We present a novel optomechanical inertial sensor for low frequency applications and corresponding acceleration measurements. This sensor has a resonant frequency of 4.7Hz, a mechanical quality factor of 476k, a test mass of 2.6 gram, and a projected noise floor of approximately 5E-11 m s-2. per root-Hz at 1Hz. Such performance, together with its small size, low weight, reduced power consumption, and low susceptibility to environmental variables such as magnetic field or drag conditions makes it an attractive technology for future geodesy missions. In this paper, we present an experimental demonstration of low-frequency ground seismic noise detection by direct comparison with a commercial seismometer, anda data analysis algorithms for the identification, characterization, and correction of several noise sources.
@article{arxiv.2209.03273,
title = {Optomechanical accelerometers for geodesy},
author = {Adam Hines and Andrea Nelson and Yanqi Zhang and Guillermo Valdes and Jose Sanjuan and Jeremiah Stoddart and Felipe Guzman},
journal= {arXiv preprint arXiv:2209.03273},
year = {2022}
}