Photoassociation of ultracold RbCs molecules into the (2)0- state (v=189,190) below the 5S1/2+6P1/2 dissociation limit

doi:10.1088/1674-1056/22/9/093701

Abstract Ultracold polar RbCs molecules are produced via photoassociation in a laser-cooled mixture of ⁸⁵Rb and ¹³³Cs atoms. The a³Σ⁺ state molecules which decay from electronically excited (2)0^- state RbCs molecules are detected by resonance-enhanced two-photon ionization. The new rovibrational levels (v=189, 190) in the (2)0^- state are also observed, which exist in theory and have not been observed in experiments yet. The corresponding rotational constants are measured by photoassociation spectroscopy, which are consistent with theoretical calculations using a nonrigid rotor model.

Keywords: photoassociation technique ultracold RbCs molecules rovibrational spectroscopy

Received: 04 January 2013
Revised: 12 March 2013
Accepted manuscript online:

PACS:	37.10.-x	(Atom, molecule, and ion cooling methods)
	34.80.Gs	(Molecular excitation and ionization)
	34.50.Ez	(Rotational and vibrational energy transfer)
	33.20.Vq	(Vibration-rotation analysis)

Fund: Project supported by the National Basic Research Program of China (Grant No. 2012CB921603), the International Science & Technology Cooperation Program of China (Grant No. 2011DFA12490), the National Natural Science Foundation of China (Grant Nos. 61275209, 10934004, and 11004125), and the National Natural Science Foundation for Excellent Research Team, China (Grant No. 61121064).

Corresponding Authors: Zhao Yan-Ting
E-mail: zhaoyt@sxu.edu.cn

Cite this article:

Chang Xue-Fang (常雪芳), Ji Zhong-Hua (姬中华), Yuan Jin-Peng (元晋鹏), Zhao Yan-Ting (赵延霆), Yang Yong-Gang (杨勇刚), Xiao Lian-Tuan (肖连团), Jia Suo-Tang (贾锁堂) Photoassociation of ultracold RbCs molecules into the (2)0^- state (v=189,190) below the 5S_1/2+6P_1/2 dissociation limit 2013 Chin. Phys. B 22 093701

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Photoassociation of ultracold RbCs molecules into the (2)0- state (v=189,190) below the 5S1/2+6P1/2 dissociation limit

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Photoassociation of ultracold RbCs molecules into the (2)0^- state (v=189,190) below the 5S_1/2+6P_1/2 dissociation limit