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arXiv · 1901.00681

Field Correlations in Surface Plasmon Speckle

Matthew R. Foreman
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Abstract

In this work fluctuations in the electric field of surface plasmon polaritons undergoing random scattering on a rough metallic surface are considered. A rigorous closed form analytic expression is derived describing second order correlations in the resulting plasmon speckle pattern assuming statistically stationary and isotropic roughness. Partially coherent planar Schell-model source fields can also be described within the developed framework. Behaviour of the three-dimensional degree of cross polarisation and spectral degree of coherence is also discussed. Expressions derived take full account of dissipation in the metal with non-universal behaviour exhibited within the correlation length of the surface and source fields.

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Matthew R. Foreman. 2019-01-03. Field Correlations in Surface Plasmon Speckle. https://doi.org/10.1038/s41598-019-44780-5

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