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Proceedings Paper

Systematic diagnostics of a chemical oxygen-iodine laser device
Author(s): Xiangwan Du; Jianxiang Wang
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Paper Abstract

There are two kinds of diagnostics for chemical oxygen-iodine laser (COIL) system, laser device diagnostics and laser beam diagnostics. In this paper, we only discussed systematically the former. We divide them into several diagnostic subsystems such a flow diagnostic, oxygen-iodine flow mixing diagnostic, gain medium diagnostic and resonator diagnostic. In flow diagnostic, we selected some independent and easy-measured physical variables such as temperatures, pressures, flow rates and concentration of compositions to control and measure. From these diagnostics, we can obtain most of knowledge about performance evaluation parameters of COIL device system and subsystems. In oxygen-iodine flow mixing diagnostic, we indicated the mixing status by laser induced fluorescence. In gain medium diagnostic, we showed the spatial distribution of medium's small signal gain by a special device and measured the index of refraction gradients through the flow fields of chemical laser by an interferometer. And in resonator diagnostic, we are concerned about the nonuniformity of medium and the mirror deformation in resonator. During the experiment, the performance of COIL and all these diagnostics should be controlled by a computer, so we can get an immediate and comprehensive information about COIL. From these information, we can understand and then optimize the performance of the laser device.

Paper Details

Date Published: 22 December 1998
PDF: 4 pages
Proc. SPIE 3574, XII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (22 December 1998); doi: 10.1117/12.334489
Show Author Affiliations
Xiangwan Du, Institute of Applied Physics and Computational Mathematics (China)
Jianxiang Wang, Institute of Applied Physics and Computational Mathematics (China)

Published in SPIE Proceedings Vol. 3574:
XII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference
Anatoly S. Boreisho; Gennady A. Baranov, Editor(s)

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