Modular-assembled laser system for a long-baseline atom interferometer

Author:

Xu Rundong12,Wang Qi12,Yan Sitong12,Hou Zhuo12,He Chuan12,Ji Yuhang12,Li Zhixin12,Jiang Junjie12,Qiao Biyan1,Zhou Lin1,Wang Ji13,Zhan Mingsheng13

Affiliation:

1. Chinese Academy of Sciences

2. University of Chinese Academy of Sciences

3. Wuhan Institute of Quantum Technology

Abstract

The Zhaoshan long-baseline Atom Interferometer Gravitation Antenna (ZAIGA) is a new, to the best of our knowledge, type of large-scale atom interferometer facility under construction for the study of gravitation and related problems. To meet the different requirements of the laser system for the atom interferometer using various atoms (including 85 R b , 87 R b , 87 S r , and 88 S r ), we design and implement a modular assembled laser system. By dividing the laser system into different basic units according to their functions and modularizing each unit, the laser system is made highly scalable while being compact and stable. Its intensity stability is better than 0.1% in 1 0 2 s and 0.5% in 1 0 4 s . We test the performance of the laser system with two experimental systems, i.e., an 85 R b 87 R b dual-species ultracold atom source and an 85 R b atom interferometer. The 85 R b 87 R b dual-species magneto-optical trap and the 85 R b atom interference fringes are realized by using this laser system, indicating that its technical performance can meet the major experimental requirements.

Funder

National Natural Science Foundation of China

National Key Research and Development Program of China

Strategic Priority Research Program of the Chinese Academy of Sciences

Youth Innovation Promotion Association of the Chinese Academy of Sciences

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering

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