High Power Repetitive TEA CO₂ Pulsed Laser¹

Guilong Yang*, Dianjun Li, Jijiang Xie, Laiming Zhang, Fei Chen,
Jin Guo, and Lihong Guo

State Key Laboratory of Laser Interaction with Matter, Changchun Institute of Optics, Fine Mechanics and Physics,
Chinese Academy of Sciences, Changchun, 130033 China

*e-mail: yanggl@ciomp.ac.cn

Received February 4, 2012; in final form, March 10, 2012; published online June 12, 2012

Abstract—A high power repetitive spark-pin UV-preionized TEA CO₂ laser system is presented. The dis-
charge for generating laser pulses is controlled by a rotary spark switch and a high voltage pulsed trigger. Uni-
form glow discharge between two symmetrical Chang-electrodes is realized by using an auto-inversion circuit.
A couple of high power axial-flow fans with the maximum wind speed of 80 m/s are used for gas exchange
between the electrodes. At a repetitive operation, the maximum average output laser power of 10.4kW 10.6 m
laser is obtained at 300 Hz, with an electro-optical conversion efficiency of 15.6%. At single pulsed operation,
more pumping energy and higher gases pressures can be injected, and the maximum output laser energy of 53
J is achieved.

DOI: 10.1134/S1054660X12070158

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