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Proceedings Paper

Experimental and numerical studies of single-mode laser operation in unstable resonator with semitransparent output coupler and intracavity astigmatism
Author(s): Pavel Anatolievich Mikheyev; Nikolay V. Kupryaev; Alexander Anatolievich Shepelenko
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Paper Abstract

The possibility and conditions of single mode laser operation for lasers with resonator Fresnel number up to 10 and substantial intracavity astigmatism employing unstable resonator with uniform semitransparent output coupler (URUSC) have been investigated experimentally. The influence of astigmatism may be significant in multipass resonators with spherical folding mirrors. The experimental condition of single mode operation in URUSC was for the resonator to be in an unstable region if only for one plane of symmetry determined by astigmatism. At the same time in the other plane the resonator might be stable. Comparison of the far field measurements with numerical simulations was performed. It revealed that even if equivalent Fresnel number in `unstable plane' was greater than unit the laser operation was still single mode.

Paper Details

Date Published: 29 March 1996
PDF: 5 pages
Proc. SPIE 2702, Gas and Chemical Lasers, (29 March 1996); doi: 10.1117/12.236897
Show Author Affiliations
Pavel Anatolievich Mikheyev, P.N. Lebedev Physics Institute (Russia)
Nikolay V. Kupryaev, P.N. Lebedev Physics Institute (Russia)
Alexander Anatolievich Shepelenko, P.N. Lebedev Physics Institute (Russia)

Published in SPIE Proceedings Vol. 2702:
Gas and Chemical Lasers
Robert C. Sze, Editor(s)

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