High accuracy, high dynamic range optomechanical accelerometry enabled by dual comb spectroscopy

Published

September 20, 2023

Author(s)

David Long, Jasper Stroud, Benjamin Reschovsky, Yiliang Bao, Feng Zhou, Thomas W. LeBrun, David Plusquellic, Jason Gorman, Sean Bresler

Abstract

Cavity optomechanical sensors offer exceptional sensitivity but interrogating the cavity motion with high accuracy and dynamic range has proven to be challenging. Here we employ a dual optical frequency comb spectrometer to readout a cavity optomechanical accelerometer, allowing for a rapid simultaneous measurement of the cavity's displacement, finesse, and coupling at accelerations up to 24 g (236 m/s2). With this approach we have achieved a displacement sensitivity of 3 fm/Hz1/2 and a dynamic range of 3.9×105¬¬, which is the highest we are aware of for any cavity optomechanical sensor. In addition, dynamic comparisons of our optomechanical sensor with a commercial reference accelerometer show agreement at the 0.5% level, a value which is limited by the uncertainty associated with the reference. Finally, the methods described herein are not limited to accelerometry but rather can be readily applied to nearly any optomechanical sensor, where the combination of high speed, dynamic range, and sensitivity is expected to be enabling.

Citation

APL Photonics

Volume

8

Pub Type

Journals

Download Paper

https://doi.org/10.1063/5.0165582

Local Download

Keywords

Optomechanics, Comb Spectroscopy, Metrology, Accelerometry

Citation

Long, D. , Stroud, J. , Reschovsky, B. , Bao, Y. , Zhou, F. , LeBrun, T. , Plusquellic, D. , Gorman, J. and Bresler, S. (2023), High accuracy, high dynamic range optomechanical accelerometry enabled by dual comb spectroscopy, APL Photonics, [online], https://doi.org/10.1063/5.0165582, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=956206 (Accessed April 7, 2025)