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Proceedings Paper

Detection of vibrationally-excited O2 in COIL active medium
Author(s): Ivan O. Antonov; Valery N. Azyazov; Sergey Yu. Pichugin; Nikolay I. Ufimtsev
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Paper Abstract

The vibrationally excited oxygen in O2(a1Δg)-I mixture was detected by emission spectroscopy. The analysis of a luminescence spectra of oxygen molecules on O2(b1Σg+,υ') → O2(X3Σg-,υ") transitions has shown, that vibrationally excited O2(b1Σg+) molecules up to υ=5 are generated in the active medium of chemical oxygen-iodine laser (COIL). The highest values of relative O2(b1Σg+,υ=1) population of 22% and O2(b1Σg+,υ=2) of 10% are reached for I2 content in an oxygen flow ≈1%. It is shown theoretically, that the relative populations of O2(X3Σg-), O2(a1Δg) and O2(b1Σg+) molecules at the first and the second vibrational levels are approximately equal because of fast EE energy exchange between oxygen molecules. Up to 20% of oxygen molecules in COIL active medium are vibrationally excited.

Paper Details

Date Published: 16 June 2004
PDF: 8 pages
Proc. SPIE 5479, Laser Optics 2003: High-Power Gas Lasers, (16 June 2004); doi: 10.1117/12.558196
Show Author Affiliations
Ivan O. Antonov, P.N. Lebedev Physical Institute (Russia)
Valery N. Azyazov, P.N. Lebedev Physical Institute (Russia)
Sergey Yu. Pichugin, P.N. Lebedev Physical Institute (Russia)
Nikolay I. Ufimtsev, P.N. Lebedev Physical Institute (Russia)

Published in SPIE Proceedings Vol. 5479:
Laser Optics 2003: High-Power Gas Lasers
Oleg B. Danilov, Editor(s)

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