Abstract
A detailed numerical investigation of anomalies in lossy metallic lamellar gratings is presented in a large interval of a wavelength-to-period λ/d ratio. A substantial increase in absorption (a decrease in the total diffracted energy) is observed. If λ/d is small enough (within the homogenized limit), the absorption can reach almost 100%. When the groove width is large enough, the anomalies are connected with mode resonances inside the grooves.
© 1994 Optical Society of America
Full Article | PDF ArticleMore Like This
Nicolas Bonod, Gérard Tayeb, Daniel Maystre, Stefan Enoch, and Evgeny Popov
Opt. Express 16(20) 15431-15438 (2008)
L. Mashev and E. Popov
J. Opt. Soc. Am. A 6(10) 1561-1567 (1989)
Eugene K. Popov, Lyuben B. Mashev, and Erwin G. Loewen
Appl. Opt. 28(5) 970-975 (1989)