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Proceedings Paper

Diamond gradient index "moth-eye" antireflection surfaces for LWIR windows
Author(s): Alan B. Harker; Jeffrey F. DeNatale
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Paper Abstract

An optical surface can be microscopically textured in a pattern with physical features whose dimensions are below that of the operational wavelength to produce a physical gradient in the effective optical index of refraction. The performance of such 'moth-eye' surface features, typically cones or pyramids, can be predicted based on dielectric mixture models by use of the optical properties of the base material and air. The performances of LWIR antireflective moth- eye surfaces formed in silicon, germanium and diamond are consistent with theoretical predictions.

Paper Details

Date Published: 14 December 1992
PDF: 7 pages
Proc. SPIE 1760, Window and Dome Technologies and Materials III, (14 December 1992); doi: 10.1117/12.130803
Show Author Affiliations
Alan B. Harker, Rockwell International Science Ctr. (United States)
Jeffrey F. DeNatale, Rockwell International Science Ctr. (United States)

Published in SPIE Proceedings Vol. 1760:
Window and Dome Technologies and Materials III
Paul Klocek, Editor(s)

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