Laser-assisted Stark deceleration of CaF in its rovibronic ground (high-field-seeking) state

doi:10.1088/1674-1056/28/4/043702

中国物理B ›› 2019, Vol. 28 ›› Issue (4): 43702-043702.doi: 10.1088/1674-1056/28/4/043702

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇下一篇

Laser-assisted Stark deceleration of CaF in its rovibronic ground (high-field-seeking) state

Yuefeng Gu(顾跃凤), Kai Chen(陈凯), Yunxia Huang(黄云霞), Xiaohua Yang(杨晓华)

1 School of Science, Nantong University, Nantong 226019, China;
2 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China

收稿日期:2018-12-10 修回日期:2019-01-29 出版日期:2019-04-05 发布日期:2019-04-05
通讯作者: Yunxia Huang, Xiaohua Yang E-mail:hyx@ntu.edu.cn;xhyang@ntu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11604164).

Laser-assisted Stark deceleration of CaF in its rovibronic ground (high-field-seeking) state

Yuefeng Gu(顾跃凤)¹, Kai Chen(陈凯)¹, Yunxia Huang(黄云霞)¹, Xiaohua Yang(杨晓华)^1,2

1 School of Science, Nantong University, Nantong 226019, China;
2 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China

Received:2018-12-10 Revised:2019-01-29 Online:2019-04-05 Published:2019-04-05
Contact: Yunxia Huang, Xiaohua Yang E-mail:hyx@ntu.edu.cn;xhyang@ntu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11604164).

摘要/Abstract

摘要：

A near-resonant, red-detuning laser-assisted Stark deceleration scheme is proposed to slow CaF in its high-field-seeking rovibronic ground state. The assisting Gaussian laser beam can confine CaF molecules transversely owing to the optical Stark effect. Simulations suggest that the present scheme is superior to previous Stark decelerators. Under typical experimental conditions, when the assisting laser frequency is red-detuned to the molecular transition (λ~606.3 nm) by 5.0 GHz and the laser power is about 5.6 W, the proposed decelerator can achieve a total number at the order of 10⁴ CaF molecules with a number density at the order of 10⁸ cm^-3. The equivalent temperature of the obtained cold CaF molecules is 2.3 mK. Additionally, the desired assisting laser power can be as low as about 1.2 W if keeping the red-detuning value to be 1.0 GHz, which further suggests its experimental feasibility.

关键词: Stark deceleration, polar molecule, optical Stark effect, high-field-seeking state

Abstract:

Key words: Stark deceleration, polar molecule, optical Stark effect, high-field-seeking state

中图分类号: (Slowing and cooling of molecules)

37.10.Mn

32.60.+i (Zeeman and Stark effects)

顾跃凤, 陈凯, 黄云霞, 杨晓华. Laser-assisted Stark deceleration of CaF in its rovibronic ground (high-field-seeking) state[J]. 中国物理B, 2019, 28(4): 43702-043702.

Yuefeng Gu(顾跃凤), Kai Chen(陈凯), Yunxia Huang(黄云霞), Xiaohua Yang(杨晓华). Laser-assisted Stark deceleration of CaF in its rovibronic ground (high-field-seeking) state[J]. Chin. Phys. B, 2019, 28(4): 43702-043702.

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Laser-assisted Stark deceleration of CaF in its rovibronic ground (high-field-seeking) state

Laser-assisted Stark deceleration of CaF in its rovibronic ground (high-field-seeking) state

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