Local Diagnostics of the Density of Neutral Atoms in Plasma by Stimulated Rotation of Polarization Plane

TL;DR

This paper presents a method to diagnose the local density of neutral atoms in plasma by analyzing the stimulated rotation of the polarization plane of a probe signal in an intense laser field.

Contribution

It introduces a theoretical approach to measure residual gas density in cesium plasma using polarization rotation effects caused by intense laser pulses.

Findings

Calculated polarization rotation angles in plasma.

Estimated residual gas density in cesium plasma.

Described complex structure of polarization rotation.

Abstract

The polarization plane stimulated rotation angle of probe signal in the intense laser field in plasma is calculated. The estimates of the residual gas local density in a cesium plasma based on the effects of Faraday, Cotton-Mouton and stimulated rotation of probe signal in the intense laser field have been found. A brief theory of resonant change in the plane of polarization of a probe signal under the action of an intense pulse is presented. It is shown, that the rotation in the medium has a complex structure.