CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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All-Optical Cesium Atomic Magnetometer with High Sensitivity |
ZHANG Jun-Hai1**, LIU Qiang1,2, ZENG Xian-Jin1, LI Jiu-Xing1, SUN Wei-Min1 |
1Science School, Harbin Engineering University, Harbin 150001 2 Colleges of Electronic Science, Northeast Petroleum University, Daqing 163318 |
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Cite this article: |
ZHANG Jun-Hai, LIU Qiang, ZENG Xian-Jin et al 2012 Chin. Phys. Lett. 29 068501 |
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Abstract 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 1.8 mrad/Hz at Larmor precession resonance. Analyzing the signal-to-noise ratio from the experimentally observed spectrum, we predict that the magnetic measurement sensitivity of 0.3 pT/Hz1/2 would be obtained in the responsive range from 20 nT to 2000 nT.
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Received: 25 October 2011
Published: 31 May 2012
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