Chapter 4
Description4.1 Chapter overview
This chapter gives a basic description of the Quan-
tum Cascade Laser Starter Kit system and its com-
position.
4.2 S ystem Composition
The Quantum Cascade Laser Starter Kit is made
up of the following items:
(1) Laboratory Laser Housing (LLH100)
(2) Temperature Controller (TCU151)
(3) QCL pulse switching unit (LDD100)
(4) QCL pulser timing unit (TPG128)
For operation of the system, the user must pro-
vide a stabilized DC power supply capable of de-
livering DC current that corresponds to the laser
peak current multiplied with the specified duty cy-
cle at the specified LDD100 voltage: refer to the
datasheet of the laser.
CAUTION !
Do not lift TCU151 or TPG128 onlyon the top
cover, since this might loosen the connection be-
tween the cover and the chassis.
TPG128−TTLPulseGenerator
OFF
TCU151
ON
P
owe
T
r
e
m
p
e
r
a
tu
r
0
e
.
C
2
o
t
n
o
t
2
r
.
o
2
l
µ
l
s
0
e
.
r
5to10.5µs
5to105µs
0to200ns
−−−−−−−−−Period−−−−−−−−−−Duration−
GateINTrigOUTOut1Out2
50ohms50ohms50ohms
max60mA
+12V
0V
connected to + hi High Voltage
Pulse on top, Bottom
Output
Current control Max 60V
Power supply 12V
Input
LDD 100
Monitor 20 A/V, Z50 Ohm
3
1
4
2
Fig.2: Quantum Cascade Laser Starter Kit