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Proceedings Paper

Factors affecting the efficiency in four-wave mixing of pulsed CO2 laser radiation in sulfur hexafluoride
Author(s): Wolfgang Riede; Thomas Hall; Hans Hermann Klingenberg
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Paper Abstract

An investigation was made determining the parameters affecting the phase conjugate reflectivity in a four-wave mixing scheme using a pulsed TEA CO2 laser and gaseous sulfur hexafluoride (SF6) as the nonlinear medium. With a low energy CO2 laser (60 mJ pulse energy) an optimum energy reflectivity of 20 % was achieved at a pump-probe angle of 30 mrad, a SF6 pressure of 50 hPa at the lOiim P(1O) laser transition for exactly aligned counterpropagating pump waves. In addition, the reflectivity showed a substructure when enlarging the angular mismatch between the pump waves. A simulation of the phase conjugate intensity distribution was carried out solving the Kirchhoff- Fresnel integral equation.

Paper Details

Date Published: 1 October 1990
PDF: 7 pages
Proc. SPIE 1276, CO2 Lasers and Applications II, (1 October 1990); doi: 10.1117/12.20568
Show Author Affiliations
Wolfgang Riede, DLR (Germany)
Thomas Hall, DLR (Germany)
Hans Hermann Klingenberg, DLR (Germany)

Published in SPIE Proceedings Vol. 1276:
CO2 Lasers and Applications II
Hans Opower, Editor(s)

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