In-situ optical coatings on subsurface-damage removed substrate

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:552061

Yoshida, K; Hirao, T; Kamimura, T ^[1]

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1. Osaka Institute of Technology (Japan); and others

The development of high power lasers requires highly damage-resistant optical coatings. Present multilayer dielectric coatings, do not have sufficient laser-induced damage thresholds (LIDTs) to pulsed lasers, particularly in the short wavelength region. LIDT strongly depends on the absorption coefficient of optical coatings and the impurities on the optical substrate. The absorption coefficient of optical coatings can be minimized by optimizing the deposition conditions. However, the impurities on the optical substrate cannot be completely removed by standard optical cleaning techniques. In this paper, the significant improvement of LIDT of optical coatings on subsurface-damage removed fused silica glass due to ion beam etching is presented.

• Research Organization: International Society for Optical Engineering, Washington, DC (United States)
• OSTI ID: 552061
• Report Number(s): CONF-9510106--Vol.2714
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
COATINGS
DAMAGE
LASER RADIATION
OPTICAL SYSTEMS
SURFACE TREATMENTS