Abstract

A micro-Gal absolute gravimeter based on high-precision and high-stability heterodyne interferometer is presented. The distance measuring technology of the gravimeter is studied in detail. The experimental results of distance measuring for a free-falling motion show that the high-precision heterodyne interferometer described in this paper can meet the demand of a micro-Gal absolute gravimeter with relative uncertainty of 6.4*10^(-9). Moreover, the heterodyne interferometer is more stable than the Mach-Zehnder interferometer (MZI) which is widely used in present absolute gravimeters.

© 2007 Chinese Optics Letters

High-Precision Laser Gravimeter

G. P. Arnautov, L. D. Gik, E. N. Kalish, V. P. Koronkevitch, I. S. Malyshev, Yu. E. Nesterikhin, Yu. F. Stus, and G. G. Tarasov
Appl. Opt. 13(2) 310-313 (1974)

High-precision gravimeter based on a nano-mechanical resonator hybrid with an electron spin

Xing-Yan Chen and Zhang-Qi Yin
Opt. Express 26(24) 31577-31588 (2018)

Realization of a compact one-seed laser system for atom interferometer-based gravimeters

Jie Fang, Jiangong Hu, Xi Chen, Haoran Zhu, Lin Zhou, Jiaqi Zhong, Jin Wang, and Mingsheng Zhan
Opt. Express 26(2) 1586-1596 (2018)

Estimation of the effective wavenumber for a collimated beam in an interferometer, case study for FG5/X absolute gravimeters

Petr Křen and Vojtech Pálinkáš
Appl. Opt. 61(7) 1811-1817 (2022)

Phase-generated-carrier-modulated laser interferometer for measurement of ground vibration on an absolute gravimeter

Zhenyu Xiong, Guo Wei, Xudong Yu, Xingwu Long, and Youguang Guo
Appl. Opt. 59(2) 285-294 (2020)