The Influence of Temperature on Frequency Modulation Spectroscopy in Atom Gravimeter.

Kanxing Weng, Bin Wu, Feichen Wang, Xiaohui Zhang, Yin Zhou, Bing Cheng, Qiang Lin

Abstract read

In one paragraph

Article in Sensors (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

7 authors.

Kanxing WengZhejiang Provincial Key Laboratory of Quantum Precision Measurement, Institute of Optics, College of Science, Zhejiang University of Technology, Hangzhou 310023, China.

Bin WuZhejiang Provincial Key Laboratory of Quantum Precision Measurement, Institute of Optics, College of Science, Zhejiang University of Technology, Hangzhou 310023, China.

Feichen WangZhejiang Provincial Key Laboratory of Quantum Precision Measurement, Institute of Optics, College of Science, Zhejiang University of Technology, Hangzhou 310023, China.

Xiaohui ZhangZhejiang Provincial Key Laboratory of Quantum Precision Measurement, Institute of Optics, College of Science, Zhejiang University of Technology, Hangzhou 310023, China.

Yin ZhouZhejiang Provincial Key Laboratory of Quantum Precision Measurement, Institute of Optics, College of Science, Zhejiang University of Technology, Hangzhou 310023, China.

Bing ChengZhejiang Provincial Key Laboratory of Quantum Precision Measurement, Institute of Optics, College of Science, Zhejiang University of Technology, Hangzhou 310023, China.

Qiang LinZhejiang Provincial Key Laboratory of Quantum Precision Measurement, Institute of Optics, College of Science, Zhejiang University of Technology, Hangzhou 310023, China.

Funding

National Key Research and Development Program of China 2017YFC0601602, 2016YFF0200206National Natural Science Foundation of China 61727821, 61875175, 11404286, 51905482Research funds from the Ministry of natural resources of China DD20189831

6 · The paper itself

Abstract

Atom gravimeters use locked lasers to manipulate atoms to achieve high-precision gravity measurements. Frequency modulation spectroscopy (FMS) is an accurate method of optical heterodyne spectroscopy, capable of the sensitive and rapid frequency locking of the laser. Because of the effective absorption coefficient, Doppler broadening and susceptibility depend on temperature, and the signal-to-noise ratio (SNR) of the spectroscopy could be affected by temperature. We present a detailed study of the influence of the temperature on FMS in atom gravimeters, and the experimental results show that the SNR of the spectroscopy is dependent on temperature. In this paper, the frequency of the reference laser is locked by tracking the set point of the fringe slope of FMS. The influence of the frequency-locking noise of the reference laser on the sensitivity of the atom gravimeter is investigated by changing the temperature of the Rb cell without extra operations. The method presented here could be useful for improving the sensitivity of quantum sensors that require laser spectroscopic techniques.

Indexed as

frequency lockingfrequency modulation spectroscopygravity measurementquantum sensors

Identifiers

PMID36560298

DOI10.3390/s22249935

PMCPMC9781901

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