Exploiting long-ranged order in quasiperiodic structures for broadband plasmonic excitation

Autor:	J. Cesario, Nir Rotenberg, B. le Feber, H. Zeijlemaker, Laurens Kuipers
Rok vydání:	2011
Předmět:	Physics Physics and Astronomy (miscellaneous) business.industry Surface plasmon Physics::Optics Surface plasmon polariton Wavelength Optics Quasiperiodic function Polariton Quasiparticle Optoelectronics business Excitation Plasmon
Zdroj:	Applied Physics Letters. 98:201108
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.3592847
Popis:	A comparison of transmission spectra from periodic, quasiperiodic, and randomly spaced slit arrays in thick gold films reveals resonant plasmonic excitations that arise solely due to the long-range order of the quasiperiodic structures. Specifically, first-order plasmonic resonances at the air-gold interface of the quasiperiodic arrays are identified at a broader range of wavelengths than those observed from periodic structures with the same average slit distance. Thus, a quasiperiodic plasmonic coupler that couples both visible and near-infrared light to surface plasmon polaritons is designed and demonstrated.
Databáze:	OpenAIRE
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