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Proceedings Paper

Nanosecond high-energy oscillator: regenerative amplifier excimer laser system
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Paper Abstract

Energetic nanosecond UV sources could be advantageously used in laser material processing, biomedicine and to create laser- produced plasmas emitting soft X-ray radiation. SOPRA, in collaboration with IRPHE, is then developing an oscillator- regenerative amplifier XeCl laser system of short duration (1 - 3 ns), high energy and moderate divergence. Insertion in the amplification loop of the seed pulse and final extraction of the amplified laser pulse are realized by controlling the evolution of its polarization state by means of a HT driven Pockels cell and a half-wave plate. The experimental results are discussed and compared to numerical ones issued from a code describing the amplification of the seed pulse in the active medium. Finally, it is shown that the maximum output peak power is fairly low, PL approximately 1.4 MW (EL approximately 4.8 mJ, (tau) FWHM approximately equals 3.4 ns), due to important energetic loss as the highly divergent amplified beam is truncated by low-diameter aperture.

Paper Details

Date Published: 3 April 2000
PDF: 11 pages
Proc. SPIE 3889, Advanced High-Power Lasers, (3 April 2000); doi: 10.1117/12.380906
Show Author Affiliations
Olivier P. Uteza, IRPHE/Univ. Aix-Marseille I & II (France)
Nathalie Destouches, IRPHE/Univ. Aix-Marseille I & II (France)
Philippe Ch. Delaporte, IRPHE/Univ. Aix-Marseille I & II (France)
Bernard L. Fontaine, IRPHE/Univ. Aix-Marseille I & II (France)
Marc L. Sentis, IRPHE/Univ. Aix-Marseille I & II (France)

Published in SPIE Proceedings Vol. 3889:
Advanced High-Power Lasers
Marek Osinski; Howard T. Powell; Koichi Toyoda, Editor(s)

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