摘要
An all-optical cesium magnetometer with high sensitivity based on absorptive detection is reported.The experiment achieves a polarized rotational spectrum of the probe light which is induced by circular dichroism and a quarter wave plate together.The frequency response of the rotational spectrum is 1.8mrad/Hz at Larmor precession resonance.Analyzing the signal-to-noise ratio from the experimentally observed spectrum,we predict that the magnetic measurement sensitivity of 0.3pT/Hz^(1/2) would be obtained in the responsive range from 20nT to 2000nT.
作者
张军海
刘强
曾宪金
李九兴
孙伟民
ZHANG Jun-Hai;LIU Qiang;ZENG Xian-Jin;LI Jiu-Xing;SUN Wei-Min(Science School,Harbin Engineering University,Harbin 150001;Colleges of Electronic Science,Northeast Petroleum University,Daqing 163318)
基金
Supported by the International Cooperation Project of Ministry Science and Technology of China(2008DFR20420)
the Fundamental Research Funds of Central Universities(HEUCF20111111).
