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Research PapersNo Access

LOCALIZED SURFACE PLASMON OF THIN GOLD FILM WITH PERIODIC ARRAYS OF NANOHOLES

Department of Physics, Key Laboratory of Acoustic and Photonic Materials and Devices of the Ministry of Education, Wuhan University, Wuhan 430072, China

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Department of Physics, Key Laboratory of Acoustic and Photonic Materials and Devices of the Ministry of Education, Wuhan University, Wuhan 430072, China

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Department of Physics, Key Laboratory of Acoustic and Photonic Materials and Devices of the Ministry of Education, Wuhan University, Wuhan 430072, China

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,

Department of Physics, Key Laboratory of Acoustic and Photonic Materials and Devices of the Ministry of Education, Wuhan University, Wuhan 430072, China

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Department of Physics, Key Laboratory of Acoustic and Photonic Materials and Devices of the Ministry of Education, Wuhan University, Wuhan 430072, China

Corresponding author.

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https://doi.org/10.1142/S0217984909017960Cited by:1 (Source: Crossref)

Abstract

The localized surface plasmon (LSP) resonances properties of periodic arrays of nanoholes in thin gold films are investigated by using the method of discrete dipole approximation (DDA). The surface plasmon polaritons (SPPs) play important roles in amplification or suppression of the LSP resonances in the film. The LSP-SPP coupling is affirmed based on the extinction spectra calculated by the DDA. The intensity of the LSP resonances can be controlled through changing the edge-to-edge separation distances between nanoholes, the number and the diameter of the nanoholes. The calculations also indicate that the LSP resonance peak decreases with increasing the thickness of the gold film.

Keywords:

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Vol. 23, No. 02

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Received 2 April 2008

Revised 18 April 2008

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