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Proceedings Paper

Catalytic enhancement of singlet oxygen production and optical gain in electric discharge oxygen-iodine laser systems
Author(s): Seonkyung Lee; Wilson T. Rawlins; Adam J. Hicks; Ian M. Konen; Emily P. Plumb; Steven J. Davis
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Paper Abstract

We are investigating catalytically enhanced production of singlet oxygen, O2(a1▵g), observed by reaction of O2/He discharge effluents over an iodine oxide film surface in a microwave discharge-flow reactor at 320 K. We have previously reported a two-fold increase in the O2(a) yields by this process, and corresponding enhancement of I(2P1/2) excitation and small-signal gain upon injection of I2 and NO2. In this paper we review observed I* excitation behavior and correlations of the catalytically generated O2(a) with atomic oxygen over a large range of discharge-flow conditions to develop a conceptual reaction mechanism for the phenomena. We describe a first-generation catalytic module for the PSI supersonic MIDJet/EOIL reactor, and tests with this module for catalyst coating deposition and enhancement of the small-signal gain observed in the supersonic flow. The results present compelling evidence for catalytic production of vibrationally excited O2(X,v) and its participation in the I* excitation process. The observed catalytic effects could significantly benefit the development of high-power electrically driven oxygen-iodine laser systems.

Paper Details

Date Published: 17 February 2011
PDF: 12 pages
Proc. SPIE 7915, High Energy/Average Power Lasers and Intense Beam Applications V, 791504 (17 February 2011); doi: 10.1117/12.877240
Show Author Affiliations
Seonkyung Lee, Physical Sciences Inc. (United States)
Wilson T. Rawlins, Physical Sciences Inc. (United States)
Adam J. Hicks, Physical Sciences Inc. (United States)
Ian M. Konen, Physical Sciences Inc. (United States)
Emily P. Plumb, Physical Sciences Inc. (United States)
Steven J. Davis, Physical Sciences Inc. (United States)

Published in SPIE Proceedings Vol. 7915:
High Energy/Average Power Lasers and Intense Beam Applications V
Steven J. Davis; Michael C. Heaven; J. Thomas Schriempf, Editor(s)

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