激光冷却获得高亮度的亚稳态惰性气体原子束和原子阱

程存峰; 杨国民; 蒋蔚; 潘虎; 孙羽; 刘安雯; 成国胜; 胡水明

doi:10.7498/aps.60.103701

摘要

高强度的亚稳态惰性原子束流在原子分子物理实验研究中具有广泛的应用.使用射频电离方法和激光横向冷却技术制备了高强度的亚稳态氪原子束流,并使用数值模拟方法对横向冷却激光场中的原子径迹进行了分析.通过激光诱导荧光光谱方法测量原子束的束流特性,结果显示,横向冷却后在束流源下游230 cm处的原子束流强度达1.6atoms/(s*sr),束流强度提高了两个量级.利用这种高强度原子束流,我们成功囚禁了1.31010个亚稳态84Kr原子,同时冷原子装载速率达到了3.01011atoms/s;并利用该装置成功地实现了高亮度的亚稳态氩原子束和原子阱.

关键词:

Abstract

Metastable noble gas atomic beam is widely used in atomic and molecular physics studies.Using radio-frequency discharge and transverse laser cooling, we produced a well-collimated intense meta-stable Krypton beam.Numerical simulation is also used to analyze the trajectories of atoms in an optic field produced by transverse cooling laser beams.The charactersisticl of the atomic beam are determined by measuring the laser induced fluorescence.The atomic beam flux measured at 230 cm downstream is 1.61016 atoms/(s*sr), which is enhanced by two orders of magnitude.The Kr atoms are finally trapped in a magneto-optic trap.A total of 1.31010 meta-stable 84Kr atoms can be simultaneously trapped with a loading rate of 3.01011 atoms/s.The same setup is also successfully used to obtain a bright metastable atomic argon beam and trap.

Keywords:

作者及机构信息

1.
合肥微尺度物质科学国家实验室,中国科学技术大学化学物理系,合肥 230026

基金项目: 国家自然科学基金(批准号:90921006,10728408)和中国科学院重大仪器研制项目(批准号:YZ200765)资助的课题.

Authors and contacts

1.
Hefei National Laboratory for Physical Sciences at the Micro-scale,Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China

参考文献

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施引文献

[1]	Wieman C, Pritchard D, Wineland D 1999 Rev. Mod. Phys. 71 S253
[2]
[3]	Metcalf H J, van der Straten P 1999 Laser cooling and trapping (New York: Springer-Verlag)
[4]
[5]	Hu S M, Lu Z T, Yan Z C 2009 Frontiers of Physics in China 4 165
[6]	Mueller P, Wang L B, Drake G W F, Bailey K, Lu Z T, O'Connor T P 2005 Phys. Rev. Lett. 94 133001
[7]
[8]
[9]	Wang L B, Mueller P, Drake G W F, Greene J P, Henderson D, Holt R J, Janssens R V F, Jiang C L, Lu Z T, O'Connor T P, Pardo R C, Rehm K E, Schiffer J P, Tang X D 2004 Phys. Rev. Lett. 93 142501
[10]	Mueller P, Sulai I A, Villari A C C, Alcantara-Nunez J A, Alves-Conde R, Bailey K, Drake G W F, Dubois M, Eleon C, Gaubert G, Holt R J, Janssens R V F, Lecesne N, Lu Z T, O'Connor T P, Saint-Laurent M G, Thomas J C, Wang L B 2007 Phys. Rev. Lett. 99 252501
[11]
[12]	Wang L B, Lu Z T, Mueller P 2009 Wuli 38 339 (in Chinese) [王立邦、卢征天、彼得穆勒 2009 物理 38 339]
[13]
[14]
[15]	Deuar P, Drummond P D 2007 Phys. Rev. Lett. 98 120402
[16]	Band Y B, Trippenbach M, Burke J P, Julienne P S 2000 Phys. Rev. Lett. 84 5462
[17]
[18]
[19]	Zahzam N, Vogt T, Mudrich M, Comparat D, Pillet P 2006 Phys. Rev. Lett. 96 023202
[20]
[21]	Yurovsky V A, Ben-Reuven A 1998 J. Phys. Chem. A 102 9476
[22]
[23]	Wang G P, Ji W B, Ma J, Wang L R, Xiao L T, Jia S T 2008 Chinese Journal of Lasers 35 221 (in Chinese) [王贵平、冀炜邦、马杰、汪丽蓉、肖连团、贾锁堂 2008 中国激光 35 221]
[24]	Van Abeelen F A, Heinzen D J, Verhaar B J 1998 Phys. Rev. A 57 R4102
[25]
[26]	Courteille P, Freeland R S, Heinzen D J, Van Abeelen F A, Verhaar B J 1998 Phys. Rev. Lett. 81 69
[27]
[28]
[29]	Deb B, You L 2003 Phys. Rev. A 68 033408
[30]	Ramirez-Serrano J, DeGraffenreid W, Weiner J, Tiesinga E, Julienne P S 2004 Phys. Rev. A 69 042708
[31]
[32]
[33]	Junker M, Dries D, Welford C, Hitchcock J, Chen Y P, Hulet R G 2008 Phys. Rev. Lett. 101 060406
[34]	Mu R W, Li Y L, Ji X M, Yin J P 2006 Acta Phys. Sin. 55 6333 (in Chinese) [沐仁旺、李雅丽、纪宪明、印建平 2006 物理学报 55 6333]
[35]
[36]	Wang L R, Jia S T 2006 Acta Sinica Quantum Optica 12 143 (in Chinese) [汪丽蓉、贾锁堂 2006 量子光学学报 12 143]
[37]
[38]
[39]	Chen C Y, Li Y M, Bailey K, O'Connor T P, Young L, Lu Z T 1999 Science 286 1139
[40]
[41]	Du X, Purtschert R, Bailey K, Lehmann B E, Lorenzo R, Lu Z T, Mueller P, O'Connor T P, Sturchio N C 2003 Geo.Res.Lett. 30 2068
[42]
[43]	Du X, Bailey K, Lu Z T, Mueller P, O'Connor T P, Young L 2004 Rev. Sci. Instrum. 75 3224
[44]
[45]	Du X, Lu Z T 2005 Wuli 34 408 (in Chinese) [杜旭、卢征天 2005 物理 34 408]
[46]	Zhou S Y, Xu Z, Zhou S Y, Wang Y Z 2007 Acta Phys. Sin. 56 165 (in Chinese) [周蜀渝、徐震、周善钰、王育竹 2007 物理学报 56 165] \
[47]
[48]
[49]	Liu L, Chen H X, Wang Y Z 1993 Acta Phys. Sin. 42 1762 (in Chinese) [刘亮、陈洪新、王育竹 1993 物理学报 42 1762]
[50]	Leefer N, Cingoz A, Gerber-Siff B, Sharma A, Torgerson J R, Budker D 2010 Phys. Rev. A 81 043427
[51]
[52]
[53]	DeGraffenreid W, Ramirez-Serrano J, Liu Y M, Weiner J 2000 Rev.Sci.Instrum. 71 3668
[54]	Ma Y, Zhang B W, Zheng C L, Ma S S, Li F S, Wang Z S, Li T B 2006 Acta Phys. Sin. 55 4086 (in Chinese) [马艳、张宝武、郑春兰、马珊珊、李佛生、王占山、李同保 2006 物理学报 55 4086]
[55]
[56]
[57]	Zhang B W, Zhang W T, Ma Y, Li T B 2008 Acta Phys. Sin. 57 5485 (in Chinese) [张宝武、张文涛、马艳、李同保 2008 物理学报 57 5485]
[58]
[59]	Ding Y, Bailey K, Davis A M, Hu S M, Lu Z T, O'Connor T P 2006 Rev.Sci.Instrum. 77 126105
[60]	Young L, Yang D, Dunford R W 2002 J. Phys. B 35 2985
[61]
[62]	Telles G, Ishikawa T, Gibbs M, Raman C 2010 Phys. Rev. A 81 032710
[63]

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