16 June 2004 New HBr-laser with resonant optical pumping by DF-laser radiation
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Proceedings Volume 5479, Laser Optics 2003: High-Power Gas Lasers; (2004); doi: 10.1117/12.558363
Event: Laser Optics 2003, 2003, St. Petersburg, Russian Federation
Abstract
A new scheme of direct optical pumping of 4-μm HBr-laser was proposed being based on rather precise coincidence revealed of the principal 2P9 line of DF-laser with R2 line of the fundamental absorption band of molecular gas considered. Lasing at the use of off-axis pumping geometry (pump radiation flounce of 0.2 J/cm2, duration ~300 ns) was observed within (0.4- 15) torr of HBr pressure range. The complex behavior of HBr-laser pulse intensity, duration and time delay on the gas pressure was analyzed. Energy conversion efficiency of ~2% was achieved at P~10 torr. It is believed that the one may be substantially increased by both the optimization of HBr-laser cavity losses and the use of the collinear pump geometry with improved mode-matching.
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Andrei P. Burtsev, I. G. Burtseva, V. I. Mashendzhinov, V. V. Sudarikov, "New HBr-laser with resonant optical pumping by DF-laser radiation", Proc. SPIE 5479, Laser Optics 2003: High-Power Gas Lasers, (16 June 2004); doi: 10.1117/12.558363; https://doi.org/10.1117/12.558363
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KEYWORDS
Optical pumping

Absorption

Molecular lasers

Molecules

Energy conversion efficiency

Hydrogen

Energy efficiency

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