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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 26, Iss. 12 — Jun. 15, 1987
  • pp: 2348–2354

Perfectly conducting diffraction grating formalisms extended to good conductors via the surface impedance boundary condition

Ricardo A. Depine  »View Author Affiliations


Applied Optics, Vol. 26, Issue 12, pp. 2348-2354 (1987)
http://dx.doi.org/10.1364/AO.26.002348


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Abstract

The surface impedance boundary condition is used to include the effect of high conductivity of metals in the integral theory of perfectly conducting gratings. As an intuitive approach, the diffraction formalism proposed by Petit for the treatment of infinitely conducting gratings in P polarization is extended to highly conducting materials by introducing the concept of equivalent surface current density. Then, integral equations for both polarizations are deduced in a mathematically rigorous way. The new method is used to calculate the efficiencies of sinusoidal gratings at infrared and visible light, and the numerical results are compared with those obtained using Maxwell boundary conditions and also with the perfect conductivity model.

© 1987 Optical Society of America

History
Original Manuscript: September 20, 1986
Published: June 15, 1987

Citation
Ricardo A. Depine, "Perfectly conducting diffraction grating formalisms extended to good conductors via the surface impedance boundary condition," Appl. Opt. 26, 2348-2354 (1987)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-26-12-2348

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