Numerical optimization of a grating coupler for the efficient excitation of surface plasmons at an Ag-SiO2 interface

Details Numerical optimization of a grating coupler for the efficient excitation of surface plasmons at an Ag-SiO2 interface Numerical optimization of a grating coupler for the efficient excitation of surface plasmons at an Ag-SiO2 interface

2007-03-04

arxiv.org/abs/physics/0703036v1

Physics

Optics

5 figures

Scientific paper

10.1364/JOSAB.24.002268

The efficient generation of surface plasmons from free space optical waves is
still an open problem in the field. Here we present a methodology and optimized
design for a grating coupler. The photo-excitation of surface plasmons at an
Ag-SiO2 interface is numerically demonstrated to yield greater than 50%
coupling from a Gaussian beam into surface plasmon voltages and currents.

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