Abstract

Single point diamond knives have been used to machine to microinch tolerances. This micromachining can also produce optics of high quality. Optical micromachining capabilities in terms of materials, shapes, and optical figure are discussed. Comparisons are made between micromachined mirrors and superpolished surfaces including reflectivity, absorption, scatter, roughness, autocorrelation length, and Nomarski microscopy. 10.6-μm pulsed damage data and preliminary 10.6-μm cw damage investigations are also reported. Micromachined metals are superior to conventionally polished samples and compete well with superpolished samples.

© 1974 Optical Society of America

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