Generation of surface optical screw dislocations by evanescent plasmonic modes

S. Al-Awfi; M. Babiker; V. E. Lembessis; D. L. Andrews

doi:10.1109/SIECPC.2011.5877009

Generation of surface optical screw dislocations by evanescent plasmonic modes

S. Al-Awfi
, M. Babiker
, V. E. Lembessis
, D. L. Andrews

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

A novel form of optical screw dislocation based on localized surface-plasmon modes (SPMs) is described. In particular, we show that a metallic sheet in the form an infinitesimally thin film deposited on a planar dielectric substrate creates surface-plasmon modes due to evanescent Laguerre-Gaussian (LG) light. The characteristic property of such a mode is the exponential decay with distance normal to the interface in the vacuum region. This localized mode can be described as a surface optical screw dislocation possessing a desirable enhancement due to the localized surface plasmon content of the mode. Such a screw dislocation is controllable by changing the angle of internal reflection and the quantum numbers of the LG light.

Original language	English
Pages (from-to)	1-5
Number of pages	5
Journal	Electronics, Communications and Photonics Conference (SIECPC)
DOIs	https://doi.org/10.1109/SIECPC.2011.5877009
Publication status	Published - 2011

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10.1109/SIECPC.2011.5877009

Cite this

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abstract = "A novel form of optical screw dislocation based on localized surface-plasmon modes (SPMs) is described. In particular, we show that a metallic sheet in the form an infinitesimally thin film deposited on a planar dielectric substrate creates surface-plasmon modes due to evanescent Laguerre-Gaussian (LG) light. The characteristic property of such a mode is the exponential decay with distance normal to the interface in the vacuum region. This localized mode can be described as a surface optical screw dislocation possessing a desirable enhancement due to the localized surface plasmon content of the mode. Such a screw dislocation is controllable by changing the angle of internal reflection and the quantum numbers of the LG light.",

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AU - Al-Awfi, S.

AU - Babiker, M.

AU - Lembessis, V. E.

AU - Andrews, D. L.

PY - 2011

Y1 - 2011

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AB - A novel form of optical screw dislocation based on localized surface-plasmon modes (SPMs) is described. In particular, we show that a metallic sheet in the form an infinitesimally thin film deposited on a planar dielectric substrate creates surface-plasmon modes due to evanescent Laguerre-Gaussian (LG) light. The characteristic property of such a mode is the exponential decay with distance normal to the interface in the vacuum region. This localized mode can be described as a surface optical screw dislocation possessing a desirable enhancement due to the localized surface plasmon content of the mode. Such a screw dislocation is controllable by changing the angle of internal reflection and the quantum numbers of the LG light.

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