High degree of chaos synchronization in pairs of transverse modes with parity-symmetric polarizations in a thin-slice solid-state vector laser and application to polarimetric secure self-mixing metrology

TL;DR

This paper demonstrates high-degree chaos synchronization in pairs of transverse modes with parity-symmetric polarizations in a thin-slice solid-state laser, enabling secure polarimetric self-mixing metrology and chaos-based applications.

Contribution

It introduces a novel chaos synchronization mechanism in polarization-dependent transverse modes of a solid-state laser, with potential for secure metrology and chaos-based communication.

Findings

Amplitude correlation coefficient > 0.994 indicating strong synchronization

Self-organized sender-receiver chaos synchronization demonstrated

Application to chaotic camouflaging and laser Doppler velocimetry

Abstract

A high degree of chaos synchronization among transverse mode pairs with parity-symmetric polarizations was demonstrated in a laser-diode pumped thin-slice c-cut Nd: GdVO4 laser. The amplitude correlation coefficient greater than R > 0.994 resulted from a non-reversing mirror symmetric-polarization-dependent structural change in the modal patterns, where chaotic dynamics of the whole system consisting of qualitatively different dynamics, which depend on the polarization crossing angle, resembled that of a chaotic single mode laser. A self-organized sender-receiver type of chaos synchronization of a single pair of modes among an infinite number of parity-symmetric polarizations and the associated chaotic camouflaging as well as extracting experiment of a self-mixing solid-state laser Doppler velocimetry signal were demonstrated.