Dependence of the evolution of the cavity radiation of a coherently pumped correlated emission laser on dephasing and phase fluctuation

TL;DR

This paper investigates how phase fluctuation and dephasing influence the evolution of cavity radiation in a coherently pumped correlated emission laser, revealing their complex effects on squeezing and intensity over time.

Contribution

It provides a detailed analysis of the impact of phase fluctuation and dephasing on the dynamics of two-mode squeezing and intensity in a correlated emission laser.

Findings

Two-mode squeezing and intensity increase initially then decrease over time.

Phase fluctuation and dephasing enhance squeezing in strong driving but reduce it in weak driving.

Maximum squeezing duration is affected by phase fluctuation and dephasing.

Abstract

Analysis of the dynamics of the cavity radiation of a coherently pumped correlated emission laser is presented. The phase fluctuation and dephasing are found to affect the time evolution of the two-mode squeezing and intensity of the cavity radiation significantly. The intensity and degree of the two-mode squeezing increase at early stages of the process with time, but this trend changes rapidly afterwards. It is also shown that they increase with phase fluctuation and dephasing in the strong driving limit, however the situation appears to be opposite in the weak driving limit. This essentially suggests that the phase fluctuation and dephasing weaken the coherence induced by a strong driving mechanism so that the spontaneous emission gets a chance. The other important aspect of the phase fluctuation, in this regard, is the relaxation of the time at which the maximum squeezing is manifested as well as the time in which the radiation remains in a squeezed state.