Femtosecond Light Transmission and Subradiant Damping in Plasmonic Crystals

Autor:	Christoph Lienau, Dai-Sik Kim, Claus Ropers, Günter Steinmeyer, Jong-Ahn Kim, G. Stibenz, Doo Jae Park
Rok vydání:	2005
Předmět:	Physics Condensed matter physics Band gap Physics::Optics General Physics and Astronomy Resonance Molecular physics Surface plasmon polariton Coupling (physics) Femtosecond Physics::Atomic and Molecular Clusters Surface plasmon resonance Plasmon Photonic crystal
Zdroj:	Physical Review Letters. 94
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.94.113901
Popis:	We report the first observation of subradiance in plasmonic nanocrystals. Amplitude- and phase-resolved ultrafast transmission experiments directly reveal the coherent coupling between surface plasmon polaritons (SPPs) induced by periodic variations in the dielectric function. This interaction results in the formation of plasmonic band gaps and coupled SPP eigenmodes with different symmetries, as directly shown by near-field imaging. In antisymmetric modes, radiative SPP damping is strongly suppressed, increasing the SPP lifetime from 30 fs to more than 200 fs. The findings are analyzed within a coupled resonance model.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7dc4f74d71844c95a5e7d43beeee7742 https://doi.org/10.1103/physrevlett.94.113901 Zobrazit plný text záznamu