Studying the difference between OFHC mirrors and copper single-crystal mirrors under low CO2 laser energy to investigate the increasing surface roughness under thermal load

Juergen Wisotzki

doi:10.1117/12.20543

1 October 1990 Studying the difference between OFHC mirrors and copper single-crystal mirrors under low CO2 laser energy to investigate the increasing surface roughness under thermal load

Juergen Wisotzki

Author Affiliations +

Proceedings Volume 1276, CO2 Lasers and Applications II; (1990) https://doi.org/10.1117/12.20543
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

Instability of metal mirrors in C02-lasers is caused by the thermal load layed on such mirror surfaces which relieves the strain in the individual grain brought in to it by the deforination of the cutting and polishing process. A solution to this problem was sought and found in a single crystal, grown to its final form as a laser mirror, which had a one sided careful conventional polish for CW-lasers and for pulsed lasers no polish at all, but the crystal was grown against a replica of optical quality.

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Juergen Wisotzki "Studying the difference between OFHC mirrors and copper single-crystal mirrors under low CO2 laser energy to investigate the increasing surface roughness under thermal load", Proc. SPIE 1276, CO2 Lasers and Applications II, (1 October 1990); https://doi.org/10.1117/12.20543

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