4 laser utilisation, 1 overview, 2 proceedings – Quantum Instruments Cascade Laser Starter Kit User Manual
Page 33: Starter kit instruction manual use 32, C) to + 6.5v (+65, Tcu151
Starter Kit Instruction Manual
Use
32
6.4
Laser utilisation
6.4.1
Overview
In order to insure a correct use and and an appropri-
ate lifetime to the laser, it is recommended to pro-
ceed according a specific order as below:
• Start water flow to cool the LLH100.
• Turn on the temperature controller and set
the desired temperature.
• Start the pulse generator.
• Switch on the power supply.
6.4.2
Proceedings
To use the Quantum Cascade Laser, proceed as fol-
lows:
[1] Make sure that the laser has been installed
properly (see page 38.
[2] If available, turn on the water on the LLH100
module.
CAUTION ! If water is not available, check
the LLH100 module temperature until desired
operating temperature is reached. The unit
has a reduced laser temperature range under
reduced heat sinking conditions. The unit may
become very hot, overheat and be destroyed.
A radiator and possibly a fan might be neces-
sary to increase the laser operating tempera-
ture range.
[3] Turn on the TCU151 instrument (6).
Note: Set the desired temperature by first push-
ing the switch (3) to Setting
◦
C to display the
objective temperature and turn the 5 turn knob
(1) to change it. Turning the switch (3) to
Real
◦
C, the display shows the present tem-
perature.
Note: To remote control the LLH100 tempera-
ture, set the switch (5) to external and provide
a voltage on the External reference (7) from
-6.5V (-65
◦
C) to + 6.5V (+65
◦
C).
[4] Plug the banana cables into the power sup-
ply unit and set output voltage to zero and
the compliance current to 100mA if pulsing a
QCL.
TCU151
Tem
pera
ture
Con
trolle
r
Alar
m
Res
et
Exte
rnal
Inte
rnal
Rea
l I
Rea
l C
Setti
ng
C
Setti
ng
+I
Setti
ng
−I
+
−
1
2
3
5
4
Fig.21: Starting the TCU151
0
1
US
E O
NLY
WIT
H
250
V
FU
SE
S / E
MP
LOY
ER
UN
IQU
EM
EN
T A
VEC
DE
S F
US
IBLE
S D
E 2
50v
110
−12
0V
22
0−2
40
V
UTP
UT
Max
: 15
V/6A
MO
NIT
OR
ING
10
mV
/ C
Zou
t: 20
0 oh
m
Exte
rna
l Re
f.
100
mV
/ C
Zin:
1 M
ohm
Inte
rloc
king
6
7
Fig.22: TCU151 remote control