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.

© 2007 IEEE

99% efficiency measured in the -1^st order of a resonant grating

N. Destouches, A. V. Tishchenko, J. C. Pommier, S. Reynaud, O. Parriaux, S. Tonchev, and M. Abdou Ahmed
Opt. Express 13(9) 3230-3235 (2005)

Broadly tunable laser based on novel metallic resonant leaky-mode diffraction grating

Y. Baravets, P. Dvorak, F. Todorov, J. Ctyroky, P. Peterka, and P. Honzatko
Opt. Express 28(3) 4340-4346 (2020)

Wideband leaky-mode resonance reflectors: Influence of grating profile and sublayers

Mehrdad Shokooh-Saremi and Robert Magnusson
Opt. Express 16(22) 18249-18263 (2008)

Internal mechanism of perfect-reflector-backed dielectric gratings to achieve 100% diffraction efficiency

Lifeng Li
J. Opt. Soc. Am. A 41(2) 252-260 (2024)

Wideband dielectric metamaterial reflectors: Mie scattering or leaky Bloch mode resonance?

Yeong Hwan Ko and Robert Magnusson
Optica 5(3) 289-294 (2018)