Experimental study of discharge for 200W RF excited slab lasers

Yu Xiao; Xiahui Tang; Juan Liu; Yingxiong Qin; Fei Yan; Wang Du

doi:10.1117/12.843478

21 October 2009 Experimental study of discharge for 200W RF excited slab lasers

Yu Xiao, Xiahui Tang, Juan Liu, Yingxiong Qin, Fei Yan, Wang Du

Proceedings Volume 7515, Photonics and Optoelectronics Meetings (POEM) 2009: Industry Lasers and Applications; 75150C (2009) https://doi.org/10.1117/12.843478
Event: Photonics and Optoelectronics Meetings 2009, 2009, Wuhan, China

Abstract

An 81 MHz TEM electromagnetic wave transmitting between the electrodes would cause the nonuniform discharge along the electrodes. The variation of the voltage distribution with pressure and feed-in power bring difficulties to design match network. In order to achieve impedance matching, the 2000W RF slab discharge platform the different type of matching network are used. Through analyzing the matching network, the equivalent electrical parameter is estimated. In the experiment, though using resonance inductances the voltage distribution along the electrodes is improved. The results show that under the typical condition of the RF slab laser operation, the π matching network can work well and the reflective power is less than 5%. When a mid-feed point is used, the feed-in power is 2000W, two 28nH inductances are attached at both end of the electrodes, two 24nH inductances are fixed on both points of one-fourth of the electrodes, the uniform discharge is got on the 500mmx40mm electrodes, and the feed-in power density is 65W/cm³.

Citation Download Citation

Yu Xiao, Xiahui Tang, Juan Liu, Yingxiong Qin, Fei Yan, and Wang Du "Experimental study of discharge for 200W RF excited slab lasers", Proc. SPIE 7515, Photonics and Optoelectronics Meetings (POEM) 2009: Industry Lasers and Applications, 75150C (21 October 2009); https://doi.org/10.1117/12.843478

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