Abstract
The band structure for an absorptive two-dimensional photonic crystal made from cylinders consisting of a Drude material is calculated. Absorption causes the spectrum to become complex and form islands in the negative complex half-plane. The boundaries of these islands are not always formed by the eigenvalues calculated for Bloch vectors on the characteristic path, and we find a hole in the spectrum. For realistic parameter values, the real part of the spectrum is hardly influenced by absorption, typically less than 0.25%. The employed method uses a Korringa–Kohn–Rostoker procedure together with analytical continuation. This results in an efficient approach that allows these band-structure calculations to be done on a Pentium III personal computer.
© 2003 Optical Society of America
Full Article | PDF ArticleMore Like This
Jakob Blad and Aasmund S. Sudbø
Opt. Express 17(9) 7170-7185 (2009)
Yoann Brûlé, Boris Gralak, and Guillaume Demésy
J. Opt. Soc. Am. B 33(4) 691-702 (2016)
S. Y. Lin, J. G. Fleming, Z. Y. Li, I. El-Kady, R. Biswas, and K. M. Ho
J. Opt. Soc. Am. B 20(7) 1538-1541 (2003)