Surface plasmon propagation in an elliptical corral
A. Drezet, A. L. Stepanov, H. Ditlbacher, A. Hohenau, B. Steinberger,, F. R. Aussenegg, A. Leitner, and J. R. Krenn
TL;DR
This paper demonstrates an elliptical Bragg reflector functioning as a surface plasmon interferometer, showing strong polarization-dependent focalization, validated through experiments and theoretical modeling.
Contribution
It presents the first experimental realization of an elliptical plasmonic interferometer with detailed analysis of SP propagation and polarization effects.
Findings
Strong SP focalization dependent on laser polarization
Agreement between experimental observations and theoretical model
Validation of elliptical Bragg reflector as a plasmonic interferometer
Abstract
We report the experimental realization of an elliptical Bragg reflector acting as an interferometer for propagating surface plasmon sSPd waves. We investigate SP interferometry in this device using a leakage radiation microscope and we compare our observations with a theoretical model for SP propagation. Strong SP focalization as a function of laser polarization orientation is observed and justified.
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