Threshold and resonance effects in diffraction gratings

Ivan Richter; Pavel Fiala

doi:10.1117/12.405268

25 October 2000 Threshold and resonance effects in diffraction gratings

Ivan Richter, Pavel Fiala

Proceedings Volume 4095, Laser Beam Shaping; (2000) https://doi.org/10.1117/12.405268
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

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.

Citation Download Citation

Ivan Richter and Pavel Fiala "Threshold and resonance effects in diffraction gratings", Proc. SPIE 4095, Laser Beam Shaping, (25 October 2000); https://doi.org/10.1117/12.405268

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