Plasmonic Infrared Bandstop Reflective Filter

Various types of free-space plasmonic bandstop filters are reviewed. The plasmonic multilayer structure shows multiple localized surface plasmon (LSP) resonance modes with extraordinary high angle tolerance. Through modifying the plasmonic multilayer structure to a plasmonic T-shaped array, the mult...

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Bibliographic Details
Published in:IEEE journal of selected topics in quantum electronics 2013-05, Vol.19 (3), p.4601005-4601005
Main Authors: Wang, Chih-Ming, Tsai, Din Ping
Format: Article
Language:English
Subjects:
Annealing
Arrays
Bandstop filters
Dipping
Filtering
Gold
Gratings
Multilayers
Nanostructure
Nonhomogeneous media
Optical filter
Optical surface waves
Plasmonics
Plasmons
porous Au film
Sidebands
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Description
Summary:Various types of free-space plasmonic bandstop filters are reviewed. The plasmonic multilayer structure shows multiple localized surface plasmon (LSP) resonance modes with extraordinary high angle tolerance. Through modifying the plasmonic multilayer structure to a plasmonic T-shaped array, the multiple LSP modes can be suppressed. The filtering properties present a single resonance dip with a low sideband. Through modifying the plasmonic T-shaped array to be an asymmetric one, dual resonance modes can be easily designed. Finally, a nanoporous Au film is proposed to act as a bandstop filter. The fabrication processes are simple and the resonance dip can be manipulated by altering the annealing temperature.
ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2012.2228256