Generation of surface optical screw dislocations by evanescent plasmonic modes

Al-Awfi, S., Babiker, M., Lembessis, V. E. and Andrews, D. L. (2011) Generation of surface optical screw dislocations by evanescent plasmonic modes. Electronics, Communications and Photonics Conference (SIECPC). pp. 1-5.

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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.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Chemistry
UEA Research Groups:	Faculty of Science > Research Groups > Centre for Photonics and Quantum Science Faculty of Science > Research Groups > Chemistry of Light and Energy Faculty of Science > Research Groups > Physical and Analytical Chemistry (former - to 2017)
Depositing User:	Users 2731 not found.
Date Deposited:	10 Jan 2012 16:24
Last Modified:	21 Jun 2024 10:30
URI:	https://ueaeprints.uea.ac.uk/id/eprint/36069
DOI:	10.1109/SIECPC.2011.5877009

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