Spin selective scattering modes in random anisotropy optical medium

TL;DR

This paper demonstrates spin-selective scattering modes in a disordered anisotropic optical medium, achieved by fine-tuning geometrical and dynamical phases, using a twisted nematic liquid crystal SLM to control light transmission.

Contribution

It introduces a novel method to realize spin-selective scattering modes in disordered media using phase tuning with a liquid crystal SLM.

Findings

Spin-selective modes observed in Fourier spectrum of transmitted light.

Effective cancellation of scattering effects for specific spin components.

Implementation using a twisted nematic liquid crystal SLM.

Abstract

Geometrical and dynamical phase have competing effects as far a scattering of light form inhomogeneous anisotropic optical medium is concerned. If fine-tuned appropriately, these effects can completely cancel each other for a chosen spin component while having an additive effect on the orthogonal components. Here, we show a manifestation of extraordinary spin selective modes in Fourier spectrum of Gaussian beam transmitted through anisotropic disordered medium. We realize the concept using a twisted nematic liquid crystal-based spatial light modulator (SLM) with random gray level distribution for incident Gaussian beam.