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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1992),
  • paper CFF4

Highly focusable beams from a high-power CO2 transverse flow laser with a self-filtering unstable resonator

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Abstract

One of the major problems of highpower transverse flow CO2 lasers is quality of the beam extracted from a highly inhomogeneous active medium. Different types of unstable resonator configuration have been recently proposed to increase the focusability of the beam obtained by this type of laser.1-3 Here we report on the characteristics of the beam produced by a self-filtering unstable resonator (SFUR)4-5 and on the penetration tests performed at different power levels on standard stainless steel samples.

© 1992 Optical Society of America

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