Multi-Channel Laser Diode Digital Controller (Controleur Numerique a CanauxMultiples Pour Diodes Lasers)

摘要

The present report represents the operating manual of the digital laser diodecontroller designed and fabricated at CRC. This report describes both the hardware and software of the controller. The unit allows the control of the temperature and current or power of up to one hundred lasers simultaneously. The system is built around a master controller which communicates the information between the user and slave controllers associated to the lasers. A liquid crystal display, a keypad and a rotary knob provide the user-controller interface. Microcontrollers, Motorola HC68HCl 1, are used on the master and slave controllers. The laser current may be adjusted from 0.00 mA to 200.0 mA with a 50 mA resolution. The optical power may be controlled from 0.00 mW to 40.95 mW with a 50 microW resolution. The temperature may be stabilized from 10.0 C to 35.5 C