LiNbO3 Single Crystal
Typical Properties
Crystal Structure
Hexagonal
Growth Method
CZ
Melting Point
1250 oC
Density
4.64 g/cm3
Curie Temperature
~ 1160 oC
Hardness
Thermal expansion
a=5.148 Å, c= 13.863Å
5 Mohs
(x10-6/ oC)
11: 15.4
33: 7.5
Index of Refraction
o=2.286
Transmission wavelength
0.4 ~ 2.90 
d33=34.45, d31=d15=5.95 d22=13.07
13=8.6, 22=3.4,  33=30.8, 51=28.0,  22=6.00
370 ~ 5000 nm
> 68 % @ 632.8 nm
Nonlinear coefficient
Electro-optical Coefficient
Transparency Range
Transmissivity
Sellmeier Equation (  in m )
e=2.203 at 632.8 nm
o2 () = 4.9048 + 0.11768/(2 –0.04750) – 0.027169  2
e2 () = 4.5820 + 0.099169/(2 –0.04443) – 0.021950  2
LiNbO3 Finished Components
Size
Any size below 4" diameter boule
Tolerance of size
Z-axis:  0.3 mm
X-axis and Y-axis:  0.1 mm
Chamfer
Less than 0.5 mm at 45o  5o
Accuracy of orientation
Parallelism
Finish
Flatness
AR-coating
Wavefront distortion
Extinction ratio
Z-axis: < 5’
X-axis and Y-axis: < 10’
< 10”
10/5 scratch/dig
/8 at 632.8 nm
Reflectance < 0.2% @ 1064 nm
< /4 @ 633 nm
> 400:1 @ 633 nm,  6mm beam
(pmV-1)
(pmV-1)
STOICHIOMETRIC LITHIUM NIOBATE ( SLN)
Stoichiometric Lithium Niobate ( SLN) is grown by a patented technique with
superior uniformity and composition. SLN features with high electro-optic and
non-linear coefficients, It can be used in applications including E-O modulators,
frequency doublers, Q-switches, waveguide substrates, etc… In recent years,
periodically poled LN (PPLN) has opened the door to new and exciting
applications such as all-solid-state laser source and RGB laser display.
SLN
PROPERTIES at 25 oC
Chemical Formula
LiNbO3
Composition
49.8 mole%Li2O
Melting Point
1160-1200°C incongruent melting
Crystal Structure
trigonal
Space Group
R3c
Point Group
3m
Lattice Constant
a=5.14829 Å, c=13.8631 Å (hex)
Density
Hardness
Thermal Expansion Coefficient
Curie Temperature
Spontaneous Polarization
Dielectric Constants
-3
4.612 g-cm
5 moh
-6
-6
-1
a=16.7x10 , c=2.0 x 10 °C
1200 °C
2
0.71 Coul/m
s
s
ε =44, ε =29, ε
11
33
T
=84, ε
11
T
=30
33
Coercive field
<4.0 KV/mm
Bandgap
3.9 eV
Transmission Range
305 to 5500 nm
Refractive Index at 1064nm
no=2.2411, ne=2.1510
NLO Coefficients at 1064nm
d31=-6.3, d33=-44 pm/V
Electro-optic Coefficients at 633nm (constant tension)
r13=10.4, r22=6.8, r33=38.3 pm/V
Sellemier Equation (λ in μm)
Specifications of SLN Wafer
Standard Orientation
Z-cut
Orientation Tolerance
±0.5 ° or better
Typical Size, inch
2” and 3”
Size Tolerances
±0.5 mm for diameter, ±0.1 mm for thickness
Surface Quality
< 5A ( by AFM)
Single Domain and Polarity label
Available
MTI Corporation
860 South 19th Street, Richmond, CA 94804, USA
Tel: (510)525-3070 Fax: (510)525-4058 E-mail: info@mtixtl.com Website: www.mtixtl.com