Datasheet

Chapter 1: Overview
1.3.1. Temperature Controller (TCU)
The TCU purpose is to control the laser temperature inside the LLH or HHL housing. It
powers the Peltier junction and reads the temperature from the PT100 sensor coupled
to the laser chip (see section 1.2.1). The TCU internal parameters are set in factory
according to its use with a LLH or HHL housing. It maintains a preset temperature
using the front panel knobs (internal mode) or from a user supplied voltage (external
mode). It also provides an output for real temperature monitoring. The TCU inter-
lock system protects the laser from overheating; see section 5.1 for TCU operation
procedures.
Figure 1.9.: TCU front panel.
10 QCL user’s manual v3.0