Random Lasing in an Inhomogeneous and Disordered System of Cold Atoms

TL;DR

This paper investigates random lasing phenomena in cold atomic gases, demonstrating how inhomogeneous distributions can lead to instability and lasing signatures through Monte-Carlo simulations.

Contribution

It introduces a novel analysis of random lasing in cold atomic gases considering inhomogeneous distributions and dual scattering-gain roles.

Findings

Identification of instability points in inhomogeneous atomic gases

Observation of random lasing signatures via simulations

Highlighting the dual role of atoms as scatterers and gain medium

Abstract

We consider light trapping in an amplifying medium consisting of cold alkali-metal atoms; the atomic gas plays a dual role as a scattering and as a gain medium. We perform Monte-Carlo simulations for the combined processes. In some configurations of the inhomogeneous distribution this leads to a point of instability behavior and a signature of random lasing in a cold atomic gas.