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A cesium atomic magnetometer based on laser-pumped rf resonance has been investigated and demonstrated experimentally. Atoms are polarized and pumped to dark states by circularly polarized light. When there exists a magnetic field, the corresponding magnetization will be precessing around the magnetic field at Larmor frequency. By means of adding a resonant rf magnetic field, the atoms will be depolarized and absorb photons again. By detecting the spectrum of the transmitted light, one can obtain the information about the external magnetic field. We build an 894nm external cavity diode laser with a frequency stabilization device, and a low noise magnetic field measurement environment. After the optimization of the magnetometer parameter and closed-loop measurement, an ultimate sensitivity of 19 fT/Hz1/2 and an intrinsic sensitivity of 1.8 pT/Hz1/2 have been achieved with the spatial resolution smaller than 2 cm.
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Keywords:
- optically pumping /
- Zeeman effect /
- ODMR /
- magnetometer
[1] Bison G, Wynands R, Weis A 2003 Appl. Phys. B 76 325
[2] Carlos Go'mez, Roberto Hornero, Daniel Aba'solo, Alberto Ferna'ndez, Javier Escudero 2007 Computer Methods and Programs in Biomedicine 87 239
[3] Karsten Sternickel, Alex Braginski 2003 Supercond. Sci. Technol 19 160
[4] Groeger S, Bison G 2006 Sensors and Actuators A: Phys. 129 1
[5] Xu S 2008 Phys. Rev. A 78 13404
[6] Sarma B S P, Verma B K, Satyanarayana S V 1999 Geophysics 64 1735
[7] Mende S B, Harris S E, Frey H U, Angelopoulos V, Russell C T, Donovan E, Jackel B, Greffen M, Peticolas L M 2008 Space Sci. Rev. 141 357
[8] Russell C T, Chi P J, Dearborn D J, Ge Y S, Kuo-Tiong B, Means J D, Pierce D R, Rowe K M, Snare R C 2008 Space Sci. Rev. 141 389
[9] Turkakin H, Marchand R, Kale Z C 2008 Journal of Geophysical Research 113 1
[10] Carreon H 2008 Wear 265 255
[11] Zivotsky O, Postava K, Kraus L, J iraskova Y, Juraszek J, Teillet J, Barcova K, Svec P S, Janickovic D, Pistora J 2008 Journal of Magnetism and Magnetic Materials 320 1535
[12] Bonavolonta C, Valentino A, Peluso G, Barone A 2007 Applied Superconductivity 17 772
[13] Kuroda M, Yamanaka S 2005 NDT & E International 38 53
[14] Tralshawala N, Claycomb J R, Miller J H 1997 Appl. Phys. Lett. 71 2874
[15] Huang K K 2012 Chin. Phys. Lett. 29 100701
[16] Kanorsky S, Lang S, LÄucke S, Ross S, HÄansch T, Weis A 1996 Phys. Rev. A 54 1010
[17] Huang K K, Li N, Lu X H 2011 Infrared and Laser Engineering 11 2192 (in Chinese) [黄凯凯, 李楠, 陆璇辉 2011 红外与激光工程 11 2129]
[18] Corwin K L, Lu T Z, Hand C F, Epstain R J, Wieman C E 1998 Appl. Optics 37 3295
[19] Liu K, Zhang S Y, Gu W 2012 Modern Electronics Technique 35 7 (in Chinese) [刘坤, 张松勇, 顾伟 2012 现代电子技术 35 7]
[20] Rife D R, Boorstyn R T 1974 IEEE Transactions on Information Theory 20 591
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[1] Bison G, Wynands R, Weis A 2003 Appl. Phys. B 76 325
[2] Carlos Go'mez, Roberto Hornero, Daniel Aba'solo, Alberto Ferna'ndez, Javier Escudero 2007 Computer Methods and Programs in Biomedicine 87 239
[3] Karsten Sternickel, Alex Braginski 2003 Supercond. Sci. Technol 19 160
[4] Groeger S, Bison G 2006 Sensors and Actuators A: Phys. 129 1
[5] Xu S 2008 Phys. Rev. A 78 13404
[6] Sarma B S P, Verma B K, Satyanarayana S V 1999 Geophysics 64 1735
[7] Mende S B, Harris S E, Frey H U, Angelopoulos V, Russell C T, Donovan E, Jackel B, Greffen M, Peticolas L M 2008 Space Sci. Rev. 141 357
[8] Russell C T, Chi P J, Dearborn D J, Ge Y S, Kuo-Tiong B, Means J D, Pierce D R, Rowe K M, Snare R C 2008 Space Sci. Rev. 141 389
[9] Turkakin H, Marchand R, Kale Z C 2008 Journal of Geophysical Research 113 1
[10] Carreon H 2008 Wear 265 255
[11] Zivotsky O, Postava K, Kraus L, J iraskova Y, Juraszek J, Teillet J, Barcova K, Svec P S, Janickovic D, Pistora J 2008 Journal of Magnetism and Magnetic Materials 320 1535
[12] Bonavolonta C, Valentino A, Peluso G, Barone A 2007 Applied Superconductivity 17 772
[13] Kuroda M, Yamanaka S 2005 NDT & E International 38 53
[14] Tralshawala N, Claycomb J R, Miller J H 1997 Appl. Phys. Lett. 71 2874
[15] Huang K K 2012 Chin. Phys. Lett. 29 100701
[16] Kanorsky S, Lang S, LÄucke S, Ross S, HÄansch T, Weis A 1996 Phys. Rev. A 54 1010
[17] Huang K K, Li N, Lu X H 2011 Infrared and Laser Engineering 11 2192 (in Chinese) [黄凯凯, 李楠, 陆璇辉 2011 红外与激光工程 11 2129]
[18] Corwin K L, Lu T Z, Hand C F, Epstain R J, Wieman C E 1998 Appl. Optics 37 3295
[19] Liu K, Zhang S Y, Gu W 2012 Modern Electronics Technique 35 7 (in Chinese) [刘坤, 张松勇, 顾伟 2012 现代电子技术 35 7]
[20] Rife D R, Boorstyn R T 1974 IEEE Transactions on Information Theory 20 591
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