Dynamics of an optomechanical resonator containing a Quantum Well induced by periodic modulation of cavity field and external laser beam

TL;DR

This paper investigates the dynamics of an optomechanical cavity with a quantum well under periodic modulation, revealing how modulation strength influences photon and fluorescence behaviors and enabling phonon amplification.

Contribution

It introduces a detailed analysis of a quantum well in an optomechanical cavity with time-dependent modulation, highlighting the effects of two-photon processes and external laser modulation on system dynamics.

Findings

Two-photon processes dominate under strong modulation.

Fluorescence intensity is affected by modulation strength.

External laser modulation can induce phonon amplification.

Abstract

We study in detail the dynamics of a non-stationary system composed of a Quantum Well confined in an optomechanical cavity. This system is investigated with classical and quantized motion of the cavity movable mirror. In both the cases, the cavity frequency is rapidly modulated in time. The resultant periodically modulated spectra is presented. In particular, we study the effect of two-photon process on the number of intracavity photons. The intensity of fluorescent light emitted by excitons in the quantum well is also examined for these non-stationary systems. It is observed that the initial stage of fluorescence spectrum helps in detecting the two-photon process. It is also noticed that under strong modulation, two-photon process dominates while under weak modulation, fluorescence dominates. We also analyzed the dynamics of the system induced by a periodic modulation of the external pump laser with constant cavity frequency. This modulation of external laser pump helps in phonon amplification.