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Proceedings Paper

Antireflection coatings of broad angle range for ultraviolet band designed by rugate coatings
Author(s): Guanliang Peng; Jiankun Yang; Shengli Chang; Hongwei Yin; Juncai Yang
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Paper Abstract

Rugate coatings are usually defined as optical coatings that present a continuous variation of refractive index in the direction perpendicular to the film plane. Such kind of optical coating has optical and mechanical properties that differ from those of conventional high-low-index stacks. Especially, the broad angle range and the low optical scatter level make them superior to traditional stacks. Antireflective (AR) coatings have found increasing applications. In this paper, the principal aspects of rugate coatings theory are discussed and the emphasis is focused on polarization effect of the incident light. The reason accounting for difference of the transmissivity was analyzed in the case of polarization and board angle incidence. To eliminate polarization effect, a method of designing antireflection coatings using rugate coatings was demonstrated. Antireflection coatings for the ultraviolet spectral region in the wavelength range 300-400 nm and incidence angle from 0 to 80 degree were designed. Then the implementation of optimization recurred to optimac and conjugate gradient. It shows that the result of optimization is ideal. For AR coatings, this design method can enhance the ratio of utilization of optical energy.

Paper Details

Date Published: 12 March 2008
PDF: 15 pages
Proc. SPIE 6624, International Symposium on Photoelectronic Detection and Imaging 2007: Optoelectronic System Design, Manufacturing, and Testing, 662424 (12 March 2008); doi: 10.1117/12.791214
Show Author Affiliations
Guanliang Peng, National Univ. of Defense Technology (China)
Jiankun Yang, National Univ. of Defense Technology (China)
Shengli Chang, National Univ. of Defense Technology (China)
Hongwei Yin, National Univ. of Defense Technology (China)
Juncai Yang, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 6624:
International Symposium on Photoelectronic Detection and Imaging 2007: Optoelectronic System Design, Manufacturing, and Testing

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