Compact single-seed, module-based laser system on a transportable high-precision atomic gravimeter
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Published:2022-12
Issue:4
Volume:4
Page:044401
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ISSN:2639-0213
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Container-title:AVS Quantum Science
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language:en
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Short-container-title:AVS Quantum Sci.
Author:
Oon F. E.1ORCID,
Dumke Rainer12
Affiliation:
1. Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, 117543 Singapore
2. Division of Physics and Applied Physics, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore
Abstract
A single-seed, module-based compact laser system is demonstrated on a transportable [Formula: see text]-based high-precision atomic gravimeter. All the required laser frequencies for the atom interferometry are provided by free-space acousto-optic modulators (AOMs) and resonant electro-optic phase modulators (EOMs). The optical phase-locked loop between the two optical paths derived from the same laser provides an easy frequency manipulation between two laser frequencies separated by the hyperfine frequency of 6.835 GHz using an AOM and an EOM, respectively. Our scheme avoids parasite Raman transitions present in the direct EOM modulation scheme (modulating directly at the frequency of the hyperfine splitting), which have detrimental effects on the accuracy of the gravity measurements. The optical phase-locked loop also provides a convenient way for vibration compensation through the Raman lasers' phase offset. Furthermore, the modular design approach allows plug-and-play nature on each individual optic module and also increases the mechanical stability of the optical systems. We demonstrate high-precision gravity measurements with 17.8 [Formula: see text] stability over 250 s averaging time and 2.5 [Formula: see text] stability over 2 h averaging time.
Funder
National Research Foundation Singapore
Quantum Engineering Program
DSO National Laboratories - Singapore
Ministry of Education of Singapore
Publisher
American Vacuum Society
Subject
Electrical and Electronic Engineering,Computational Theory and Mathematics,Physical and Theoretical Chemistry,Computer Networks and Communications,Condensed Matter Physics,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
1 articles.
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