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Proceedings Paper

Threshold and resonance effects in diffraction gratings
Author(s): Ivan Richter; Pavel Fiala
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Paper Abstract

This contribution concentrates on modeling of diffraction processes in surface-relief gratings, occurring particularly within resonant regions. First, the characterization of mechanisms and diffraction processes is briefly presented, together with the regions with typical diffraction regimes, types of volume phase synchronism and their periodicity. The resonant regions are characterized by strong energy interchange processes (since new diffraction orders stat to become propagating), the diffraction efficiency behavior within such a region is described and interpreted. Two main subregions of resonant regions are found: (1) the region with effective behavior - mound and (2) the region with resonant coupling. The conditions for the existence of the first subregion are presented and explained, and the specific situation for the first/second diffraction order, TE vs. TM polarization, and for different relief profiles is also discussed.

Paper Details

Date Published: 25 October 2000
PDF: 11 pages
Proc. SPIE 4095, Laser Beam Shaping, (25 October 2000);
Show Author Affiliations
Ivan Richter, Czech Technical Univ. of Prague (Czech Republic)
Pavel Fiala, Czech Technical Univ. of Prague (Czech Republic)

Published in SPIE Proceedings Vol. 4095:
Laser Beam Shaping
Fred M. Dickey; Scott C. Holswade, Editor(s)

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