Dichroism for Orbital Angular Momentum using Stimulated Parametric Down Conversion

TL;DR

This paper presents a theoretical analysis of using stimulated parametric down conversion to generate dichroism based on the orbital angular momentum of light, revealing differential gain depending on OAM states.

Contribution

It introduces a novel theoretical approach to produce OAM-based dichroism through nonlinear interactions in parametric down conversion.

Findings

Differential gain depends on the OAM of the signal and pump fields.

Peak gain occurs at half the OAM of the pump.

The analysis provides a foundation for OAM-based optical devices.

Abstract

We theoretically analyze stimulated parametric down conversion as a means to produce dichroism based on the orbital angular momentum (OAM) of an incident signal field. The nonlinear interaction is shown to provide differential gain between signal states of differing OAM, the peak gain occurring at half the OAM of the pump field.