Influence of He Buffer Gas Pressure on Cs Atomic Polarizability

Abstract:

All optical cesium (Cs) atomic magnetometer with high sensitivity is an important technique to detect weak magnetic field. The Cs vapor cell is filled with He buffer gas to reduce spin relaxation rate. However the pressure of He also influences the Cs atomic polarizability due to pressure broadening effect. In this work, the principle of all optical Cs atomic magnetometer is analyzed. The rate equation is used to calculate Cs atomic polarizability as the pressure of He is about 100Torr and pure Cs vapor cell. The calculation shows that higher pressure of He buffer gas can decrease Cs atomic polarizability without considering spin-exchange collisions, as the pump beam frequency is locked to Cs D1 transition F=3F=4.

• Periodical: Applied Mechanics and Materials (Volumes 475-476)
• Pages: 173-176
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.475-476.173
• Online since: December 2013
• Authors: Qiang Liu*, Yu Dan Sun, Yan Nan Zhuo, Jia Xing Wang, Tian Shu Fu
• Keywords: Atomic Magnetometer, Atomic Polarizability, Cesium, He Buffer Gas

References

[1] I. K. Kominis, T. W. Kornack, J. C. Allred, M. V. Romalis. Nature. Vol. 422 (2003), p.596.

DOI: 10.1038/nature01484

[2] I.M. Savukov, M.V. Romalis. Physical Review Letters. Vol. 94(2005), p.123001.

[3] H. Xia, A. Ben-Amar Baranga,D. Hoffman, M. V. Romalis. Applied Physics Letters, Vol. 89 (2006), p.211104.

DOI: 10.1063/1.2392722

[4] C.D. Zhang. Geophysical&Geochemical Exploration. Vol. 29(2005), p.283.

[5] S. -K. Lee, K.L. Sauer, S.J. Seltzer, O. Alem, M.V. Romalis. Applied Physics Letters. Vol. 89 (2006), p.214106.

[6] B. Lindseth, P. Schwindt, J. Kitching, D. Fischer, V. Schusterman. Computer in Carduology. Vol. 90(2007), p.443.

[7] H.B. Dang, A.C. Maloof, M.V. Romalis. Applied Physics Letters. Vol. 97(2010), p.151110.

[8] Q. Liu, X.J. Zeng, J.H. Zhang, Z.J. Huang, W.M. Sun. Journal of Natural Science of Heilongjiang University. Vol. 27(2010), p.814.

[9] M.P. Ledbetter, I.M. Savukov, V.M. Acosta, D. Budker. Physical Review A. Vol. 77(2008), p.033408.

[10] J.H. Zhang, Q. Liu, X.J. Zeng, J.X. Li, W.M. Sun. Chin. Phys. Lett. Vol. 29(2012), p.068501.

[11] L. Harris, C.S. Adams, S.L. Cornish, I.C. Mcleod, E. Tarleton and I.G. Hughes. Physical Review A. Vol. 73(2006), p.62509.

[12] W. Chalupczak, R.M. Godun, P. Anielski, A. Wojciechowski, S. Pustelny, W. Gawlik. Physical Review A. Vol. 85(2012), p.043402.

DOI: 10.1103/physreva.85.043402

[13] A. Andaikar, R.B. Warrington. Physical Review A. Vol. 65(2008), p.032708.