光泵磁力仪中磁共振光学检测方法研究

J4 ›› 2011, Vol. 29 ›› Issue (03): 252-.

光泵磁力仪中磁共振光学检测方法研究

张振宇^a,b,程德福^a,b,王君^a,周志坚^a,b,连明昌^a,b

吉林大学 a.地球信息探测仪器教育部重点实验室;b.吉林大学-美国德州仪器DSP联合实验室,长春 130026

出版日期:2011-05-20 发布日期:2011-06-27
通讯作者: 张振宇(1985— ),男，吉林白山人，吉林大学博士研究生,主要从事光学磁法仪器的理论研究,（Tel)86-13843127366 E-mail:zhangzhenyu_jlu@163.com
作者简介:张振宇(1985— ),男|吉林白山人|吉林大学博士研究生,主要从事光学磁法仪器的理论研究,（Tel)86-13843127366（E-mail）zhangzhenyu_jlu@163.com；程德福（1959— ）|男|辽宁朝阳人|吉林大学教授|博士生导师|主要从事物探仪器、弱信号检测研究,(Tel)86-431-85151750 (E-mail)chengdefu@jlu.edu.cn。
基金资助:
国家“863”计划“十一五”重大基金资助项目 (2006AA06A201)

Research of Magnetic Resonance^,s Optical Detection Method in Optically Pumped Magnetometer

ZHANG Zhen-yu ^a,b, CHENG De-fu^a,b, WＡＮＧ Jun^a,ZHOU Zhi-jian^a,b, LIAN Ming-chang^a,b

a.Key Laboratory for Geophysical Instrumentation of Ministry of Education;b. Texas Instrument-Jilin University DSPs Laboratory,Jilin University, Changchun 130026, China

Online:2011-05-20 Published:2011-06-27

摘要/Abstract

摘要：

在光泵磁力仪中,直接检测塞曼能级跃迁时的信噪比非常低,而采用磁共振光学检测技术,可把对微波量子的检测变换到对能量较微波量子大数万倍的光子的检测上,可大幅度得提高检测信号的信噪比。为此，针对光泵磁力仪中磁共振的光学检测方法进行了研究,论述了吸收室透明度检测法、正交光束检测法、自旋交换碰撞法和调制泵浦光法的基本原理及实验装置,分析对比了这些方法的测量特点,给出其适用对象及实现的难易程度,为光泵磁力仪的设计提供了依据。

关键词: 光泵磁力仪, 透明度, 正交光束, 自旋交换碰撞, 调制泵浦光

Abstract:

In the optically pumped magnetometer, the signal to noise ratio is very low when use the method of detecting Zeeman energy level transition directly. However, the detected signal to noise ratio can be greatly improved by using the technique of magnetic resonances optical detection which can transform the microwave quantum detection to the photon detection, because the energy of photon is much greater than that of microwave quantum.The method of magnetic resonances optical detection in the OPM(Optically Pumped Magnetometer) has been studied, the principles and experimental devices are discussed which includes the method of detection of cells transparency, detection of orthogonal beams, spin exchange collision and the method of pump beam modulation. The characteristics of these methods are analyzed and compared, the application and complexity are considered, and all these will provide the basis for the design of the optically pumped magnetometer.

Key words: optically pumped magnetometer(OPM), transparency, orthogonal beams, spin exchange collision, pump beam modulation

中图分类号:

TP212.4

张振宇,程德福,王君,周志坚,连明昌. 光泵磁力仪中磁共振光学检测方法研究[J]. J4, 2011, 29(03): 252-.

ZHANG Zhen-yu, CHENG De-fu, WＡＮＧ-Jun,ZHOU Zhi-jian, LIAN Min. Research of Magnetic Resonance^,s Optical Detection Method in Optically Pumped Magnetometer[J]. J4, 2011, 29(03): 252-.