Experimental investigation of pulsed chemical oxygen-iodine lasers powered by gas discharge with the assistance of surface sliding discharge pre-ionization

Continuous wave chemical oxygen-iodine laser can be turned into pulsed operation mode to obtain higher peak power by means of gas discharge. An electrode system with the assistance of surface sliding pre-ionization was proposed to solve the problem of the stable glow discharge with large aperture. The electrode system was applied in pulsed COIL. Laser energy up to 4.4 J with a pulse duration of 58 s was obtained and pulse peak power was 75 kW. The ratio of pulse peak power to continue power was 63. The influence of P and output coupling mirror on laser characteristics was investigated.