Study of the Transmission of Subwavelength Metallic Grids in the THz Frequency Range

Autor:	D. Armand, Christophe Minot, Frédéric Garet, Yanko Todorov, Jean-Louis Coutaz
Rok vydání:	2008
Předmět:	Diffraction Materials science business.industry Terahertz radiation Surface plasmon Physics::Optics Grating Electromagnetic radiation Waveguide (optics) Atomic and Molecular Physics and Optics Wavelength Optics Optoelectronics Electrical and Electronic Engineering business Diffraction grating
Zdroj:	IEEE Journal of Selected Topics in Quantum Electronics. 14:513-520
ISSN:	1077-260X
DOI:	10.1109/jstqe.2007.910766
Popis:	We report on the transmission of terahertz (THz) electromagnetic waves through gold grids evaporated over a transparent silicon substrate. We observe a near-unity transmission in the subwavelength regime. When the THz wavelength is comparable to the grid periodicity, the grid serves as a grating coupler that allows us to excite guided modes in the device. These guided modes exhibit an intermediate behavior between a surface plasmon mode and modes of a dielectric slab waveguide.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::23537a31a34de4c8e9a70f2c4bee7330 https://doi.org/10.1109/jstqe.2007.910766 Zobrazit plný text záznamu