The Effects Of Finite Beam Size Upon Wide-Angle Diffraction Phenomena

James E. Harvey

doi:10.1117/12.949612

10 May 1986 The Effects Of Finite Beam Size Upon Wide-Angle Diffraction Phenomena

James E. Harvey

Proceedings Volume 0560, Diffraction Phenomena in Optical Engineering Applications; (1986) https://doi.org/10.1117/12.949612
Event: 29th Annual Technical Symposium, 1985, San Diego, United States

Abstract

Diffraction gratings are known to exhibit anomalous behavior at certain critical wavelengths or incident angles. These traditional anomalies manifest themselves as abrupt variations in diffracted order efficiency or grating absorption while their angular position remains unchanged as predicted by the grating equation. Experimental observations were recently reported which indicated a diffraction grating anomaly in the angular position of certain diffracted orders that appeared to violate the grating equation. Several exotic physical mechanisms have been suggested as possible causes of this intriguing behavior. In this paper we attempt to show that this angular grating anomaly is the straightforward result of finite beam size upon wide-angle diffraction phenomena as described by simple scalar diffraction theory.

Citation Download Citation

James E. Harvey "The Effects Of Finite Beam Size Upon Wide-Angle Diffraction Phenomena", Proc. SPIE 0560, Diffraction Phenomena in Optical Engineering Applications, (10 May 1986); https://doi.org/10.1117/12.949612

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