Issue 45, 2022

From cavity optomechanics to cavity-less exciton optomechanics: a review

Abstract

Cavity optomechanical coupling based on radiation pressure, photothermal forces and the photoelastic effect has been investigated widely over the past few decades, including optical measurements of mechanical vibration, dynamic backaction damping and amplification, nonlinear dynamics, quantum state transfer and so on. However, the delicate cavity operation, including cavity stabilization, fine detuning, tapered fibre access etc., limits the integration of cavity optomechanical devices. Dynamic backaction damping and amplification based on cavity-less exciton optomechanical coupling in III–V semiconductor nanomechanical systems, semiconductor nanoribbons and monolayer transition metal dichalcogenides have been demonstrated in recent years. The cavity-less exciton optomechanical systems interconnect photons, phonons and excitons in a highly integrable platform, opening up the development of integrable optomechanics. Furthermore, the highly tunable exciton resonance enables the exciton optomechanical coupling strength to be tuned. In this review, the mechanisms of cavity optomechanical coupling, the principles of exciton optomechanical coupling and the recent progress of cavity-less exciton optomechanics are reviewed. Moreover, the perspectives for exciton optomechanical devices are described.

Graphical abstract: From cavity optomechanics to cavity-less exciton optomechanics: a review

Article information

Article type
Review Article
Submitted
11 Jul. 2022
Accepted
23 Sep. 2022
First published
23 Sep. 2022

Nanoscale, 2022,14, 16710-16730

From cavity optomechanics to cavity-less exciton optomechanics: a review

H. Chang and J. Zhang, Nanoscale, 2022, 14, 16710 DOI: 10.1039/D2NR03784J

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