Stimulated light emission and inelastic scattering by a classical linear system of rotating particles

TL;DR

This paper demonstrates that a classical linear system of rotating particles can produce stimulated light emission and inelastic scattering, leading to light amplification and high rotation velocities with potential experimental observability.

Contribution

It reveals that classical linear rotating particles can exhibit stimulated emission and light amplification, a phenomenon typically associated with quantum systems.

Findings

Light emission shifted by twice the rotation frequency dominates.

Net amplification of incident light is achieved via stimulated emission.

High rotation velocities induce large optically-induced acceleration rates.

Abstract

The rotational dynamics of particles subject to external illumination is found to produce light amplification and inelastic scattering at high rotation velocities. Light emission at frequencies shifted with respect to the incident light by twice the rotation frequency dominates over elastic scattering within a wide range of light and rotation frequencies. Remarkably, net amplification of the incident light is produced in this classical linear system via stimulated emission. Large optically-induced acceleration rates are predicted in vacuum accompanied by moderate heating of the particle, thus supporting the possibility of observing these effects under extreme rotation conditions.