原子自旋进动检测技术

doi:10.3969/j.issn.0255-8297.2021.05.005

Abstract

Abstract: Spin is the intrinsic characteristic of atoms, which is sensitive to magnetic field or inertial rotation. Magnetic field or inertial rotation can be measured by detecting the spin precession of atoms, accordingly, atomic magnetometer, atomic gyro, and other atomic sensors are formed. Atomic sensing technology based on atomic spin-exchange relaxation free (SERF) states includes the preparation of atomic SERF states and the detection of atomic spin precession. The preparation of atomic SERF states is the premise to achieve high sensitivity, low noise, and high stability sensing, and the detection of atomic spin precession is the key to achieve high-performance measurement. In this paper, the principle of atomic precession and its detection method is briefly described first. For the spin precession detection of high-performance SERF atomic spin gyroscope and magnetometer, three types of atomic spin precession detection techniques and their characteristics are introduced, compared, and analyzed.

Key words: atomic spin precession, spin precession detection, nuclear magnetic resonance gyroscope, SERF atomic gyroscope, SERF magnetometer

CLC Number:

TB133

CHEN Dongying, YANG Yuanhong. Detection Technology of Atomic Spin Precession[J]. Journal of Applied Sciences, 2021, 39(5): 777-792.

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Detection Technology of Atomic Spin Precession

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