Polarometric Method of Plasma Diagnostics

TL;DR

This paper presents a polarimetric technique for plasma diagnostics by analyzing the polarization rotation of a probe laser, enabling estimation of plasma density and magnetic field strength through Faraday and Cotton-Mouton effects.

Contribution

It introduces a novel polarimetric method to measure plasma parameters by analyzing polarization rotation influenced by magnetic fields and resonance detuning.

Findings

Estimated residual gas density and magnetic field strength in cesium plasma.

Polarization rotation depends on laser detuning, magnetic field, and atomic transition properties.

Method provides a non-invasive way to diagnose plasma characteristics.

Abstract

The polarization plane rotation angle of probe signal in plasma is calculated. The estimates of the residual gas average density and the average magnitude of the magnetic field in a cesium plasma based on the effects of Faraday and Cotton-Mouton in probe laser field has been found. It is shown, that polarization plane rotation angle depends on resonance detuning of incident laser wave and transition frequency of medium atoms, magnetic field strength, and matrix element.