120
Light Sources
TECHNICAL
REFERENCE
Oriel Xenon Flashlamps
ACCESSORIES FOR
ORIEL LIGHT SOURCES
PHOTOLITHOGRAPHY
INSTRUMENTS
• Minimize unwanted sample excitation
• High ultraviolet peak power
• Short pulses allow time resolution
Guided Arc Lamp
This small bulb lamp, model 6426, uses arc guiding electrodes to
ensure repeatable arc paths. We solder the bulb contacts to the
trigger circuit board for highest reliability. The stability of the
light output is excellent with a variation of less than 2%. The
side emitting bulb has a 3 mm arc gap and a fused silica
envelope for highest UV output. Arc dimensions are 3 x 2.5 mm.
Maximum pulse energy is 0.32 J. We operate this lamp to 100 Hz.
Lamp life is greater than 108 flashes.
-1
75 W
CONTINUOUS
ARC LAMP
-2
Our flashlamps offer certain advantages over DC arc lamps; they
have relatively higher UV output and they emit in short pulses.
The short, microsecond, pulses have application in lifetime and
kinetic studies. We offer two xenon flashlamps: a 0.32 J and
5 J lamp, for spectral irradiance curves. This page describes the
flashlamps only; see page 118 for information on the power
supply, housing and other components necessary to build
complete Flashlamp Systems.
IRRADIANCE AT 0.5 m (mW m nm )
6426 and 6427 Xenon Flashlamps, with 68826 Power Supply.
10
1
6427 FLASHLAMP
RUNNING AT 60 Hz
WITH THE 68826
POWER SUPPLY
0.1
200
400
600
800
1000
WAVELENGTH (nm)
Fig. 1 Comparison of average irradiance at 0.5 m from the 6251 75 W xenon DC
arc lamp and the 6427 Large Bulb Flashlamp running at 60 Hz (60 W average).
5 J Large Bulb Lamp
This rugged lamp has a 3 mm electrode gap. The lamp radiates
from an intense 3 x 2.5 mm volume, and the envelope is high
quality fused silica. You can operate this lamp from low
frequencies up to 60 Hz. The input pulse energy, 5 J at
frequencies up to 12 Hz, falls to 1 J at 60 Hz. This doesn’t greatly
influence the spectral distribution and average irradiance, but the
spectral energy density produced by each pulse follows Fig. 3.
RELATIVE POWER
SOLAR SIMULATORS
MONOCHROMATOR AND
FIBER ILLUMINATORS
INCANDESCENT SOURCES
ARC SOURCES
DEUTERIUM SOURCES
CALIBRATION SOURCES
• Excellent sources of low to medium power UV-NIR
CW radiation
1.6 µs
A Note About EMI
Arc lamp ignition requires high voltage, high frequency pulses
to break down the lamp, and a high current discharge to sustain
the arc. Ignition creates significant electromagnetic energy,
which may occasionally interfere with associated equipment.
Even EMI proofed circuits may require extra attention to
earthing, cable routing and EMI shielding, to avoid ignition
interference. Interference may be more problematic with a
pulsed arc lamp system as each pulse requires lamp ignition.
0
10
20
30
TIME (µs)
Fig. 2 Pulse shape of 6426 Xenon Flashlamp.
Phone: 1-800-222-6440 • Fax: 1-949-253-1680
40
50
60
Light Sources
121
TECHNICAL
REFERENCE
1.13
6426
0.32 J
GUIDED Xe
(29)
0.12
(3)
2.0
9 µs
1.18
(51)
(30)
1.88
(48)
1.5
(38)
0.25
(6.3)
2.1
CALIBRATION SOURCES
RELATIVE POWER
ARC
GAP
(54)
10
20
30
40
50
60
DEUTERIUM SOURCES
2.4
0
(61)
70
TIME (µs)
Fig. 3 Pulse shape of 6427 Xenon Flashlamp.
6427
5J
LARGE BULB Xe
0.98
(25)
3.25
ARC SOURCES
(83)
0.12
(3)
1.63
ARC
GAP
(41)
INCANDESCENT SOURCES
0.33
(8.3)
Fig. 4 Dimensional diagram of Xenon Flashlamps.
Ordering Information
Lamp Type
Effective Arc Size
Max Energy (J)
Max Power (W)
Pulsewidth
Max Repetition Rate
6426
0.32 J Xe Guided Arc
3 x 2.5 mm
0.32 J
16 W
1.6 µs
100 Hz
6427
5 J Xe Large Bulb
3 x 2.5 mm
5J
60 W
9 µs
60 Hz
WEB
See our website
for more info
MONOCHROMATOR AND
FIBER ILLUMINATORS
Model
SOLAR SIMULATORS
PHOTOLITHOGRAPHY
INSTRUMENTS
ACCESSORIES FOR
ORIEL LIGHT SOURCES
Email: sales@newport.com • Web: newport.com