WATER-COOLED TYPE
DEUTERIUM LAMPS
L1314, L1835
High Intensity, 150 W Type,
Vacuum UV (from 115 nm) Light Source - L1835
The L1314 and L1835 are water-cooled 150 W deuterium lamps that
deliver a radiant intensity 3 to 4 times higher than standard 30 W deu-
terium lamps. The lamp bulb is enclosed in a cylindrical metal jacket
specially designed for water cooling. The L1314 has a synthetic silica
window for an efficient emission of UV radiation, and the L1835 em-
ploys a MgF2 (magnesium fluoride) window which even allows emit-
ting vacuum UV radiation. Select the lamp that matches wavelengths
required by your application. Vacuum flanges are also available as op-
tions in the L1835 for easy mounting to a vacuum chamber.
APPLICATIONS
GSpectrophotometer, Fluorescence Spectrophotometer
GRemoval of static electricity from the semiconductor wafer
GPID (Photo Ionization Detector)
GSolar Simulator
TLSOF0140
LLeft: L1835 Right: L1314
Figure 1: Spectral Distribution
GOptical CVD
GOptical Chemical Reaction
GExcitation Light Source
L1314: UV range
1.2 TLSOB0055EB
1.0
L1314
SPECIFICATIONS
0.5
GENERAL
Parameter
Spectral Distribution
Window Material
Aperture Size
L1314
L1835
115 to 400
MgF2
Unit
nm
—
mm dia.
—
160 to 400
Synthetic silica
0.1
2.5
Water cooling
720
No
A
Cooling Method
30 W TYPE
0.05
g
—
950
Yes
Weight (Approx.)
Installation to Vacuum Port
RECOMMENDED OPERATING CONDITION / CHARACTERISTICS (at 25 °C)
0.01
Parameter
Heater Voltage (DC, AC)
Warm-up Heater Current (DC, AC)
Warm-up Time
Value
10
1.2
Unit
160
200
240
280
320
360
400
1
V
WAVELENGTH (nm)
A Typ.
s
V
A Typ.
V Min.
A
20
5
1
L1835: Vacuum UV range
Heater Voltage (DC)
Heater Current (DC)
Operation
TLSOB0054EB
100
160.8
500
1.2
120 10
1.0
Discharge Starting Voltage (DC)
Anode Current
Tube Drop Voltage (DC)
V
80
%/h
% p-p
L/min
h
Output
Drift (Max.)
125.4
0.5
1.5
300
Stability Fluctuation (Max.)
Water Flow Rate
Estimated Life
121.6
60
NOTE: ATypes L1314 and L1835 cannot be
operated without cooling water passing
through them. Care should be taken that
the lamp is positioned properly so that
the two nozzles are aligned vertically,
with the water flowing into the jacket at
the bottom nozzle and leaving the jacket
at the top nozzle. If this arrangement is
not observed, there is a danger of
damaging the lamp due to overheating.
40
20
0
Flow of cooling water
OUTLET
U
P
INLET
110
120
130
140
150
160
170
TLSOC0016EC
WAVELENGTH (nm)
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are
subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2006 Hamamatsu Photonics K.K.