized nanostructured gold/polymer composites." Presented at the Fall 1995
Meeting of the American Chemical Society, Division of Polymeric Materials: Science and
Engineering, Chicago, Illinois.
30.
G. Yang, P. R. Herczfeld, R. I. Billmers, S. K. Gayen, V. M. Contarino., M. F.
Squicciarini, D. Alocca, and W. J. Scharpf, "Induced circular dichroism: new mechanism
for developing optical filters." Paper THEEE7 presented at the 1995 OSA Annual Meeting,
September 10-15, 1995, Portland, Oregon.
29.
G. Yang, P. R. Herczfeld, R. I. Billmers, V. M. Contarino, M. F. Squicciarini, D. Alocca,
and S. K. Gayen, "Excited-state optical filter at 532.33 nm based on optical rotary
dispersion in potassium vapor." Paper CWj3 presented at the Conference on Lasers and
Electro-Optics (CLEO '95), 21-26 May 1995, Baltimore, Maryland.
28.
Y. M. Cheung and S. K. Gayen, "Possibilities and problems of Ce3+:La2Be2O5 as a tunable
laser crystal." Presented at the Interdisciplinary Laser Science Conference (ILS '94), 3-7
October 1994, Dallas, TX.
27.
R. I. Billmers, S. K. Gayen, M. F. Squicciarini, V. M. Contarino., D. Alocca, "Activelypumped optical filters at 532 nm." Presented at the Second Annual Forum of the Research
Center of Optical Physics, Hampton University, 22-24 September 1994, Hampton, VA.
15
Last revised 11/04/08
26.
Y. M. Cheung and S. K. Gayen, "Laser-induced photochromic centers in Ce3+:La2Be2O5."
Presented at the Second Annual Forum of the Research Center of Optical Physics,
Hampton University, 23-24 September 1994, Hampton, VA.
25.
Y. M. Cheung and S. K. Gayen, "Two-photon excitation and IR-to-visible upconversion in
erbium aluminum garnet." Paper CTuK72 presented at the Conference on Lasers and
Electro-Optics (CLEO '94), 8-13 May 1994, Anaheim, California.
24.
G. S. Nolas, V. G. Tsoukala, S. K. Gayen, and Glen A. Slack, "Site-selective electronic
Raman excitation study of the 4fÆ5d transitions in trivalent cerium-activated yttria."
Paper QTuP2 presented at the International Quantum Electronics Conference (IQEC '94),
8-13 May 1994, Anaheim, California.
23.
Y. M. Cheung and S. K. Gayen, "Excited-state absorption in Pr :Y3Al5O12," Bull. Am.
Phys. Soc. 39, 72 (1994). Presented at the March Meeting of the American Physical
Society, 21-25 March 1994, Pittsburgh, Pennsylvania.
22.
Bin Qing Xie and S. K. Gayen, "Calculation of resonant and non-resonant 4f2Æ4f5d twophoton absorption cross section in Pr3+:Y3Al5O12," Bull. Am. Phys. Soc. 39, 73 (1994).
Presented at the March Meeting of the American Physical Society, 21-25 March 1994,
Pittsburgh, Pennsylvania.
21.
G. S. Nolas, V. G. Tsoukala, S. K. Gayen, and G. A. Slack," Electronic Raman scattering
in Ce3+:Y2O3,” Bull. Am. Phys. Soc. 39, 73 (1994). Presented at the March Meeting of the
American Physical Society, 21-25 March 1994, Pittsburgh, Pennsylvania.
20.
Bin Qing Xie and S. K. Gayen, "Two-color two-photon excitation of intra-4f blue
transitions in Pr3+:Y3Al5O12," in Conference on Lasers and Electro-Optics Technical
Digest Series, vol. 11 (Optical Society of America, Washington, D. C., 1993), pp. 504-505.
Presented at CLEO '93, 2-7 May 1993, Baltimore, Maryland.
19.
Bin Qing Xie, Y. M. Cheung and S. K. Gayen, "Intra-4f2 two-photon transitions in
3+
Pr :LiYF4", in International Conference on Luminescence (ICL '93) Technical Digest, p.
M-47. Presented at the International Conference on Luminescence (ICL '93) 9-13 August
1993, Storrs, CT.
18.
G. S. Nolas, V. G. Tsoukala, S. K. Gayen, and Glen A. Slack, " Resonance enhancement
and site selectivity of electronic Raman transitions in trivalent cerium-doped yttria," in
International Conference on Luminescence (ICL '93) Technical Digest, p. M-48. Presented
at the International Conference on Luminescence (ICL '93), 9-13 August 1993, Storrs, CT.
17.
S. K. Gayen, Bin Qing Xie, and Y. M. Cheung, "Resonance enhancement of two-photon
absorption in Pr3+:Y3Al5O12," Bull. Am. Phys. Soc. 33, 811 (1992). Presented at the March
Meeting of the American Physical Society, 16-20 March 1992, Indianapolis, Indiana.
16.
V. Petricevic, S. K. Gayen, and R. R. Alfano, "A chromium-doped forsterite laser," in
Tunable Solid-State Lasers Technical Digest, (Optical Society of America, Washington, D.
C., 1989), pp. 48-50. Presented at the Topical Meeting on Tunable Solid State Lasers, 1-3
May 1989, North Fallmouth, Cape Cod, MA.
3+
16
Last revised 11/04/08
15.
S. K. Gayen, V. Petricevic, and R. R. Alfano, "Laser and spectroscopic properties of
chromium-activated forsterite," in Conference on Quantum Electronics and Laser Science
Technical Digest Series, Vol. 12, (Optical Society of America, Washington, D. C. 1989),
pp. 172-173. Presented at the QELS Conference, 24-28 April 1989, Baltimore, Maryland.
14.
V. Petricevic, S. K. Gayen, and R. R. Alfano, "Broadly tunable room-temperature
chromium-activated forsterite laser," in Conference on Lasers and Electro-Optics
Technical Digest Series, Vol. (Optical Society of America, Washington, D. C., 1989), pp.
22-23. Presented at CLEO '89, 24-28 April 1989, Baltimore, Maryland.
13.
S. K. Gayen, V. Petricevic, R. R. Alfano, K. Yamagishi, and K. Moriya, "Spectroscopic
properties of Cr3+:Mg2SiO4: a new tunable solid state laser Crystal," Bull. Am. Phys. Soc.
33, 811 (1988). Presented at the March Meeting of the American Physical Society, 21-25
March 1988, New Orleans, Louisiana.
12.
V. Petricevic, S. K. Gayen, R. R. Alfano, K. Yamagishi, and K. Moriya, "Roomtemperature pulsed laser action in Cr3+:Mg2SiO4," Bull. Am. Phys. Soc. 33, 811 (1988).
Presented at the March Meeting of the American Physical Society, 21-25 March 1988,
New Orleans, Louisiana.
11.
V. Petricevic, S. K. Gayen, R. R. Alfano, K. Yamagishi, and K. Moriya, "Laser action in
chromium-doped forsterite." Presented at the International Conference on Lasers '87, 7-11
December 1987, Lake Tahoe, Nevada.
10.
S. K. Gayen, W. B. Wang, V. Petricevic, S. G. Demos, and R. R. Alfano, "Nonradiative
transition dynamics in emerald," in Topical Meeting on Tunable Solid State Lasers
Technical Digest Series, Vol. 20, (Optical Society of America, Washington, D. C. 1987),
pp.162-164. Presented at the Topical Meeting on Tunable Solid State Lasers, 26-28
October, 1987, Williamsburg, Virginia.
9.
V. Petricevic, S. K. Gayen, R. R. Alfano, and K. Moriya, "Spectroscopic properties of
trivalent chromium-doped forsterite: a new potential tunable laser crystal," in Topical
Meeting on Tunable Solid State Laser Technical Digest Series, Vol. 20, (Optical Society of
America, Washington, D. C. 1987), pp. PD8-1 - PD8-4. Presented at the Topical Meeting
on Tunable Solid State Lasers, 26-28 October 1987, Williamsburg, VA.
8.
S. K. Gayen, W. B. Wang, V. Petricevic, and R. R. Alfano, "Nonradiative relaxation in
tunable solid-state laser crystals." Presented at the International Conference on Lasers '85,
2-6 December 1985, Las Vegas, Nevada.
7.
S. K. Gayen, V. Petricevic, W. B. Wang, R. Dorsinville, N. Ockman, and R. R. Alfano,
"Picosecond excite-and-probe absorption measurements of Cr3+ ions in laser crystals,"
Bull. Am. Phys. Soc. 30, 419 (1985). Presented at the March Meeting of the American
Physical Society, 25-29 March 1985, Baltimore, Maryland.
6.
S. K. Gayen, G. J. Pogatshnik, and D. S. Hamilton, "Two-photon excitations of the higher
5d states in Ce3+:CaF2." Presented at the International Conference on Luminescence (ICL84), 13-17 August, 1984, Madison, Wisconsin.
5.
G. J. Pogatshnik, S. K. Gayen, and D. S. Hamilton, "Laser induced defect centers in
Ce3+:CaF2." Presented at the International Conference on Luminescence (ICL-84), 13-17
August 1984, Madison, Wisconsin.
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4.
S. K. Gayen, G. J. Pogatshnik, D. S. Hamilton, and W. J. Miniscalco, "Transient excited
state absorption in Ce3+:YAG," Bull. Am. Phys. Soc. 29, 938 (1984). Presented at the
March Meeting of the American Physical Society, 26-30 March, 1984, Detroit, MI.
3.
S. K. Gayen and D. S. Hamilton, "Excited state absorption in Ce3+:CaF2," J. Opt. Soc. Am.
73, P1393, (1983). Presented at the Fourth International Conference on Dynamical
Processes in the Excited States of Ions and Molecules in Solids (DPC-83), 11-14 July,
1983, Stanford University, Stanford, California.
2.
S. K. Gayen and D. S. Hamilton, "Two-photon transitions in Ce3+:CaF2," Bull. Am. Phys.
Soc. 27, 194 (1982). Presented at the March Meeting of the American Physical Society, 812 March, 1982, Dallas, Texas.
1.
S. K. Gayen and D. S. Hamilton, "Two-photon absorption spectroscopy of 4fÆ5d
transitions in Ce3+:CaF2," Bull. Am. Phys. Soc. 27, 58 (1982). Presented at the Third
International Conference on Dynamical Processes in the Excited States of Ions and
Molecules in Solids (DPC-81), 29-31 July, 1981, Regensburg, Federal Republic of
Germany.
Colloquium and Seminar Presentations
“Optical imaging of Targets in Turbid Media.” Presented at the Physics Department Colloquium,
Queens College, April 14, 2008.
“Optical Biomedical Imaging.” Presented at the Chemistry/ Radiology joint group meeting on
“Molecular Imaging & Contrast Agent,” New York University, March 19, 2007.
“Optical imaging of Targets in Turbid Media.” Presented at the Atomic, Molecular, and Optical
Physics Seminar at SUNY, Stony Brook on May 1, 2006.
“Seeing with Lasers.” Presented at the CCNY Physics Department Major’s Month Seminar,
October 26, 2006.
“Optical Imaging of Targets in Turbid Media: Underwater Imaging Applications.” Presented at
the EDO Corporation, April 20, 2006, North Amityville, NY 11701.
“Spectrometry of Semiconductor Nanocomposites.” Presented at the CCNY Physics Department
Major’s Month Seminar, October 21, 2004.
“Pulse Propagation and Optical Imaging through Turbid Media.” Presented at the Departmental
Seminar of the Mechanical Engineering Department, City College of New York, March 4,
2004, New York.
“Laser: The Light Fantastic.” Presented at the CCNY Summer Scholars Program for
Mathematics and Science, August 13, 2002.
“Emerging Optical Biomedical Imaging Techniques: Light Sheds Light on Lesions.” Seminar
presented at the Department of Physics, University of Alabama at Birmingham, Alabama,
March 23, 1999.
“Optical Biomedical Imaging.” Seminar presented at the Research Center for Optical Physics,
Physics Department, Hampton University, Hampton, Virginia, June 13, 1998.
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“Picosecond Excite-and-Probe Study of Nonradiative Transition Dynamics in Tunable Laser
Crystals.” Micron-Optics Seminar presented at the Department of Electrical Engineering,
Stevens Institute of Technology, Hoboken, New Jersey, March 25, 1993.
“Interconfigurational Two-Photon Transitions in Rare-Earth Ion-Doped Crystals.” Colloquium
presented at the Department of Physics and Engineering Physics, Stevens Institute of
Technology, Hoboken, New Jersey, October 28, 1992.
“Interconfigurational Two-Photon Transitions in Trivalent Cerium and Praseodymium Doped
Crystals.” Seminar presented at the General Electric Research and Development Center,
Schenactady, New York, October 14, 1992.
“Photo-dynamics and Physics behind Tunable Solid-State Lasers.” Colloquium presented at the
Department of Physics, Lehigh University, Bethlehem, Pennsylvania, April 14, 1988.
“Photo-dynamics and Physics behind Tunable Solid-State Lasers.” Colloquium presented at the
Department of Physics and Engineering Physics, Stevens Institute of Technology,
Hoboken, New Jersey, March 22, 1988.
“Excited State Transition Dynamics in Tunable Solid-State Laser Crystals.” Seminar presented at
the Mini-Symposium on Lasers at the Atomic Energy Commission, Dhaka, Bangladesh,
January 24, 1988.
“Two-Photon Absorption Spectroscopy of Trivalent Cerium Ion in Calcium Fluoride.” Seminar
presented at the Institute for Ultrafast Spectroscopy and Lasers, Physics Department, City
College of New York, June 26, 1984.
COURSES TAUGHT
Undergraduate
• Quantum Mechanics
• Waves and Optics
• Modern Physics for Engineers
• Introduction to Nuclear Physics and Nuclear Reactors
• Modern Physics Laboratory
• Physics for Architecture Students
Graduate
• Laser Theory and Design
• Intermediate Waves and Optics
• Modern Laser Spectroscopy (a special topics course)
• Tissue Optics and Spectroscopy (an independent study course)
Tutorial
"Techniques in Ultrafast Laser Spectroscopy," developed and presented this half-day tutorial
at SPIE's (The International Society for Optical Engineering) 1988 Conference on "Advances
in Semiconductors and Superconductors: Physics and Device Applications", held in Newport
Beach, California.
RESEARCH SUPERVISION
Doctoral Students
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Names of students mentored, their Ph.D. theses titles, and the year of graduation:
•
George S. Nolas, "Electronic Raman Scattering Study of Trivalent Cerium in Yttrium
Oxide and Related Complexes," April 1994, Stevens Institute of Technology
•
Bin Qing Xie, "Two-Photon Excitation Spectroscopy of Trivalent Praseodymium Ion in
Yttrium Aluminum Garnet," April 1994, Stevens Institute of Technology
•
Yiu Ming Cheung, "Loss Mechanisms in Tunable Solid-State Laser-Type Crystals,"
October 1994, Stevens Institute of Technology
•
M. Alrubaiee, “Time-Resolved and Continuous Wave Spectroscopic Imaging of
Biological Media,” January 2007 (co-mentored with R. R. Alfano), CCNY
Current:
• Binlin Wu, Physics (Summer 2007 - present). Pursuing research on, “Hyperspectral Breast
imaging.”
Thesis Committees:
• Previous: 10
• Current: 3
MS Students
• Yiu Fat Tse, Physics (Fall 2006 – Spring 2008)
• Moncef Righi, Physics (Summer 2005 – Spring 2006)
• Kevin Phillips, Physics (2003 – 2005)
• Edwin Nuez, Electrical Engineering (2003 – 2004)
• Sean McHugh, Physics (2003 – 2004)
Undergraduate Students
Hanh Nguyen, Chemistry, (2007 – 2008)
Jonathan Maltz, Physics, (2003 – 2007)
Imtiaz Tanveer, Physics, (2003 – 2006)
Quinona Mack, Physics, (2004 – 2005)
Narges Shahroudi, Electrical Engineering (Fall 2005 – Spring 2006)
Juhi Anand, Electrical Engineering (Spring 2005 – Fall 2005)
Merlin Brito, Physics (2001 – 2005)
Ricardo Gonzalez, Physics, (7/2003 – 2/2004)
John Suarez, Mathematics, (Summer 2002)
Senior Design Projects:
Lynn Bufano, "Excitation Spectrometry," May 1993.
Mark Struzzi, "Chromium-Doped Forsterite Laser," May 1993.
Wilson Ortiz, "Photoacoustic Imaging," May 1997.
High School Students
Ellen Shapiro, Brearly School, New York, “Spectroscopic Properties of Quantum Dots,”
Summer 2005
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Romeo Alexander, Stuyvesant High School, New York, “Spectroscopy of CdS:DAB
Nanocomposite,” summer, 2004
Research Associates
•
•
•
•
•
W. Cai (2001 – present)
M. Xu (2003 – 2006)
Yimin Wang (Spring 2005 – Summer 2006)
M. Alrubaiee (2007 – present)
X. Ni (2007 – present)
SPONSORED RESEARCH
Current Projects
24.
Agency: Army Research Office (ARO)
Role: Principal Investigator
Title: “Nanoscale Photonic and Optoelectronic Materials and Devices”
Funding: $720,489
Duration: 9/1/08 – 8/31/2011
23.
Agency: National Science Foundation (NSF)
Role: Co-PI (with M. Tamargo and A. Couzis), PI: D. Akins
Title: “CREST Center for Exploitation of Nanostructures for Sensors and Energy Systems”
Funding: $5,000,000
Duration: 10/1/08 – 9/30/2013
22.
Agency: National Science Foundation (NSF) (Subcontract from Columbia University)
Role: Faculty Participant (with 18 others), PI: Ken Shepard (Columbia University)
Title: “Optical Techniques for Actuation, Sensing, and Imaging of Biological Systems”
Funding: $3,000,000
Duration: 10/1/08 – 9/30/2013
21.
Agency: US Army Medical Research and Materiel Command (USAMRMC)
Role: Principal Investigator
Title: “Photonic Breast Tomography and Tumor Aggressiveness Assessment”
Funding: $1,373,825
Duration: 6/15/07 – 6/14/2011
20.
Agency: Department of Defense (DoD); Role: Co-PI
Title: Center for Nanoscale Photonic Emitters and Sensors
Funding: $4,000,000
Duration: 11/17/2003 – 11/16/2008
PI: R. R. Alfano, 5 Co-PIs
19.
Agency: US Army Medical Research and Materiel Command (USAMRMC)
Role: Co-PI (PI: R. R. Alfano)
Title: Time-resolved and Spectroscopic Three-dimensional Optical Breast Tomography
Funding: $500,000
Duration: 9/30/04 – 3/31/09
18.
Agency: New York State Office of Science, Technology and Academic Research
(NYSTAR); Role: Co-PI
Title: Center for Advanced Technology in Photonics Applications
Funding: $1,000,000/yr
Duration: 7/1/2004 – 6/30/2014
PI: H. Gafney, 30 Co-PI’s
17.
Agency: National Aeronautics and Space Administration (NASA); Role: Co-PI
21
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Title: Center for Optical Sensing and Imaging
Funding: $5,998,566
Duration: 5/1/2003 – 10/30/2008
PI: S. Ahmed, 10 Co-PIs
Completed Projects
16.
Agency: US Army Medical Research and Materiel Command (USAMRMC)
Role: Principal Investigator
Title: “Multifunctional nanocomposites for breast cancer imaging and therapy,”
Funding: $114,750
Duration: 7/11/06 – 7/10/08
15.
Agency: PSC-CUNY
Role: Principal Investigator
Title: Optical mammography using independent component analysis
Funding: $3,155
Duration: 7/1/06 - 6/30/07
14.
Agency: Office of Naval Research (ONR)
Role: Principal Investigator (PI)
Title: Time-resolved optical polarization imaging for underwater target detection
Funding: $600,000
Duration: 3/1/2003 – 6/30/2007.
13.
Agency: PSC-CUNY, Role: PI
Title: Optical Fluorescence Tomography using Independent Component Analysis
Funding: $3,602
Duration: 7/1/05 - 6/30/06
12.
Agency: Lockheed Martin, Mitchel Field, NY; Role: PI
Title: Time-gated Optical Imaging of Underwater Targets
Funding: $25,000
Duration: 9/1/2005 – 3/31/2006
11.
Agency: PSC-CUNY, Role: PI
Title: Hybrid organic-inorganic nanoscale light emitters
Funding: $4,559
Duration: 7/1/04 - 6/30/05
10.
Agency: New York State Office of Science, Technology and Academic Research
(NYSTAR); Role: Co-PI
Title: Nanoscale Biomedical and Laser Photonic Materials
Funding: $770,000
Duration: 5/1/02-9/30/04
PI: R. R. Alfano, 6 Co-PIs
9.
Agency: PSC-CUNY, Role: PI
Title: Time-resolved optical detection of targets in obscuring media
Funding: $3,840
Duration: 7/1/03 - 6/30/04
8.
Agency: Infotonics Technology Center, Inc., Rochester, NY; Role: Co-PI
Title: Compact Photonic Explorer Consortium
Funding: $1,357,451
Duration: 10/1/02-9/30/03
PI: R. R. Alfano, A consortium of 9 universities.
7.
Agency: National Science Foundation, Role: Senior Personnel (PI: R. R. Alfano)
Title: Subsurface imaging of material cracking and corrosion under paints using
femtosecond second harmonic generation
Funding: $99,894
Duration: 10/1/2001 - 9/30/2002
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6.
Agency: US Army Medical Research and Materiel Command (USAMRMC)
Role: Co-PI ( PI: R. R. Alfano)
Title: Breast Cancer Screening Using Photonic Technology
Funding: $292,463
Duration: 9/15/1998 – 2/14/03
5.
Agency: Army Research Office (DARPA/TTO); Role: Co-PI (PI: R. R. Alfano)
Title: A Feasibility Study of Optical Imaging through Atmospheric Obscurants
Funding: $90,000
Duration: 5/1/2001 – 2/28/2002
4.
Agency: Department of Energy (DOE); Role: Co-PI (PI: R. R. Alfano, 8 Co-PIs)
Title: Center for Laser Imaging and Cancer Diagnostics
Funding: $1,050,000
Duration: 1/1/1998 - 5/31/2002
3.
Agency: Department of Energy (DOE) through its Center of Excellence Program
Role: Co-PI (PI: R. R. Alfano)
Title: Center for Laser Imaging and Cancer Diagnostics
Funding: $350,000/year
Duration: 12/1/99 – 5/31/01
2.
Agency: Lawrence Livermore National Laboratory (subcontract)
Role: Co-PI (PI: R. R. Alfano)
Title: Contrast agents for time-sliced subsurface imaging
Funding: $30,000
Duration: 5/27/99 – 1/31/2000
1.
Agency: National Science Foundation; Role: PI
Title: Short-Wavelength Tunable Solid-State Lasers
Funding: $89,500
Duration: 6/15/1995 - 5/31/2000
PROFESSIONAL SERVICE
•
Serve as a referee for the following professional journals: Physical Review Letters,
Physical Review B, Physical Review E, Journal of Optical Society of America, Applied
Optics, Journal of Applied Physics, Journal of Biomedical Optics, Journal of
Luminescence, Optics Communication, Optics Letters, Reviews of Scientific
Instrumentation, and Technology in Cancer Research and Treatment.
•
Reviewer of grant proposals for NSF, Research Corporation, Petroleum Research Fund
and PSC-CUNY,
•
Co-Chair, Program Committee of the “Einsteins in the City” Conference, City College of
New York, April 2005
•
Member, Organizing Committee of the Frontiers of Photonics Symposium, City College of
New York, November 5, 2001
•
Served on the organizing committee of SPIE’s (The International Society for Optical
Engineers) International Symposium on BiOS ’99 Conference 3597: Optical
Tomography and Spectroscopy of Tissue III, 24-28 January 1999, San Jose, California.
•
Served as a Chair of Session 1: Theory, of the SPIE’s International Symposium on BiOS
’99 Conference 3597: Optical Tomography and Spectroscopy of Tissue III, 24-28
January 1999, San Jose, California.
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•
•
Served on the contributed presentation selection panel of the Advances in Optical
Imaging and Photon Migration 1998 Conference, Optical Society of America, 8-11
March 1998, Orlando, Florida.
Member, American Physical Society, Optical Society of America, and the New York
Academy of Sciences.
•
Member, Executive Committee, Center for Advanced Technology, CUNY.
•
Member, National Science Foundation’s (NSF) Integrative Graduate Education and
Research Training (IGERT) Center for Optical Techniques for Actuation, Sensing and
Imaging of Biological Systems, at Columbia University 2008 –
•
Member, Executive Committee and Co-PI (PI: D. Akins) National Science Foundation’s
(NSF) Center of Research Excellence in Science and Technology (CREST) Center for
Exploitation of Nanostructures in Sensors and Energy Systems at CCNY, 2008 -
24
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