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Proceedings Paper

Acoustic-wave-damping experimental study in x-ray preionized high-repetition rate XeCl
Author(s): Patrick Canarelli; Marc L. Sentis; Philippe Ch. Delaporte; Bernard L. Fontaine; Bernard M. Forestier
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Paper 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.

Paper Details

Date Published: 1 August 1990
PDF: 11 pages
Proc. SPIE 1278, Excimer Lasers and Applications II, (1 August 1990); doi: 10.1117/12.20606
Show Author Affiliations
Patrick Canarelli, Institut de Mecanique des Fluides de Marseille (France)
Marc L. Sentis, Institut de Mecanique des Flui (France)
Philippe Ch. Delaporte, Institut de Mecanique des Flui (France)
Bernard L. Fontaine, Institut de Mecanique des Flui (France)
Bernard M. Forestier, Institut de Mecanique des Flui (France)

Published in SPIE Proceedings Vol. 1278:
Excimer Lasers and Applications II
Tommaso Letardi, Editor(s)

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