High intensity enhancement of unidirectional propagation of a surface plasmon polariton beam in a metallic slit-groove nanostructure

Authors

1 Department of physics, Tarbiat Modares University, Tehran, P.O Box 14115-175, Iran

2 Department of physics, Tarbiat Modares University, Tehran, P.O Box 14115-175

3 Department of physics, Sharif University of Technology, Tehran, P.O Box 14588-89694, Iran

Abstract

We propose an innovative design for metallic slit-groove nanostructure to increase the propagation intensity of a unidirectional surface plasmon polariton (SPP) light beam. Our idea is based on the combination of the concept of unidirectional plasmonic wave propagation in a metallic slit-groove nanostructure and the well- known hybrid modes of a hybrid metal-dielectric waveguide. Our results demonstrate that the hybrid structure results in up to 5 times enhancement in the SPP beam intensity relative to the conventional design of slit-groove nanostructure. This new design of SPP based nano source can be applied in many applications including nano photonic devices. 

Keywords

Scientia Iranica
Volume 21, Issue 6 - Serial Number 6
Transactions on Nanotechnology (F)
December 2014
Pages 2508-2512

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