Control of plasmonic wave propagating in nanocavity with tooth-shaped configuration

doi:10.1088/1674-1056/20/1/015204

Abstract Characteristics of plasmonic wave propagating in nanocavity formed by two silver films are studied numerically. The groove etched inside wall of the top film makes it possible to control the propagation when light goes through the top film along a nanoslit into the cavity. It is found that the transmission wave through the channel of groove etched side can be filtered linearly with the groove of a certain depth; while the other side is still open for this wave and its intensity can be enhanced periodically with the variable groove position in both films, which are explained well based on the interference of plasmonic waves in the system.

Keywords: plasmonic wave optical devices FDTD

Received: 24 April 2010
Revised: 06 July 2010
Accepted manuscript online:

PACS:	52.35.-g	(Waves, oscillations, and instabilities in plasmas and intense beams)
	42.79.-e	(Optical elements, devices, and systems)
	02.60.-x	(Numerical approximation and analysis)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10974025).

Cite this article:

Li Xu-Feng(李旭峰), Pan Shi(潘石), Guo Ying-Nan (郭英楠), and Wang Qiao(王乔) Control of plasmonic wave propagating in nanocavity with tooth-shaped configuration 2011 Chin. Phys. B 20 015204

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Control of plasmonic wave propagating in nanocavity with tooth-shaped configuration

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