Cogwheels for generation of surface plasmon polariton vortex
Tobing, Landobasa Yosef Mario
Zhang, Dao Hua
Date of Issue2015-12
School of Electrical and Electronic Engineering
We propose a cogwheel structure formed by an air ring and equally distributed air cogs along the ring on a gold film for generation of surface plasmon polariton vortex. We show that a well-designed cogwheel can generate an optical vortex-like response and that the characteristics of such SPP vortex are directly related to cogwheel geometries and can be controlled by adjusting the polarisation direction of incident light.
cogwheels; surface plasmon polariton; SPP vortex; whispering gallery modes; WGMs; circular polarisation; air ring; air cogs; gold film; cogwheel design; optical vortex; cogwheel geometries; polarisation direction
International Journal of Nanotechnology
© 2015 Inderscience Enterprises Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by International Journal of Nanotechnology, Inderscience Enterprises Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1504/IJNT.2015.071802].