Optical wavelength conversion via optomechanical coupling in a silica resonator

TL;DR

This paper demonstrates a novel method for converting optical wavelengths using optomechanical coupling in a silica resonator, enabling efficient and phase-matching-free wavelength conversion.

Contribution

It introduces an experimental approach for optical wavelength conversion via optomechanical coupling, differing from traditional nonlinear methods by emphasizing impedance matching and optical coupling.

Findings

Successful experimental wavelength conversion in silica resonator

Optomechanical impedance matching enhances conversion efficiency

Phase-matching is not required for this conversion process

Abstract

We report the experimental demonstration of converting coherent optical fields between two different optical wavelengths by coupling two optical modes to a mechanical breathing mode in a silica resonator. The experiment is based on an itinerant approach, in which state-mapping from optical to mechanical and from mechanical to another optical state takes place simultaneously. In contrast to conventional nonlinear optical processes, optomechanical impedance matching as well as efficient optical input-output coupling, instead of phase-matching, plays a crucial role in optomechanics-based wavelength conversion.