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本文报道了一种基于激光抽运射频共振的铯原子磁力仪. 通过圆偏振光将铯原子抽运到暗态, 实现偏极化. 外磁场存在时, 原子磁矩将以拉莫尔频率绕外磁场进动. 在共振射频磁场的作用下, 原子被去极化而重新吸收光子. 通过探测出射光光谱可以测得拉莫尔频率进而得到外磁场的信息. 本文通过运用自制的894 nm 外腔半导体激光器, 建立了激光稳频装置和低噪声磁场测量环境, 实现了一种基于铯原子激光抽运射频共振的磁力仪. 通过磁力仪参数优化以及闭环测量, 磁力仪测量的外磁场达到了19 fT/Hz1/2的极限灵敏度和1.8 pT/Hz1/2的本征灵敏度, 空间分辨率小于2 cm.
[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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