Abstract
Using electromagnetic theory, we first establish that a triangular-groove dielectric grating can be optimized to concentrate all the transmitted energy into only one transmitted order. This is done by evaporating an infinitely thin layer of a perfectly conducting metal on the small facet of the grooves. The +1-order transmitted efficiency then approaches 96%, the difference from 100% being due to only the Fresnel normal reflection on the large facet. Second, a similar study is conducted with an antireflection coating added to the large facet. A diffraction efficiency of 100% is then theoretically obtained.
© 1990 Optical Society of America
Full Article | PDF ArticleMore Like This
T. Delort, D. Maystre, and J. P. Laude
J. Opt. Soc. Am. A 13(10) 2034-2040 (1996)
Huaijun Wang, Dengfeng Kuang, and Zhiliang Fang
J. Opt. Soc. Am. A 25(6) 1253-1259 (2008)
Oliver Sandfuchs, Daniel Pätz, Stefan Sinzinger, Alexander Pesch, and Robert Brunner
J. Opt. Soc. Am. A 25(8) 1885-1893 (2008)