Cooperative atomic scattering of light from a laser with a colored noise spectrum

TL;DR

This paper investigates how colored noise in a partially coherent pump influences collective atomic recoil lasing, revealing that noise correlations can significantly enhance or suppress light scattering growth rates.

Contribution

It introduces the impact of colored noise correlations on atomic recoil lasing, extending understanding beyond white noise effects.

Findings

Colored noise can greatly alter growth rates of atomic recoil lasing.

Noise correlation time and intensity significantly affect cooperative scattering.

Results are supported by simulations and linear analysis.

Abstract

The collective atomic recoil lasing is studied for an ultra-cold and collisionless atomic gas in a partially coherent pump with a colored noise. Compared to white noise, correlations in colored noise are found to be able to greatly enhance or suppress the growth rate, above or below a critical detuning. Effects on cooperative scattering of light for noise correlation time, noise intensity and pump-probe detuning are discussed. This result is consistent with our simulation and linear analysis about the evolution equations in the regions of instability.