Displacement calibration of optical tweezers with absolute gravitational acceleration
Abstract
In recent years, levitated particles of optical traps in vacuum have shown enormous potential in precision sensor development and searching for new physics. The accuracy of the calibration relating the detected signal to absolute displacement of the trapped particle is a critical factor for absolute measurement performance. In this paper, we suggest and experimentally demonstrate a novel calibration method for optical tweezers based on free-falling particles in vacuum, where the gravitational acceleration is introduced as an absolute reference. Our work provides a calibration protocol with great certainty and traceability, which is significant in improving the accuracy of precision sensing based on optically levitated particles.
Keywords
Cite
@article{arxiv.2203.02876,
title = {Displacement calibration of optical tweezers with absolute gravitational acceleration},
author = {Jianyu Yang and Nan Li and Xunmin Zhu and Ming Chen and Xingfan Chen and Cheng Liu and Jian Zhuang and Huizhu Hu},
journal= {arXiv preprint arXiv:2203.02876},
year = {2022}
}
Comments
10 pages, 5 figures