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Starter Kit Instruction Manual Use 32
6.4 Laser utilisation
6.4.1 Overview
In order to insur e 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 o n the water on the L L H100
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 cont rol 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
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Fig.21: Starting the TCU151
0
1
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:
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1
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6
7
Fig.22: TCU151 remote contr ol