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Proceedings Paper

Parametric study of a high-average-power XeCl laser
Author(s): Bruno Godard; Emmanuel Estocq; Franck Joulain; Pierre Murer; Marc X. Stehle; Jean C. Bonnet; Daniel R. Pigache
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Paper Abstract

A wide-aperture, x-ray preionized discharge pumped XeCl laser is described. The laser head is included in a gas circulation loop. The x-ray generator is made of a secondary emission electron gun. The x-ray pulse duration is 400 ns (FWHM). The laser energy (EL) and the average power are given as a function of various parameters: charging voltage (Vc), buffer gas pressure (PL), total capacitance (CT), the interelectrode distance (d), and the repetition rate. The laser discharge is driven by a classical LC-inversion circuit. The stored energy (ES) in the capacitor bank is CTxVc2/2 and the efficiency is defined by EL/ES. Up to a repetition rate of 50 Hz, the laser energy per pulse remains almost constant, with low fluctuations. The best efficiency, for different pressures, is obtained for the same Vc/PLxd value. The optimal buffer gas pressure decreases with an increase of the total capacitance. More than 4.5 J per pulse, single shot, have been extracted from a 40 X 5.8 X 4 cm3 discharge (efficiency equals 1%). At a lower laser energy level (2.5 J), the maximum efficiency reaches 2.5%. An average output power of 175 W has been obtained. With this device, good preliminary results on Kr/F2/Ne mixture are given.

Paper Details

Date Published: 1 September 1991
PDF: 7 pages
Proc. SPIE 1503, Excimer Lasers and Applications III, (1 September 1991); doi: 10.1117/12.46960
Show Author Affiliations
Bruno Godard, SOPRA (France)
Emmanuel Estocq, SOPRA (France)
Franck Joulain, SOPRA (France)
Pierre Murer, SOPRA (France)
Marc X. Stehle, SOPRA (France)
Jean C. Bonnet, ONERA (France)
Daniel R. Pigache, ONERA (France)

Published in SPIE Proceedings Vol. 1503:
Excimer Lasers and Applications III
Tommaso Letardi; Lucien Diego Laude, Editor(s)

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