Investigation and optimization of generation performances of a CO2 laser with unstable resonator and output variable-reflectivity mirror

Michail G. Galushkin; Vladimir P. Yakunin; Vadim V. Samarkin; Valentina Ye. Zavalova

doi:10.1117/12.335856

5 January 1999 Investigation and optimization of generation performances of a CO2 laser with unstable resonator and output variable-reflectivity mirror

Michail G. Galushkin, Vladimir P. Yakunin, Vadim V. Samarkin, Valentina Ye. Zavalova

Author Affiliations +

Proceedings Volume 3686, Laser Optics '98: Gas, Liquid, and Free-Electron Lasers; (1999) https://doi.org/10.1117/12.335856
Event: Laser Optics '98, 1998, St. Petersburg, Russian Federation

Abstract

Generation performances of the multikilowatt cw CO₂ laser with unstable resonator and output variable reflectivity mirror (VRM) have been investigated depending on the resonator magnification, aperture of the diaphragms restricting the laser beam in the resonator and the VRM parameters such as reflectivity and profile of the reflecting zone. A possibility of good matching of the parameters of optical resonator and the gas-discharge chamber of the laser was shown both theoretically and experimentally. The beam divergence three times better than that of the stable resonator has been achieved at decreasing the generation power only by 15%.

Citation Download Citation

Michail G. Galushkin, Vladimir P. Yakunin, Vadim V. Samarkin, and Valentina Ye. Zavalova "Investigation and optimization of generation performances of a CO2 laser with unstable resonator and output variable-reflectivity mirror", Proc. SPIE 3686, Laser Optics '98: Gas, Liquid, and Free-Electron Lasers, (5 January 1999); https://doi.org/10.1117/12.335856

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