Direct mapping of surface plasmon dispersion using imaging scatterometry
Constant, TJ; Hibbins, AP; Lethbridge, AJ; et al.Sambles, JR; Stone, EK; Vukusic, P
Date: 25 June 2013
Journal
Applied Physics Letters
Publisher
American Institute of Physics
Publisher DOI
Abstract
The iso-frequency contours of diffracted surface plasmons on metallic bigratings have been directly recorded using imaging scatterometry. Metallic rectangular bigratings, formed of two “crossed” surface relief gratings, are used to demonstrate this measurement technique. By deepening one of the constituent gratings, control of the ...
The iso-frequency contours of diffracted surface plasmons on metallic bigratings have been directly recorded using imaging scatterometry. Metallic rectangular bigratings, formed of two “crossed” surface relief gratings, are used to demonstrate this measurement technique. By deepening one of the constituent gratings, control of the surface plasmon dispersion anisotropy is shown in the recorded iso-frequency maps. Collating the iso-frequency contours over a range of wavelengths from 500 nm to 700 nm leads to a three-dimensional map of the surface plasmon dispersion.
Physics and Astronomy
Faculty of Environment, Science and Economy
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