Cavity optomechanics in a fiber cavity: the role of stimulated Brillouin scattering

TL;DR

This paper explores how stimulated Brillouin scattering influences fiber cavity optomechanics, revealing enhanced damping and potential for ground-state cooling in hybrid systems through combined experimental, simulation, and theoretical approaches.

Contribution

It introduces a hybrid fiber cavity optomechanical system incorporating stimulated Brillouin scattering, demonstrating increased damping and unique detuning effects not seen in standard setups.

Findings

Stimulated Brillouin scattering enhances optomechanical damping.

Optimal damping occurs with blue detuning in the hybrid system.

Potential for cooling mechanical oscillators to the quantum ground state.

Abstract

We study the role of stimulated Brillouin scattering in a fiber cavity by numerical simulations and a simple theoretical model and find good agreement between experiment, simulation and theory. We also investigate an optomechanical system based on a fiber cavity in the presence on the nonlinear Brillouin scattering. Using simulation and theory, we show that this hybrid optomechanical system increases optomechanical damping for low mechanical resonance frequencies in the unresolved sideband regime. Furthermore, optimal damping occurs for blue detuning in stark contrast to standard optomechanics. We investigate whether this hybrid optomechanical system is capable cooling a mechanical oscillator to the quantum ground state.