Formation and stability of vortex solitons in nematic liquid crystals
Pawel S. Jung, Yana V. Izdebskaya, Vladlen G. Shvedov, Demetrios N., Christodoulides, and Wieslaw Krolikowski
TL;DR
This paper investigates the formation and stability of vortex solitons in nematic liquid crystals, highlighting how birefringence affects their stability and demonstrating conditions for their stable propagation.
Contribution
It provides a theoretical analysis of vortex soliton stability in nematic liquid crystals considering birefringence effects, aligning with recent experimental findings.
Findings
Birefringence-induced astigmatism can destabilize vortex solitons.
Vortex solitons remain stable under low to moderate birefringence.
Stable propagation distances are achievable in practical settings.
Abstract
We study the propagation dynamics of bright optical vortex solitons in nematic liquid crystals with a nonlocal reorientational nonlinear response. We investigate the role of optical birefringence on the stability of these solitons. In agreement with recent experimental observations, we show that birefringence-induced astigmatism can eventually destabilize these vortex solitons. However, for low and moderate birefringence, vortex solitons can propagate stably over experimentally relevant distances.
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