Dynamic characterization of beating sinusoidal wave oscillations in a thin-slice solid-state laser with coupled orthogonally polarized transverse modes

TL;DR

This paper investigates the dynamic behavior of sinusoidal wave oscillations in a dual-polarization solid-state laser, revealing polarization-dependent symmetry-breaking, a singular mode-locked state, and chaos synchronization phenomena.

Contribution

It provides a detailed dynamic characterization of beating sinusoidal wave oscillations, highlighting polarization effects and the existence of a singular mode-locked state in a thin-slice laser.

Findings

Polarization-dependent symmetry-breaking observed.

A singular mode-locked state with reciprocal intensity flow identified.

Self-organized chaos synchronization demonstrated.

Abstract

Dynamic characterization of self-induced beating sinusoidal wave (BSW) oscillations and related phenomena, which were previously explored in a thin-slice dual-polarization solid-state laser operating in the regime of incomplete mode-locking of orthogonally polarized transverse eigenmodes, namely, a quasi-locked state [Laser Physics Letters, 15 (2018) 075001], is performed in terms of the amplitude correlation coefficient and intensity circulation among various orthogonally polarized mode pairs. Polarization-dependent symmetry-breaking featuring a nonreciprocal intensity flow for different orthogonally polarized mode pairs operating in the BSW state are found. The singular state is hidden in a nonlinear system where a perfect mode-locked BSW state with a large amplitude correlation coefficient featuring reciprocal intensity flow is established for a transverse mode pair possessing particular polarization directions that are related to the intensity ratio of orthogonally polarized transverse eigenmodes. Self-organized chaos synchronization is shown to take place for such a singular transverse mode pair subjected to self-mixing modulations.