Abstract

A bare metallic grating illuminated by a plane, S-polarized electromagnetic wave can completely absorb one of the diffracted orders. These strong absorptions have been reported to be accompanied by two different types of behavior. Here we calculate, by means of an exact differential method, the phase versus angle-of-incidence curves for cycloidal metallic gratings with different groove-depth-to-period ratios. We show that an algorithm based on the electromagnetic theory of gratings can account for the experimentally observed behavior in the vicinity of a resonant anomaly. We also show that this type of study provides additional information about the position of the zeros of the scattering matrix in the complex plane.

© 1987 Optical Society of America

Total absorption of light by gratings in grazing incidence: a connection in the complex plane with other types of anomaly

Eugene K. Popov, Lyuben B. Mashev, and Erwin G. Loewen
Appl. Opt. 28(5) 970-975 (1989)

Total absorption of light by lamellar metallic gratings

Nicolas Bonod, Gérard Tayeb, Daniel Maystre, Stefan Enoch, and Evgeny Popov
Opt. Express 16(20) 15431-15438 (2008)

Total absorption of light by a sinusoidal grating near grazing incidence

Lyuben B. Mashev, Eugene K. Popov, and Erwin G. Loewen
Appl. Opt. 27(1) 152-154 (1988)

Spectral behavior of anomalies in deep metallic gratings

E. Popov, L. Tsonev, E. Loewen, and E. Alipieva
J. Opt. Soc. Am. A 7(9) 1730-1735 (1990)

Anomalies of metallic diffraction gratings

L. Mashev and E. Popov
J. Opt. Soc. Am. A 6(10) 1561-1567 (1989)