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Proceedings Paper

Numerical simulation of a high-power four-wave mixing master-oscillator power-amplifier (MOPA) system
Author(s): Wolfgang Riede; Thomas Hall; Hans Hermann Klingenberg
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Paper Abstract

By numerically solving the Kirchhoff-Fresnel integral equations, the effects of temporally varying phase distortions on the beam quality of a four-wave mixing MOPA system were investigated. Our simulation revealed that the performance of such a four-wave mixing MOPA system depends strongly on the percentage of the overall power impinging on the active area of the phase conjugate mirror. Additionally, the onset time of the laser-induced medium perturbation was calculated for a set of different gas mixtures and a range of output energies. The phase distortions produced by the transit of a shock wave orthogonal to the optical axis could be completely cancelled by the phase conjugate mirror, i.e., no effect was found when comparing the far field distributions at different times during passage of the shock wave through the mode volume.

Paper Details

Date Published: 31 March 1995
PDF: 5 pages
Proc. SPIE 2502, Gas Flow and Chemical Lasers: Tenth International Symposium, (31 March 1995); doi: 10.1117/12.204969
Show Author Affiliations
Wolfgang Riede, DLR (Germany)
Thomas Hall, DLR (Germany)
Hans Hermann Klingenberg, DLR (Germany)

Published in SPIE Proceedings Vol. 2502:
Gas Flow and Chemical Lasers: Tenth International Symposium
Willy L. Bohn; Helmut Huegel, Editor(s)

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