Acoustic-wave-damping experimental study in x-ray preionized high-repetition rate XeCl

Patrick Canarelli; Marc L. Sentis; Philippe Ch. Delaporte; Bernard L. Fontaine; Bernard M. Forestier

doi:10.1117/12.20606

1 August 1990 Acoustic-wave-damping experimental study in x-ray preionized high-repetition rate XeCl

Patrick Canarelli, Marc L. Sentis, Philippe Ch. Delaporte, Bernard L. Fontaine, Bernard M. Forestier

Proceedings Volume 1278, Excimer Lasers and Applications II; (1990) https://doi.org/10.1117/12.20606
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

To increase the pulse repetition frequency, the average power, and the beam quality of excimer laser systems, damping of the strong acoustic waves induced by the active medium excitation must be solve. In order to achieve this goal different electrodes and acoustic damping configuration have been studied. Excitation of active medium (energy deposition : 50 to 150 J/l) at high repetition rate (up to 1 000 Hz) in a subsonic loop (flow velocity : up to 65 m/s) is achieved by means of a classical discharge, through transfers capacitors. The discharge is preionized by X-Ray generated by a wire ion plasma gun. Previous studies done at I.M.F.M. have shown that the density perturbations, induced by successive excitations at high repetition rate (up to 1000 Hz), can involve output energy decrease. Here, we will present and discuss the density or pressure perturbation maximum level which don't involve this laser energy decrease; acoustic and thermal effects have been notably took account. We will study the possibilities of fast pressure perturbations damping.

Citation Download Citation

Patrick Canarelli, Marc L. Sentis, Philippe Ch. Delaporte, Bernard L. Fontaine, and Bernard M. Forestier "Acoustic-wave-damping experimental study in x-ray preionized high-repetition rate XeCl", Proc. SPIE 1278, Excimer Lasers and Applications II, (1 August 1990); https://doi.org/10.1117/12.20606

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