Title :
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
fDate :
7/1/2007 12:00:00 AM
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;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2007.899187
