Soliton Frequency Combs in Elastomer Membrane-Cavity Optomechanics

TL;DR

This paper introduces a novel elastomer membrane-cavity optomechanics method to generate stable soliton frequency combs using a simple setup with a single laser and acoustic excitation, advancing nonlinear wave control.

Contribution

The study presents the first implementation of soliton frequency combs in elastomer membrane-cavity optomechanics, demonstrating a simplified and efficient approach for nonlinear wave manipulation.

Findings

Numerical simulations and experiments confirm stable soliton formation.

Matching acoustic frequency to the resonator enhances soliton stability and spacing.

The method enables efficient generation of Kerr-like optical frequency combs.

Abstract

Solitons, arising from nonlinear wave-matter interactions, stand out for their intrinsic stability during wave propagation and exceptional spectral characteristics. Their applications span diverse physical systems, including telecommunications, atomic clocks, and precise measurements. In recent years, significant strides have been made in developing cavity-optomechanics based approaches to generate optical frequency combs (FCs). In this study, we present an innovative approach, never explored before, that leverages elastomer membrane (EM)-cavity optomechanics to achieve the generation of soliton FCs, a highly sought-after phenomenon in the realm of nonlinear wave-matter interactions. Our method represents a significant breakthrough due to its streamlined simplicity, relying on a single continuous-wave (CW) laser pump and an externally applied acoustic wave exciting an EM-cavity, which gives rise to phonons, quantized vibrational energy states intrinsic to the elastomer's crystalline lattice structure. The mechanical resonator and electromagnetic cavity resonance are parametrically coupled within the microwave frequency range, collectively orchestrate the process of soliton FCs formation with remarkable efficiency. Numerical simulations and experimental observations demonstrate the emergence of multiple stable localized opto-mechanical wave packets, characterized by a narrow pulses time-domain response. Crucially, by setting the acoustic wave frequency to match the natural frequency of the EM resonator, the solitons' teeth are precisely spaced, and the EM's motion is significantly amplified, giving rise to a Kerr medium. The successful realization of optomechanical stable solitons represents a monumental advancement with transformative potential across various fields, including quantum computing and spectroscopy.