Abstract

An experimental investigation of spectral dependence of two recently discovered anomalies in deep metallic gratings is presented. Good coincidence with theoretical results is obtained. It is shown that the Brewster effect in deep gratings is suppressed with a decrease of wavelength, as the angle of incidence approaches zero. At the same time the groove-depth interval widens, and low values of reflectivity are observed.

© 1990 Optical Society of America

Anomalies of metallic diffraction gratings

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

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)

Lamellar metallic grating anomalies

E. Popov, L. Tsonev, and D. Maystre
Appl. Opt. 33(22) 5214-5219 (1994)

Brewster effects for deep metallic gratings

L. B. Mashev, E. Popov, and Erwin G. Loewen
Appl. Opt. 28(13) 2538-2541 (1989)

Experimental study of local and integral efficiency behavior of a concave holographic diffraction grating

E. G. Loewen, E. K. Popov, L. V. Tsonev, and J. Hoose
J. Opt. Soc. Am. A 7(9) 1764-1769 (1990)