Title

Angular Grating Anomalies: Effects Of Finite Beam Size On Wide-Angle Diffraction Phenomena

Keywords

Diffraction gratings; Finite beam size; Grating anomaly; Grating equation

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 have been reported, indicating a diffraction grating anomaly in the angular position of certain diffracted orders that appears to violate the grating equation. Several exotic physical mechanisms have been suggested as possible causes of this intriguing behavior; however, in this paper we show that this angular grating anomaly is the straightforward result of finite beam size on wide-angle diffraction phenomena, as described by simple scalar diffraction theory. © 1992 Optical Society of America.

Publication Date

1-1-1992

Publication Title

Applied Optics

Volume

31

Issue

31

Number of Pages

6783-6788

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/AO.31.006783

Socpus ID

0043153903 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0043153903

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