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Proceedings Paper

Beam-quality improvement by means of unstable resonator with variable reflectivity output coupler
Author(s): Nikolai A. Generalov; Nikolai G. Solov'yov; Mikhail Yu. Yakimov; Vladimir P. Zimakov
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Paper Abstract

Investigations aimed at the production of high power beams with diffractionally limited quality are carrying out in the Institute for Problems in Mechanics since 1992. Up to 5 kW CW output beam characterized by M2 less than 1.7 was produced with Lantan-5 industrial fast-transverse-flow CO2 laser by means of the unstable resonator with variable reflectivity output coupling mirror (VRM). Both theoretical and experimental investigation of the parameters of the beam produced by VRM unstable resonator are presented. The results of beam quality measurements are in good agreement with theoretical evaluations, and processing performance of the beam corresponds to the measured value of M2. The quality of the output beam in resonators with VRM may be further improved by appropriate choice of the parameters of variable thickness reflective layer.

Paper Details

Date Published: 13 May 1998
PDF: 12 pages
Proc. SPIE 3267, Laser Resonators, (13 May 1998); doi: 10.1117/12.308102
Show Author Affiliations
Nikolai A. Generalov, Institute for Problems in Mechanics (Russia)
Nikolai G. Solov'yov, Institute for Problems in Mechanics (Russia)
Mikhail Yu. Yakimov, Institute for Problems in Mechanics (Russia)
Vladimir P. Zimakov, Institute for Problems in Mechanics (Russia)


Published in SPIE Proceedings Vol. 3267:
Laser Resonators
Alexis V. Kudryashov; Pierre Galarneau, Editor(s)

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