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10 November 2003 Recent advances in pulsed HF/DF lasers
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Proceedings Volume 5120, XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2003) https://doi.org/10.1117/12.515815
Event: XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2002, Wroclow, Poland
Abstract
Recently, some noticeable effort as been realized in order to improve characteristics of HF/DF pulsed lasers. A few years ago it was supposed that the realization of a high energy HF/DF pulsed laser was only possible by using E-beam excitation, either for a non chain HF/DF gas mixture, or for a chain reaction mixture i.e. H2/F2 mixture. Flash lamp initiation of a high-energy chain reaction HF/DF laser was also demonstrated. However every one who wanted to make such a laser working repetitively was convinced of the difficulty of operating an E-beam system or high energy flash for large volume due to the strong electronegative character of the used gases. First attempts to realize large volume discharges have shown that this last idea was not true and that it was relatively easy to obtain homogeneous discharges in SF6 based mixture when the hydrogen donor was a hydrocarbon such as C2H4 or C6H12. This paper will present recent developments directed towards a better understanding of the discharge mechanisms and to an increase of the efficiency and of the specific output energy of HF/DF pulsed lasers by using chain reaction in discharge initiated repetitive and non-repetitive experiments.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bernard Lacour "Recent advances in pulsed HF/DF lasers", Proc. SPIE 5120, XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (10 November 2003); https://doi.org/10.1117/12.515815
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