A Simplified Laser System for Atom Interferometry Based on a Free-Space EOM

Bin Wu; Yingpeng Zhao; Bing Cheng; Can Zhang; Dianrong Li; Dong Zhu; Yazhou Yue; Jun Li; Kaijun Zhang; Qiang Lin; Kanxing Weng

doi:10.3390/photonics9050301

Photonics (Apr 2022)

A Simplified Laser System for Atom Interferometry Based on a Free-Space EOM

Bin Wu,
Yingpeng Zhao,
Bing Cheng,
Can Zhang,
Dianrong Li,
Dong Zhu,
Yazhou Yue,
Jun Li,
Kaijun Zhang,
Qiang Lin,
Kanxing Weng

Affiliations

Bin Wu: Zhejiang Provincial Key Laboratory of Quantum Precision Measurement, College of Science, Zhejiang University of Technology, Hangzhou 310023, China
Yingpeng Zhao: Zhejiang Provincial Key Laboratory of Quantum Precision Measurement, College of Science, Zhejiang University of Technology, Hangzhou 310023, China
Bing Cheng: Zhejiang Provincial Key Laboratory of Quantum Precision Measurement, College of Science, Zhejiang University of Technology, Hangzhou 310023, China
Can Zhang: Zhejiang Provincial Key Laboratory of Quantum Precision Measurement, College of Science, Zhejiang University of Technology, Hangzhou 310023, China
Dianrong Li: Zhejiang Provincial Key Laboratory of Quantum Precision Measurement, College of Science, Zhejiang University of Technology, Hangzhou 310023, China
Dong Zhu: Zhejiang Provincial Key Laboratory of Quantum Precision Measurement, College of Science, Zhejiang University of Technology, Hangzhou 310023, China
Yazhou Yue: AVIC Xi’an Flight Automatic Control Research Institute, Xi’an 710065, China
Jun Li: AVIC Xi’an Flight Automatic Control Research Institute, Xi’an 710065, China
Kaijun Zhang: Zhejiang Provincial Key Laboratory of Quantum Precision Measurement, College of Science, Zhejiang University of Technology, Hangzhou 310023, China
Qiang Lin: Zhejiang Provincial Key Laboratory of Quantum Precision Measurement, College of Science, Zhejiang University of Technology, Hangzhou 310023, China
Kanxing Weng: Zhejiang Provincial Key Laboratory of Quantum Precision Measurement, College of Science, Zhejiang University of Technology, Hangzhou 310023, China

DOI: https://doi.org/10.3390/photonics9050301
Journal volume & issue: Vol. 9, no. 5
p. 301

Abstract

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In this paper, a compact laser system for 87Rb atom interferometry based on only one free-space electro-optic modulator (EOM) was realized, where repumping and Raman beams were generated with a free-space EOM. In addition, this laser system does not require a laser amplifier compared to fibered EOM since fibered EOM cannot transmit high-power lasers. However, due to the narrow modulation linewidth of free-space EOM, it is impossible to obtain the frequencies of repumping and Raman beams separately, which would lead to some complicated effects. Therefore, a theoretical analysis was carried out to solve this problem, and a new frequency scheme for AI is proposed. For the experiment, the laser system of AI was built up. Moreover, the atomic interference fringes were obtained with a contrast of 20.7% (T = 60 ms) and the fitted phase resolution is approximately 1.25 mrad. The presented laser system could provide a new solution for compact AI systems in the future.

Published in Photonics

ISSN: 2304-6732 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics
Website: http://www.mdpi.com/journal/photonics

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