原子自旋进动检测技术

doi:10.3969/j.issn.0255-8297.2021.05.005

摘要/Abstract

摘要： 自旋是原子的内禀特性，自旋进动对磁场作用或相对惯性空间的转动敏感，通过检测原子的自旋进动可实现磁场或惯性转动的测量，进而形成原子磁强计、原子陀螺和其他原子传感器。基于原子无自旋交换弛豫（spin-exchange relaxation free，SERF）态的原子传感技术包括原子SERF态制备和原子自旋进动检测，其中原子SERF态的制备是实现高灵敏度、低噪声和高稳定感测的前提，原子自旋进动检测则是实现原子传感器高性能测量的关键。本文首先简单描述了原子进动及检测原理，围绕高性能SERF态原子自旋陀螺和磁强计的自旋进动检测，介绍了三类典型的原子自旋进动检测技术及特点，并进行了对比分析。

关键词: 原子自旋进动, 自旋进动检测, 核磁共振陀螺, SERF原子陀螺, SERF磁强计

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

中图分类号:

TB133

陈东营, 杨远洪. 原子自旋进动检测技术[J]. 应用科学学报, 2021, 39(5): 777-792.

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

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