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Proceedings Paper

Gain saturation effects and beam symmetrization in fast-transverse-flow industrial lasers with folded resonators
Author(s): Nikolai A. Generalov; Valery S. Moskalev; Nikolai G. Solov'yov; Mikhail Yu. Yakimov; Vladimir P. Zimakov
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Paper Abstract

Different N-folded multiple-pass resonator schemes were realized and tested in high power fast-transverse-flow CO2 lasers. In all cases beam ellipticity occur due to gain saturation followed by beam self-action in active medium with fast transverse gas flow. To avoid this effect new resonator structure was proposed where N-folded passes are arranged in different crossed planes declined to the gas flow direction. Fast-transverse-flow industrial CO2 laser "Lantan" with this resonator scheme demonstrates high beam quality up to 2.5 kW CW output power with differential efficiency of 16%.

Paper Details

Date Published: 25 June 2003
PDF: 8 pages
Proc. SPIE 4969, Laser Resonators and Beam Control VI, (25 June 2003); doi: 10.1117/12.499269
Show Author Affiliations
Nikolai A. Generalov, Institute for Problems in Mechanics (Russia)
Valery S. Moskalev, 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. 4969:
Laser Resonators and Beam Control VI
Alexis V. Kudryashov; Alan H. Paxton, Editor(s)

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