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Proceedings Paper

High-efficiency high-power cw solid state lasers for material processing
Author(s): Heinz P. Weber; Thomas Graf; Rudolf Weber
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Paper Abstract

The maximum power range over which a laser resonator supports stable oscillation is mainly determined by the material constants of the active medium and by the cooling schemes. The power range for stable fundamental-mode operation can be shifted to higher powers with special cavity design and intra-cavity optics but the width of the stability range will be unaffected and can be enlarged only with adaptive optics. We present investigations on a multi- rod laser cavity and a high-power side-pumped laser system. In order to obtain constant beam parameters with varying power we prose a novel self-adaptive method to compensate for the power-dependent thermal lenses in high-power lasers.

Paper Details

Date Published: 25 February 2000
PDF: 6 pages
Proc. SPIE 4070, ALT '99 International Conference on Advanced Laser Technologies, (25 February 2000); doi: 10.1117/12.378148
Show Author Affiliations
Heinz P. Weber, Univ. of Berne (Switzerland)
Thomas Graf, Univ. of Berne (Switzerland)
Rudolf Weber, Univ. of Berne (Switzerland)

Published in SPIE Proceedings Vol. 4070:
ALT '99 International Conference on Advanced Laser Technologies
Vladimir I. Pustovoy; Vitali I. Konov, Editor(s)

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