Synthesis of optical spring potentials in optomechanical systems

TL;DR

This paper introduces a method to engineer the optical potential in cavity optomechanical systems by shaping the input light spectrum, enabling tailored force functions to enhance sensing and measurement precision.

Contribution

The authors present a novel spectral engineering technique to synthesize desired optical potentials in optomechanical systems, expanding control over mechanical elements.

Findings

The method accurately approximates target force functions within cavity linewidth limits.

Application to gravity measurement improves sensitivity.

Technique is broadly applicable to sensing and metrology in optomechanics.

Abstract

We propose a method to tailor the potential experienced by a moveable end mirror in a cavity optomechanical system by specifying the spectral properties of the input field. We show that by engineering the power spectral density of the cavity input field a desired force function can be approximated, with the accuracy of the approximation limited only by the linewidth of the cavity. The very general technique presented here could have applications in many kinds of optomechanical systems, particularly those used for sensing and metrology. We demonstrate the method by applying it to improve the sensitivity of a particular gravity measurement.