Role of commensurate arrangements in the optical response of metallic gratings

Autor:	Barbara, A., Perchec, J. Le, Quemerais, P., Lopez-Rios, T., Collin, S., Sauvan, C., Pelouard, J-L.
Rok vydání:	2007
Předmět:	Condensed Matter - Other Condensed Matter
Druh dokumentu:	Working Paper
Popis:	Light localization on commensurate arrangements of metallic sub-wavelength grooves is studied. We theoretically show that as the degree of commensuration tends to an irrational number new light localization states are produced. These have properties close to that reported for hot spots on disordered surfaces and are not permitted for simple period gratings. Some theoretical predictions are experimentally provided in the infra-red region by reflectivity measurements performed on two commensurate samples with respectively two and three slits per period. Comment: 5 pages, 5 figures, submitted to Phys. Rev. Lett. May 2007
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0706.3843 Zobrazit plný text záznamu View this record from Arxiv