The Leaky Mode Resonance Condition Ensures 100% Diffraction Efficiency of Mirror-Based Resonant Gratings

Author

Flury, Manuel ; Tishchenko, Alexandre V. ; Parriaux, Olivier

Author_Institution

CNRS UMR, Saint-Etienne

Volume

25

Issue

7

fYear

2007

fDate

7/1/2007 12:00:00 AM

Firstpage

1870

Lastpage

1878

Abstract

The resonance condition of a leaky mode propagating in a dielectric multilayer, which is supported by a mirror and excited by a free-space wave from the cover medium, is simply derived from the phase of the reflection at the mirror and cover interfaces. The leaky mode resonance is used to obtain 100% first-order diffraction efficiency in a reflection resonant grating by destructive interference in the direction of Fresnel reflection. A number of examples support the validity of this condition for high efficiency and illustrate the usefulness of this intelligible representation of the diffraction phenomena for the synthesis of novel diffractive elements.

Keywords

Fresnel diffraction; dielectric materials; diffraction gratings; light interference; light reflection; mirrors; optical multilayers; 1st order diffraction efficiency; Fresnel reflection; destructive interference; dielectric multilayer; diffractive elements; free space wave; leaky mode resonance; mirror-based resonant gratings; reflection resonant grating; Dielectrics; Diffraction gratings; Fresnel reflection; Mirrors; Nonhomogeneous media; Optical propagation; Optical reflection; Refractive index; Resonance; Slabs; Gratings; leaky waves; nonhomogeneous media; resonance; waveguide;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2007.899187

Filename

4267803