Parametric study of a high-average-power XeCl laser

Bruno Godard; Emmanuel Estocq; Franck Joulain; Pierre Murer; Marc X. Stehle; Jean C. Bonnet; Daniel R. Pigache

doi:10.1117/12.46960

1 September 1991 Parametric study of a high-average-power XeCl laser

Bruno Godard, Emmanuel Estocq, Franck Joulain, Pierre Murer, Marc X. Stehle, Jean C. Bonnet, Daniel R. Pigache

Proceedings Volume 1503, Excimer Lasers and Applications III; (1991) https://doi.org/10.1117/12.46960
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands

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.

Citation Download Citation

Bruno Godard, Emmanuel Estocq, Franck Joulain, Pierre Murer, Marc X. Stehle, Jean C. Bonnet, and Daniel R. Pigache "Parametric study of a high-average-power XeCl laser", Proc. SPIE 1503, Excimer Lasers and Applications III, (1 September 1991); https://doi.org/10.1117/12.46960

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