Direct observation of photonic Fermi surfaces by plasmon tomography

Autor:	A. Krishnan, C. J. Regan, L. Grave de Peralta, Ayrton Bernussi, R. Lopez-Boada
Rok vydání:	2011
Předmět:	Brillouin zone Physics Reciprocal lattice Physics and Astronomy (miscellaneous) Condensed matter physics Surface plasmon Physics::Optics Fermi surface Surface plasmon polariton Plasmon Localized surface plasmon Photonic crystal
Zdroj:	Applied Physics Letters. 98:151113
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.3581050
Popis:	Light propagation in dielectric plasmonic crystals with different parameters and symmetries was investigated by plasmon tomography. We show that the photonic Fermi surfaces at the crystal’s reciprocal lattice space can be observed directly from the Fourier plane images. Directional gaps were observed where the isofrequency wavevectors of the propagating surface plasmon mode intersect the first Brillouin zone of the plasmonic crystal structures. We determined that the angular magnitude of the directional gaps depends strongly on the crystal symmetry and the lattice period.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c79d47e133a5a866d81d2005f7fd5a6c https://doi.org/10.1063/1.3581050 Zobrazit plný text záznamu