High resolution photoassociation spectra of an ultracold Cs2 long-range 0u+ (6S1/2+6P1/2) state

doi:10.1088/1674-1056/22/9/093301

Abstract In this paper, ultracold cesium molecules are formed through photoassociation technology, which is carried out in a magneto-optical trap. High resolution photoassociaion spectra with the rotational progressions up to J=7 are obtained. Three rovibrational levels of the long-range 0_u⁺ state of Cs₂ below the (6S_1/2+6P_1/2) dissociation limit are specifically investigated. By fitting their binding energy intervals to the non-rigid rotational model, the rotational constant of the long-range 0_u⁺ state is determined. A proportional dependence of the value of the rotational constant on the vibrational quantum number is demonstrated.

Keywords: ultracold molecules photoassociation trap-loss spectrum long-range molecular coefficient

Received: 25 March 2013
Revised: 30 May 2013
Accepted manuscript online:

PACS:	33.20.Vq	(Vibration-rotation analysis)
	33.15.Pw	(Fine and hyperfine structure)
	31.10.+z	(Theory of electronic structure, electronic transitions, and chemical binding)

Fund: Project supported by the National Basic Research Program of China (Grant No. 2012CB921603), the National High Technology Research and Development Program of China (Grant No. 2011AA010801), the National Natural Science Foundation of China (Grant Nos. 61008012 and 10934004), the International Science and Technology Cooperation Program of China (Grant No. 2001DFA12490), the Project for Excellent Research Team of the National Natural Science Foundation of China (Grant No. 61121064), and the New Teacher Fund of the Ministry of Education of China (Grant No. 20101401120004).

Corresponding Authors: Ma Jie
E-mail: mj@sxu.edu.cn

Cite this article:

Chen Peng (陈鹏), Li Yu-Qing (李玉清), Zhang Yi-Chi (张一驰), Wu Ji-Zhou (武寄洲), Ma Jie (马杰), Xiao Lian-Tuan (肖连团), Jia Suo-Tang (贾锁堂) High resolution photoassociation spectra of an ultracold Cs₂ long-range 0_u⁺ (6S_1/2+6P_1/2) state 2013 Chin. Phys. B 22 093301

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High resolution photoassociation spectra of an ultracold Cs2 long-range 0u+ (6S1/2+6P1/2) state

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High resolution photoassociation spectra of an ultracold Cs₂ long-range 0_u⁺ (6S_1/2+6P_1/2) state