Calibration of atomic trajectories in a large-area dual-atom-interferometer gyroscope

被引：35

作者：

Yao, Zhan-Wei ^{[1
,2
]}

Lu, Si-Bin ^{[1
,3
]}

Li, Run-Bing ^{[1
,2
]}

Luo, Jun ^{[1
,2
]}

Wang, Jin ^{[1
,2
]}

Zhan, Ming-Sheng ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China

[2] Chinese Acad Sci, Ctr Cold Atom Phys, Wuhan 430071, Hubei, Peoples R China

[3] Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China

来源：

PHYSICAL REVIEW A | 2018年 / 97卷 / 01期

基金：

中国国家自然科学基金;

关键词：

MATTER-WAVE INTERFEROMETRY; ROTATION; TECHNOLOGY; SYSTEM; NOISE;

D O I：

10.1103/PhysRevA.97.013620

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose and demonstrate a method for calibrating atomic trajectories in a large-area dual-atominterferometer gyroscope. The atom trajectories are monitored by modulating and delaying the Raman transition, and they are precisely calibrated by controlling the laser orientation and the bias magnetic field. To improve the immunity to the gravity effect and the common phase noise, the symmetry and the overlap of two large-area atomic interference loops are optimized by calibrating the atomic trajectories and by aligning the Raman-laser orientations. The dual-atom-interferometer gyroscope is applied in the measurement of the Earth's rotation. The sensitivity is 1.2 x 10(-6) rad s(-1) Hz(-1/2), and the long-term stability is 6.2 x 10(-8) rad/ s at 2000 s.

引用

页数：6

共 26 条

[1] Inertial Sensor Technology Trends [J].