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Proceedings Paper

Supersonic COILs at Ben-Gurion University: (1) experiments on 10-cm gain-length device and (2) computational fluid dynamics modelling
Author(s): Ilan Brami-Rosilio; Karol Waichman; Boris D. Barmashenko; Salman Rosenwaks
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Paper Abstract

Experimental and theoretical work in progress on supersonic COILs at Ben-Gurion University is reported. Following the achievement of a record value (40%) for the chemical efficiency of a supersonic 5-cm gain length COIL in our lab, a 10- cm gain length device was experimentally studied. Maximum output power exceeding 0.6 kW with chemical efficiency of 35% was obtained for 1% total mirror transmission in preliminary studies. Comparing the results of three-dimensional computational fluid dynamics model calculations to available experimental results [Nikolaev et al., IEEE J. Quantum Electron. 38, 421 (2002)], we show that the model is applicable to high pressure, ejector type chemical oxygen-iodine laser (COIL), reasonably reproducing the measured gain and temperature.

Paper Details

Date Published: 17 April 2009
PDF: 8 pages
Proc. SPIE 7131, XVII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 71310D (17 April 2009); doi: 10.1117/12.816447
Show Author Affiliations
Ilan Brami-Rosilio, Ben-Gurion Univ. of the Negev (Israel)
Karol Waichman, NRCN (Israel)
Boris D. Barmashenko, Ben-Gurion Univ. of the Negev (Israel)
Salman Rosenwaks, Ben-Gurion Univ. of the Negev (Israel)

Published in SPIE Proceedings Vol. 7131:
XVII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Rui Vilar; Olinda Conde; Marta Fajardo; Luís O. Silva; Margarida Pires; Andrei Utkin, Editor(s)

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