Supersonic COILs at Ben-Gurion University: (1) experiments on 10-cm gain-length device and (2) computational fluid dynamics modelling

Ilan Brami-Rosilio; Karol Waichman; Boris D. Barmashenko; Salman Rosenwaks

doi:10.1117/12.816447

17 April 2009 Supersonic COILs at Ben-Gurion University: (1) experiments on 10-cm gain-length device and (2) computational fluid dynamics modelling

Ilan Brami-Rosilio, Karol Waichman, Boris D. Barmashenko, Salman Rosenwaks

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Proceedings Volume 7131, XVII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 71310D (2009) https://doi.org/10.1117/12.816447
Event: XVII International Symposium on Gas Flow and Chemical Lasers and High Power Lasers, 2008, Lisboa, Portugal

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.

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Ilan Brami-Rosilio, Karol Waichman, Boris D. Barmashenko, and Salman Rosenwaks "Supersonic COILs at Ben-Gurion University: (1) experiments on 10-cm gain-length device and (2) computational fluid dynamics modelling", Proc. SPIE 7131, XVII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 71310D (17 April 2009); https://doi.org/10.1117/12.816447

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