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Proceedings Paper

Investigations for phase conjugation by stimulated Brillouin scattering of pulsed high-energy CO2 laser radiation
Author(s): Ruediger Schmitt; Manfred Hugenschmidt
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Paper Abstract

The requirements for obtaining phase conjugation due to stimulated Brillouin-scattering of CO2-laser radiation in high pressure gases have been investigated. The steady state gain factors and the phonon lifetimes for different gases at 10.6 micrometers were calculated. Simply focussing a pulsed TEA-CO2 laser beam up to power densities near below the gas breakdown threshold proved not to be sufficient for initiating the stimulated Brillouin scattering process. With a special oscillator amplifier setup and feedback system it was possible, however, to overcome these constraints so that for the first time measurements of stimulated CO2-radiation back-scattering in various gases can be reported.

Paper Details

Date Published: 1 January 1993
PDF: 12 pages
Proc. SPIE 1801, 20th International Congress on High Speed Photography and Photonics, (1 January 1993); doi: 10.1117/12.145839
Show Author Affiliations
Ruediger Schmitt, German-French Research Institute Saint-Louis (France)
Manfred Hugenschmidt, German-French Research Institute Saint-Louis (France)


Published in SPIE Proceedings Vol. 1801:
20th International Congress on High Speed Photography and Photonics
John Marks Dewey; Roberto G. Racca, Editor(s)

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