Light-induced evaporative cooling in a magneto-optical trap

doi:10.1088/1674-1056/17/11/037

中国物理B ›› 2008, Vol. 17 ›› Issue (11): 4180-4183.doi: 10.1088/1674-1056/17/11/037

Light-induced evaporative cooling in a magneto-optical trap

成华东¹, 王育竹¹, 刘亮¹, 马红玉²

(1)Key Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; (2)Key Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

收稿日期:2008-02-27 修回日期:2008-05-26 出版日期:2008-11-20 发布日期:2008-11-20
基金资助:
Project supported by the Shanghai Pujiang Programme and the National Basic Research Programme of China (Grant No 2005CB724506) and the National Natural Science Foundation of China (Grant No 10604057).

Light-induced evaporative cooling in a magneto-optical trap

Ma Hong-Yu (马红玉)^ab, Cheng Hua-Dong (成华东)^a, Wang Yu-Zhu (王育竹)^a, Liu Liang (刘亮)^a

^a Key Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; ^b Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Received:2008-02-27 Revised:2008-05-26 Online:2008-11-20 Published:2008-11-20
Supported by:
Project supported by the Shanghai Pujiang Programme and the National Basic Research Programme of China (Grant No 2005CB724506) and the National Natural Science Foundation of China (Grant No 10604057).

摘要/Abstract

摘要： This paper presents an experimental demonstration of light-induced evaporative cooling in a magneto-optical trap. An additional laser is used to interact with atoms at the edge of the atomic cloud in the trap. These atoms get an additional force and evaporated away from the trap by both the magnetic field and laser fields. The remaining atoms have lower kinetic energy and thus are cooled. It reports the measurements on the temperature and atomic number after the evaporative cooling with different parameters including the distance between the laser and the centre of the atomic cloud, the detuning, the intensity. The results show that the light-induced evaporative cooling is a way to generate an ultra-cold atom source.

关键词: evaporative cooling, magneto-optical trap

Abstract: This paper presents an experimental demonstration of light-induced evaporative cooling in a magneto-optical trap. An additional laser is used to interact with atoms at the edge of the atomic cloud in the trap. These atoms get an additional force and evaporated away from the trap by both the magnetic field and laser fields. The remaining atoms have lower kinetic energy and thus are cooled. It reports the measurements on the temperature and atomic number after the evaporative cooling with different parameters including the distance between the laser and the centre of the atomic cloud, the detuning, the intensity. The results show that the light-induced evaporative cooling is a way to generate an ultra-cold atom source.

Key words: evaporative cooling, magneto-optical trap

中图分类号: (Atom cooling methods)

37.10.De

32.60.+i (Zeeman and Stark effects) 37.10.Vz (Mechanical effects of light on atoms, molecules, and ions)

马红玉, 成华东, 王育竹, 刘亮. Light-induced evaporative cooling in a magneto-optical trap[J]. 中国物理B, 2008, 17(11): 4180-4183.

Ma Hong-Yu (马红玉), Cheng Hua-Dong (成华东), Wang Yu-Zhu (王育竹), Liu Liang (刘亮). Light-induced evaporative cooling in a magneto-optical trap[J]. Chin. Phys. B, 2008, 17(11): 4180-4183.

[1]	Ye Zhang(张晔), Qi-Xin Liu(刘琪鑫), Jian-Fang Sun(孙剑芳), Zhen Xu(徐震), and Yu-Zhu Wang(王育竹). Enhanced cold mercury atom production with two-dimensional magneto-optical trap[J]. 中国物理B, 2022, 31(7): 73701-073701.
[2]	张迪, 李玉清, 王云飞, 付永明, 李鹏, 刘文良, 武寄洲, 马杰, 肖连团, 贾锁堂. Enhanced optical molasses cooling for Cs atoms with largely detuned cooling lasers[J]. 中国物理B, 2020, 29(2): 23203-023203.
[3]	顾跃凤, 黄云霞, 李传亮, 杨晓华. Collision of cold CaF molecules: Towards evaporative cooling[J]. 中国物理B, 2019, 28(3): 33401-033401.
[4]	许亮, 魏斌, 夏勇, 邓联忠, 印建平. BaF radical: A promising candidate for laser cooling and magneto-optical trapping[J]. 中国物理B, 2017, 26(3): 33702-033702.
[5]	黄家强, 颜学术, 吴晨菲, 张建伟, 王力军. Intense source of cold cesium atoms based on a two-dimensional magneto-optical trap with independent axial cooling and pushing[J]. 中国物理B, 2016, 25(6): 63701-063701.
[6]	谢笛舟, 卜文浩, 颜波. Microwave-mediated magneto-optical trap for polar molecules[J]. 中国物理B, 2016, 25(5): 53701-053701.
[7]	何军, 刘贝, 刁文婷, 王杰英, 靳刚, 王军民. Efficient loading of a single neutral atom into an optical microscopic tweezer[J]. 中国物理B, 2015, 24(4): 43701-043701.
[8]	孙慧, 王振霞, 王琴, 李兴佳, 刘建平, 印建平. Stark-potential evaporative cooling of polar molecules in a novel optical-access opened electrostatic trap[J]. 中国物理B, 2015, 24(11): 113101-113101.
[9]	汪丽蓉, 姬中华, 元晋鹏, 杨艳, 赵延霆, 马杰, 肖连团, 贾锁堂 . Investigation of ultracold atoms and molecules in a dark magneto-optical trap[J]. 中国物理B, 2012, 21(11): 113402-113402.
[10]	张一驰, 武寄洲, 李玉清, 马杰, 汪丽蓉, 赵延霆, 肖连团, 贾锁堂. Dependence of loading time on control parameters in a standard vapour–loaded magneto–optical trap[J]. 中国物理B, 2011, 20(12): 123701-123701.
[11]	王晓佳, 冯焱颖, 薛洪波, 周兆英, 张文栋. A cold ⁸⁷Rb atomic beam[J]. 中国物理B, 2011, 20(12): 126701-126701.
[12]	柯敏, 颜波, 程锋, 王育竹. Surface-induced evaporative cooling[J]. 中国物理B, 2009, 18(10): 4274-4280.
[13]	闫树斌, 耿　涛, 张天才, 王军民. Continuously transferring cold atoms in caesium double magneto-optical trap[J]. 中国物理B, 2006, 15(8): 1746-1751.
[14]	闫树斌, 刘涛, 耿涛, 张天才, 彭堃墀, 王军民. Absorption spectroscopy of cold caesium atoms confined in a magneto-optical trap[J]. 中国物理B, 2004, 13(10): 1669-1673.

Light-induced evaporative cooling in a magneto-optical trap

Light-induced evaporative cooling in a magneto-optical trap

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 14

Metrics

本文评价

推荐阅读 0