A semi-analytic theory extends existing models for asymmetric dielectric gratings, indicating broader applications.
A general and simple semi-analytic theory of multilayer dielectric gratings is presented. It extends a previous work [J. Opt. Soc. Am. A 41, 252 (2024)] that assumes symmetric grating profile and Littrow mounting to gratings of asymmetric profiles in off-Littrow mounting.
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Lifeng Li (2025) studied this question.
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