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Applied Optics

Applied Optics


  • Vol. 42, Iss. 34 — Dec. 1, 2003
  • pp: 6804–6810

Simulation of light propagation by local spherical interface approximation

Hanna Lajunen, Jani Tervo, Jari Turunen, Tuomas Vallius, and Frank Wyrowski  »View Author Affiliations

Applied Optics, Vol. 42, Issue 34, pp. 6804-6810 (2003)

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A new local elementary interface approximation is introduced for the modeling of wave propagation through interfaces between homogeneous media. The incident wave and the surface profile are approximated locally by a spherical wave and a spherical surface, respectively. The wave field travels through the modulated structure according to the laws of geometrical optics, being refracted by the surface and propagating to the output plane locally as a geometric spherical wave. Diffraction theory is applied to propagate the field from the output plane onwards. We provide comparisons of the method with the thin-element approximation, the local plane-wave and interface approach, and rigorous diffraction theory using a sinusoidal surface-relief grating as an example. We illustrate the power of the new method by applying it to the analysis of a diffractive beam splitter.

© 2003 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(050.1970) Diffraction and gratings : Diffractive optics
(120.5710) Instrumentation, measurement, and metrology : Refraction
(350.3950) Other areas of optics : Micro-optics
(350.4600) Other areas of optics : Optical engineering

Original Manuscript: May 18, 2003
Revised Manuscript: August 28, 2003
Published: December 1, 2003

Hanna Lajunen, Jani Tervo, Jari Turunen, Tuomas Vallius, and Frank Wyrowski, "Simulation of light propagation by local spherical interface approximation," Appl. Opt. 42, 6804-6810 (2003)

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