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.
基金
Supported by the International Cooperation Project of Ministry Science and Technology of China(2008DFR20420)
the Fundamental Research Funds of Central Universities(HEUCF20111111).
