The problem of diffraction of electromagnetic waves by 2D periodic metal gratings is solved with allowance for the finite permittivity of a metal in the optical band. The developed mathematical model...
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26 August 2014 in Journal of the Optical Society of America B
Optics InfoBase is the Optical Society's online library for flagship journals, partnered and copublished journals, and recent proceedings from OSA conferences.
21 January 2005 in Journal of Optics A: Pure and Applied Optics
A rigorous and an approximate method are applied to solve the problem of diffraction of electromagnetic waves of the optical range from a 2D grating made of rectangular metal strips. The rigorous method is based on the numerical-analytical method of the solution of a volume integro-differential equation (VIDE). In the second method, the approximate boundary conditions (ABCs) for a thin dielectric layer are used. The correctness of the ABC method applied for determining the basic physical regularities is justified. More accurate ABCs and the notion of effective dimensions of strips are introduced.