Systematically investigating the polarization gradient cooling in an optical molasses of ultracold cesium atoms

doi:10.1088/1674-1056/23/11/113702

›› 2014, Vol. 23 ›› Issue (11): 113702-113702.doi: 10.1088/1674-1056/23/11/113702

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Systematically investigating the polarization gradient cooling in an optical molasses of ultracold cesium atoms

姬中华, 元晋鹏, 赵延霆, 常雪芳, 肖连团, 贾锁堂

State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China

收稿日期:2014-03-12 修回日期:2014-05-11 出版日期:2014-11-15 发布日期:2014-11-15
基金资助:
Project supported by the National Basic Research Program of China (Grant Nos. 2012CB921603 and 2010CB923103), the International Science & Technology Cooperation Program of China (Grant No. 2011DFA12490), the National Natural Science Foundation of China (Grant Nos. 11304189, 61378015, and 61275209), the Project for Excellent Research Team of the National Natural Science Foundation of China (Grant No. 61121064), the Program for Changjiang Scholars, China, and the Innovative Research Team in University, China (Grant No. IRT13076).

Systematically investigating the polarization gradient cooling in an optical molasses of ultracold cesium atoms

Ji Zhong-Hua (姬中华), Yuan Jin-Peng (元晋鹏), Zhao Yan-Ting (赵延霆), Chang Xue-Fang (常雪芳), Xiao Lian-Tuan (肖连团), Jia Suo-Tang (贾锁堂)

State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China

Received:2014-03-12 Revised:2014-05-11 Online:2014-11-15 Published:2014-11-15
Contact: Zhao Yan-Ting E-mail:zhaoyt@sxu.edu.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant Nos. 2012CB921603 and 2010CB923103), the International Science & Technology Cooperation Program of China (Grant No. 2011DFA12490), the National Natural Science Foundation of China (Grant Nos. 11304189, 61378015, and 61275209), the Project for Excellent Research Team of the National Natural Science Foundation of China (Grant No. 61121064), the Program for Changjiang Scholars, China, and the Innovative Research Team in University, China (Grant No. IRT13076).

摘要/Abstract

摘要： We systematically investigate the polarization gradient cooling (PGC) process in an optical molasses of ultracold cesium atoms. The SR mode for changing the cooling laser, which means that the cooling laser frequency is stepped to the setting value while its intensity is ramped, is found to be the best for the PGC, compared with other modes studied. We verify that the heating effect of the cold atoms, which appears when the cooling laser intensity is lower than the saturation intensity, arises from insufficient polarization gradient cooling. Finally, an exponential decay function with a statistical explanation is introduced to explain the dependence of the cold atom temperature on the PGC interaction time.

关键词: ultracold atoms, optical molasses, polarization gradient cooling

Abstract: We systematically investigate the polarization gradient cooling (PGC) process in an optical molasses of ultracold cesium atoms. The SR mode for changing the cooling laser, which means that the cooling laser frequency is stepped to the setting value while its intensity is ramped, is found to be the best for the PGC, compared with other modes studied. We verify that the heating effect of the cold atoms, which appears when the cooling laser intensity is lower than the saturation intensity, arises from insufficient polarization gradient cooling. Finally, an exponential decay function with a statistical explanation is introduced to explain the dependence of the cold atom temperature on the PGC interaction time.

Key words: ultracold atoms, optical molasses, polarization gradient cooling

中图分类号: (Atom cooling methods)

37.10.De

67.85.-d (Ultracold gases, trapped gases) 37.10.Vz (Mechanical effects of light on atoms, molecules, and ions)

姬中华, 元晋鹏, 赵延霆, 常雪芳, 肖连团, 贾锁堂. Systematically investigating the polarization gradient cooling in an optical molasses of ultracold cesium atoms[J]. , 2014, 23(11): 113702-113702.

Ji Zhong-Hua (姬中华), Yuan Jin-Peng (元晋鹏), Zhao Yan-Ting (赵延霆), Chang Xue-Fang (常雪芳), Xiao Lian-Tuan (肖连团), Jia Suo-Tang (贾锁堂). Systematically investigating the polarization gradient cooling in an optical molasses of ultracold cesium atoms[J]. Chin. Phys. B, 2014, 23(11): 113702-113702.

参考文献 27

[1]	Bize S, Laurent P, Abgrall M, Marion H, Maksimovic I, Cacciapuoti L, Grünert J, Vian C, Pereira dos Santos F, Rosenbusch P, Lemonde P, Santarelli G, Wolf P, Clairon A, Luiten, Tobar M and Salomon C 2005 J. Phys. B 38 S449
[2]	Carnal O and Mlynek J 1991 Phys. Rev. Lett. 66 2689
[3]	Weber T, Herbig J, Mark M, Nägerl H C and Grimm R 2003 Science 299 232
[4]	Andrews M R, Townsend C G, Miesner H J, Durfee D S, Kurn D M and Ketterle W 1997 Science 275 637
[5]	Carr L D, DeMille D, Krems R V and Ye J 2009 New J. Phys. 11 055049
[6]	Garci-Ripoll J J, Zoller P and Cirac J I 2005 J. Phys. B 38 567
[7]	Chu S, Hollberg L, Bjorkholm J E, Cable A and Ashkin A 1985 Phys. Rev. Lett. 55 48
[8]	Kasevich M and Chu S 1992 Phys. Rev. Lett. 69 1741
[9]	Aspect A, Arimondo E, Kaiser R, Vansteenkiste N and Cohen Tannoudji C 1988 Phys. Rev. Lett. 61 826
[10]	Davis K B, Mewes M O, Joffe M A, Andrews M R and Ketterle W 1995 Phys. Rev. Lett. 74 5202
[11]	Dalibard J and Cohen-Tannoudji C 1989 J. Opt. Soc. Am. B 6 2023
[12]	Weiss D S, Riis E, Shevy Y, Ungar P J and Chu S 1989 J. Opt. Soc. Am. B 6 2072
[13]	Ungar P J, Weiss D S, Riis E and Chu S 1989 J. Opt. Soc. Am. B 6 2058
[14]	Fernandes D R, Sievers F, Kretzschmar N, Wu S, Salomon C and Chevy F 2012 Europhys. Lett. 100 63001
[15]	Kastberg A, Phillip W D, Rolston S L, Spreeuw R J C and Jessen P S 1995 Phys. Rev. Lett. 74 1542
[16]	Stecher H, Ritsch H, Zoller P, Sander F, Esslinger T and Hänsch T W 1997 Phys. Rev. A 55 545
[17]	Landini M, Roy S C, Trypogeorgos D, Fattori M, Inguscio M and Modugno G 2011 Phys. Rev. A 84 043432
[18]	Salomon C, Dalibard J, Phillips W D, Clairon A and Guellati S 1990 Europhys. Lett. 12 683
[19]	Wang B, Lü D S, Qu Q Z, Zhao J B, Li T, Liu L and Wang Y Z 2011 Chin. Phys. Lett. 28 063701
[20]	Hou J D, Li Y M, Yang D H and Wang Y Q 1998 Acta Phys. Sin. (Oversea Edition) 7 881
[21]	Han S L, Cheng B, Zhang J F, Xu Y F, Wang Z Y and Lin Q 2009 Chin. Phys. Lett. 26 123702
[22]	Ji Z H, Zhao Y T, Ma J, Xiao L T and Jia S T 2012 J. Phy. Soc. Jpn. 81 104301
[23]	Pradhan S and Jagatap B N 2008 Rev. Sci. Instrum. 79 013101
[24]	Shevy Y, Weiss D and Chu S 1989 Spin Polarized Quantum Systems (Singapore: World Scientific) pp. 287-294
[25]	Castin Y and Dalibard J 1991 Europhys. Lett. 14 761
[26]	Steck D A http://steck.us/alkalidata
[27]	Drewsen M, Laurent P, Nadir A, Santareli G, Clairon A, Castin Y, Grison D and Salomon C 1994 Appl. Phys. B 59 283

Systematically investigating the polarization gradient cooling in an optical molasses of ultracold cesium atoms

Systematically investigating the polarization gradient cooling in an optical molasses of ultracold cesium atoms

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