Non-chain HF and DF lasers pumped by electric discharge

Alexei N. Panchenko; Viktor M. Orlovskii; Viktor F. Tarasenko

doi:10.1117/12.611145

23 March 2005 Non-chain HF and DF lasers pumped by electric discharge

Alexei N. Panchenko, Viktor M. Orlovskii, Viktor F. Tarasenko

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 η_in=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.

Citation Download Citation

Alexei N. Panchenko, Viktor M. Orlovskii, and 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); https://doi.org/10.1117/12.611145

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