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Proceedings Paper

Recent advances in pulsed HF/DF lasers
Author(s): Bernard Lacour
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Paper 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.

Paper Details

Date Published: 10 November 2003
PDF: 8 pages
Proc. SPIE 5120, XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (10 November 2003); doi: 10.1117/12.515815
Show Author Affiliations
Bernard Lacour, LPGP-CNRS, Univ. Paris-Sud II (France)
Compagnie Industrielle des Lasers (France)


Published in SPIE Proceedings Vol. 5120:
XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers

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