Probing spin-orbit interaction via Fano interference

Desapogu Rajesh; Sergey Nechayev; DIma Cheskis; Shmuel Sternklar; Yuri Gorodetski

doi:10.1063/1.5080697

Probing spin-orbit interaction via Fano interference

Desapogu Rajesh, Sergey Nechayev, DIma Cheskis, Shmuel Sternklar, Yuri Gorodetski

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Abstract

We experimentally investigate the behavior of the Fano-like plasmonic resonance lineshape in a simple plasmonic system comprising a subwavelength hole or a particle illuminated by a tightly focused Gaussian beam. We observe that for a small lateral displacement of the scatterer, the k-space distribution of the plasmonic wave exhibits a strong spin-dependent azimuthal variation. We attribute this phenomenon to the sensitive light-plasmon coupling conditions arising due to the specific phase matching requirements. This effect is qualitatively described by a Fano-like interference with a complex coupling factor.

Original language	English
Article number	261104
Journal	Applied Physics Letters
Volume	113
Issue number	26
DOIs	https://doi.org/10.1063/1.5080697
State	Published - 24 Dec 2018

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Probing spin-orbit interaction via Fano interference

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