Temperature controllers and cooling modules are very important parts of any laser device using diodes. This is because the regulation of the laser diode operating temperature is crucial for its lifetime. It is necessary to provide very efficient cooling or choose a compromise between the life of the diode and the performance of the device when setting the operating parameters for professional laser systems. For optimal cooling, Opt Lasers offers many types of TEC controllers, cooling modules, and Peltier modules (TEC modules). TEC modules are the heart of most temperature control systems.