Weak magnetic field measurement by using all-optical potassium atomic spin magnetometer

Hong Zhang; Sheng Zou; Xiyuan Chen

doi:10.1117/12.2196945

3 December 2015 Weak magnetic field measurement by using all-optical potassium atomic spin magnetometer

Hong Zhang, Sheng Zou, Xiyuan Chen

Proceedings Volume 9794, Sixth International Conference on Electronics and Information Engineering; 97940A (2015) https://doi.org/10.1117/12.2196945
Event: Sixth International Conference on Electronics and Information Engineering, 2015, Dalian, China

Abstract

The SERF atomic spin magnetometer, which can be used to measure the residual weak magnetic field in the magnetic shield due to its ultrahigh sensitivity, is elaborated in this paper. The method of using the SERF atomic spin magnetometer to measure the residual weak magnetic field in the magnetic shield was presented. The compensating coils, which were placed inside the magnetic shield, produced the uniform magnetic fields along the x, y and z directions, and they were reverse direction with the residual weak magnetic fields; via the cross modulation method, the residual weak magnetic fields could be counteracted. At this time, the magnetic fields producing by the compensating coils were equal to the residual weak magnetic fields in the magnetic shield. The experimental results showed that the residual weak magnetic fields were approximate 0.5 nT, 1.0 nT and 7.0 nT along the x, y and z directions, respectively; and the maximum measurement errors were approximate 0.0169, 0.0377, and 0.5071 along the x, y and z directions, respectively. Finally, the reasons of measurement error were analyzed.

Citation Download Citation

Hong Zhang, Sheng Zou, and Xiyuan Chen "Weak magnetic field measurement by using all-optical potassium atomic spin magnetometer", Proc. SPIE 9794, Sixth International Conference on Electronics and Information Engineering, 97940A (3 December 2015); https://doi.org/10.1117/12.2196945

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available