1-J 500-Hz MOPA solid state laser pumped by diodes

A diodes pumped high average power Nd:YAG rod E-O Q-switched MOPA system was designed, fabricated and tested. The laser achieved a maximum average power of 600W in a near top-hat beam with the repetition rate of 500Hz, pulse width of 15 ns. Three different type diode pump laser module with the pump power of 500W, 6.5kW and 12kW were successfully developed for master-oscillator and amplifiers. The modules have an efficient absorption of the pumped light and homogeneous pump beam distribution in the laser medium.