Paper
4 November 1994 Low loss mirrors at 514 nm for large interferometer optics
Harry H. Bauer, Erwin Nuessler
Author Affiliations +
Proceedings Volume 2253, Optical Interference Coatings; (1994) https://doi.org/10.1117/12.192135
Event: 1994 International Symposium on Optical Interference Coatings, 1994, Grenoble, France
Abstract
For building gravitational wave detectors large interferometer mirrors with extreme low total losses, especially low absorption losses are required. With Ion Beam Sputter Technology total losses of a few ten ppm are standard on small substrates e.g. 1 inch diameter. For the optimization of thickness uniformity on large substrates, a special double masking technique has been introduced into the coating process. Recent results for the losses of large optics at 512 nm are presented. The thickness uniformity on a 240 mm diameter substrate including the mirror center is better than +/- 0.25%. The contribution of the HR coatings to the spherical aberration of the mirrors is of the order of (lambda) /100. The absorption losses are typically below 2 ppm. The total losses are typically below 25 ppm.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Harry H. Bauer and Erwin Nuessler "Low loss mirrors at 514 nm for large interferometer optics", Proc. SPIE 2253, Optical Interference Coatings, (4 November 1994); https://doi.org/10.1117/12.192135
Lens.org Logo
CITATIONS
Cited by 2 scholarly publications.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Mirrors

Absorption

Coating

Interferometers

Ion beams

Sensors

Spectroscopy

Back to Top