11 October 2010 Study of optimum pumping intensity at Cs vapor magnetometer
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Abstract
The paper describes a new magnetometer with Cs vapor in the spin exchange relaxation free (SERF) regime. Because cesium atom has a higher saturated vapor pressure than other alkali metallic atoms, so the magnetometer has required lower operated temperature. We have discussed the effect of different pumping intensities on the polarization and the pumping rate at 105°C in theory; and the result shows out the magnetometer will have maximum sensitivity when the pumping intensity is 52mW/cm2. Taking into account all relaxations including collision relaxations, diffusion relaxation and pumping relaxation from pump light, we find the relaxation rate will be about 6Hz for the cesium magnetometer with SERF.
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Junhai Zhang, Feng Wang, Jiuxing Li, Weimin Sun, "Study of optimum pumping intensity at Cs vapor magnetometer", Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 76560W (11 October 2010); doi: 10.1117/12.866140; https://doi.org/10.1117/12.866140
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