Spin orbit interaction of light mediated by scattering from plasmonic nano-structures

TL;DR

This paper investigates how spin-orbit interactions of light are influenced by scattering from plasmonic nanoparticles, revealing controllable enhancement of effects through mode interference using polarimetry analysis.

Contribution

It provides a detailed theoretical analysis of SOI effects mediated by plasmonic nanostructures using Jones and Mueller polarimetry formalism, highlighting controllable enhancement mechanisms.

Findings

SOI effects can be enhanced via mode interference in nanostructures

Mueller matrix analysis reveals polarization characteristics of SOI

Controllable manipulation of light's spin-orbit interactions demonstrated

Abstract

The spin orbit interactions (SOI) of light mediated by single scattering from plasmon resonant metal nanoparticles (nanorods and nanospheres) are investigated using explicit theory based on Jones and Stokes-Mueller polarimetry formalism. The individual SOI effects are analyzed and interpreted via the Mueller matrix-derived, polarimetry characteristics, namely, diattenuation d and retardance {\delta}. The results demonstrate that each of the contributing SOI effects can be controllably enhanced by exploiting the interference of two neighboring modes in plasmonic nanostructures (orthogonal electric dipolar modes in rods or electric dipolar and quadrupolar modes in spheres).