Open AccessRealization of a compact one-seed laser system for atom interferometer-based gravimeters
Author(s) -
Jie Fang,
Jiangong Hu,
Xi Chen,
Huajian Zhu,
Lin Zhou,
Jiaqi Zhong,
Jin Wang,
Min Zhan
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.001586
Subject(s) - gravimeter , optics , laser , atom interferometer , astronomical interferometer , interferometry , physics , distributed feedback laser , laser cooling , semiconductor laser theory , allan variance , materials science , statistics , mathematics , standard deviation
A simple and compact design of the laser system is important for realization of compact atom interferometers (AIs). We design and realize a simple fiber bench-based 780-nm laser system used for 85 Rb AI-based gravimeters. The laser system contains only one 780 nm seed laser, and the traditional frequency-doubling-module is not used. The Raman beams are shared with one pair of the cooling beams by using a liquid crystal variable retarder based polarization control technique. This laser system is applied to a compact AI-based gravimeter, and a best gravity measurement sensitivity of 230 μGal/Hz 1/2 is achieved. The gravity measurements for more than one day are also performed, and the long-term stability of the gravimeter is 5.5 μGal.