Quantum Instruments Cascade Laser Starter Kit manual Laser utilisation, Overview, Proceedings

Starter Kit Instruction Manual Use

6.4Laser utilisation

6.4.1Overview

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.

6.4.2Proceedings

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.

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