Super-mode spatial optical solitons in liquid crystals with competing nonlinearities

TL;DR

This paper investigates the formation and stability of super-mode spatial optical solitons in nematic liquid crystals with competing nonlinearities, revealing conditions for their creation, stability, and transition behaviors.

Contribution

It introduces the concept of super-mode solitons in liquid crystals with competing nonlinearities and demonstrates their stability and transition dynamics through numerical simulations.

Findings

Two-peak fundamental solitons form at high power levels.

These solitons are stable during propagation.

They can transition to single-peak states under absorption.

Abstract

We study numerically formation of spatial optical solitons in nematic liquid crystals with competing nonlocal nonlinearities. We demonstrate that at the sufficiently high input power the interplay between focusing and thermally induced defocusing may lead to the formation of two-peak fundamental spatial solitons. These solitons have constant spatial phase and hence represent supermodes of the self-induced extended waveguide structure. We show that these two-peak solitons are stable in propagation and exhibit adiabatic transition to a single peak state under weak absorption.