23 March 2005 Non-chain HF and DF lasers pumped by electric discharge
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Proceedings Volume 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2005) https://doi.org/10.1117/12.611145
Event: XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2004, Prague, Czech Republic
Abstract
Effect of different excitation parameters on discharge stability in mixtures with SF6 and efficiency of discharge non-chain HF(DF)-lasers is studied using excitation by inductive and LC-generators. Experimental conditions providing maximal performance of discharge non-chain HF(DF)-lasers are determined. Uniform electric field in the laser gap, uniform preionisation, relatively short current pulse duration and input energy around 50-70 J/l provide perfect discharge uniformity and greatly improve electrical efficiency of the discharge HF(DF)-laser. Intrinsic efficiency of discharge non-chain DF and HF lasers up to ηin=7-10%, respectively, close to that obtained with an e-beam initiation is obtained. Electrical efficiency of the lasers up to η0=5-6% with the output over 1 J was demonstrated for the first time. The effect of preionisation on volume discharge formation in mixtures of H2 and hydrocarbons with SF6 is suggested, processes affecting the laser efficiency are discussed.
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Alexei N. Panchenko, Alexei N. Panchenko, Viktor M. Orlovskii, Viktor M. Orlovskii, Viktor F. Tarasenko, Viktor F. Tarasenko, "Non-chain HF and DF lasers pumped by electric discharge", Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); doi: 10.1117/12.611145; https://doi.org/10.1117/12.611145
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