Beam combining using Orientational Stimulated Scattering in Liquid Crystals

TL;DR

This paper explores beam combining and cleaning in nematic liquid crystals via orientational stimulated scattering, demonstrating high efficiency and robustness against distortions through numerical analysis of the process dynamics.

Contribution

It introduces a numerical study of beam combining using orientational stimulated scattering in liquid crystals, highlighting the effects of back-conversion and stability issues.

Findings

High conversion efficiency achievable

Output wave-front robust to input distortions

Back-conversion limits interaction strength

Abstract

Possibility of beam combining and clean-up using Orientational Stimulated Scattering in a Nematic Liquid Crystal is considered. We numerically study the dynamics of the process and find that back-conversion process tends to limit the effective interaction strength. Instability of the steady state of cross-phase modulation is demonstrated, when both waves have the same frequency. We show that high conversion efficiency can be achieved, and that the shape and wave-front of the amplified output signal are robust with respect to amplitude and phase distortions of the input pump.