The Open Automation and Control Systems Journal

2015, 7 : 1968-1972
Published online 2015 October 22. DOI: 10.2174/1874444301507011968
Publisher ID: TOAUTOCJ-7-1968

Influence of Spin Projection Noise on the Sensitivity of Cs Atom Magnetometer

Wang Feng , Li Hongmei , Liu Bingsheng , Ren changyu and Shi Hongxin
College of Science, Heilongjiang University of Science and Technology, Harbin 150022, China.

ABSTRACT

This article introduces the influence of laser’s spin projection noise on the sensitivity of Cs atom magnetometer and concludes that the theoretical value of the spin projection noise is about1.23fT·Hz-1/2 under the optimization conditions of the atom steam chest, namely temperature as 105°C, volume as 0.0785cm3 and molecular density as 1.7×1013 cm-3. Such research has provided us with the necessary basis for the experimental study on Cs atom magnetometer.

Keywords:

Cs vapor magnetometer, Atom Magnetometer Sensitivity, Spin projection noise, Optical Pumping.