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Conferences > CLEO_Europe > 1994 > CTuK > CTuK40

High quality beam generation in multikilowatt cw CO2 laser with all-metal mirror resonator

V. B. Shulyat'ev, A. I. Ivanchenko, A. G. Ponomarenko, and G. N. Grachev

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Abstract

A high quality beam is required for many applications of material processing.1 A resonator length and/or power density at a partially transmitting output coupler present limitations on power of cw CO2 lasers with TEM00 mode. A self-filtering unstable resonator (SFUR)2 makes it possible to generate a Gaussian-like intracavity beam. This scheme has been applied to cw CO2 lasers too.3,4 But central obscuration deteriorates the output beam quality.

© 1994 IEEE

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