Please use this identifier to cite or link to this item: https://doi.org/10.1117/12.861151
Title: Plasmonic coaxial Fabry-Pérot nanocavity color filter
Authors: Si, G.Y.
Leong, E.S.P.
Danner, A.J. 
Teng, J.H.
Keywords: Coaxial nanocavity arrays
Color filter
Surface plasmons
Issue Date: 2010
Source: Si, G.Y., Leong, E.S.P., Danner, A.J., Teng, J.H. (2010). Plasmonic coaxial Fabry-Pérot nanocavity color filter. Proceedings of SPIE - The International Society for Optical Engineering 7757 : -. ScholarBank@NUS Repository. https://doi.org/10.1117/12.861151
Abstract: Plamonic coaxial structures have drawn considerable attetion recently because of their unique properties. They exhibit different mechanisms of extraordinary optical transmission observed from subwavelength holes and they can support localized Fabry-Pérot plasmon modes. In this work, we experimentally demonstrate color filters based on coaxial structures fabricated in optically thick metallic films. Using nanogaps with different apertures from 160 nm down to only 40 nm, we show varying color outputs when the annular aperture arrays are illuminated with a broadband light source. Effective color-filter function is demonstrated in the optical regime. Different color outputs are observed and optical spectra are measured. In such structures, it is the propagating mode playing an important role rather than the evanescent. Resonances depend strongly on ring apertures, enabling devices with tunability of output colors using simple geometry control. © 2010 SPIE.
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/71453
ISBN: 9780819482532
ISSN: 0277786X
DOI: 10.1117/12.861151
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