Spin dynamics of the potassium magnetometer in spin-exchange relaxation free regime

doi:10.1088/1674-1056/25/1/010302

Abstract

The laser-pumped potassium spin-exchange relaxation free (SERF) magnetometer is the most sensitive detector of magnetic field and has many important applications. We present the experimental results of our potassium SERF magnetometer. A pump-probe approach is used to identify the unique spin dynamics of the atomic ensemble in the SERF regime. A single channel sensitivity of 8 f· THz^-1/2 is achieved with our SERF magnetometer.

Keywords: Larmor process spin-exchange relaxation free magnetometer atomic magnetometer

Received: 19 October 2015
Revised: 05 November 2015
Accepted manuscript online:

PACS:	03.65.Sq	(Semiclassical theories and applications)
	32.30.Dx	(Magnetic resonance spectra)
	32.50.+d	(Fluorescence, phosphorescence (including quenching))
	33.57.+c	(Magneto-optical and electro-optical spectra and effects)

Fund:

Project supported by the National Natural Science Foundation of China (Grant No. 61227902).

Corresponding Authors: Ru-Quan Wang
E-mail: ruquanwang@aphy.iphy.ac.cn

Cite this article:

Ji-Qing Fu(伏吉庆), Peng-Cheng Du(杜鹏程), Qing Zhou(周庆), Ru-Quan Wang(王如泉) Spin dynamics of the potassium magnetometer in spin-exchange relaxation free regime 2016 Chin. Phys. B 25 010302

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