Construction of a power supply unit for Nd-YAG pulse laser (300 mJ-7ns)/pulse

In This work, an electronic laser power supply was designed and constructed. It delivers electrical pulses for the flash lamp of Nd-YAG lasers, and the pulses needed for the Q-switch Pockels cell. The pulse frequency can be changed from 1 to 10 Hz. The output power is variable so the user can choose the appropriate laser power. The unit can be triggered for synchronization purposes by external pulses with a variable delay (10μs to 1s) between the trigger and the laser pulse. The output laser pulse has been characterized and its power was 300 mJ and its duration was 7 ns. All the electronic circuits were simulated on computers using PS pice in order to reach the best design. Microprocessors are used in input, control and display circuits. A special care was taken to have stable, robust and immune circuits. (Author)