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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 7, Iss. 8 — Aug. 1, 1990
  • pp: 1494–1502

Boundary-element analysis of plane-wave diffraction from groove-type dielectric and metallic gratings

Yasunori Nakata and Masanori Koshiba  »View Author Affiliations


JOSA A, Vol. 7, Issue 8, pp. 1494-1502 (1990)
http://dx.doi.org/10.1364/JOSAA.7.001494


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Abstract

A numerical approach based on the boundary-element method (BEM) is described for the analysis of plane-wave diffraction from groove-type gratings. First, the diffraction problem is exactly analyzed as a two-medium boundary-value problem. Further, for metallic gratings, a simple method in which an approximate boundary condition using the surface impedance is combined with the BEM is proposed. Both cases of the TE- and TM-wave incidences are systematically formulated. Numerical examples are presented for dielectric holographic gratings and metallic Fourier gratings, and the validity of the BEM and the effectiveness of the surface-impedance approximation are confirmed.

© 1990 Optical Society of America

History
Original Manuscript: June 16, 1989
Manuscript Accepted: October 24, 1989
Published: August 1, 1990

Citation
Yasunori Nakata and Masanori Koshiba, "Boundary-element analysis of plane-wave diffraction from groove-type dielectric and metallic gratings," J. Opt. Soc. Am. A 7, 1494-1502 (1990)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-7-8-1494

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