Photoassociative Production and Detection of Ultracold Polar RbCs Molecules
JI Zhong-Hua, ZHANG Hong-Shan, WU Ji-Zhou, YUAN Jin-Peng, ZHAO Yan-Ting**, MA Jie, WANG Li-Rong , XIAO Lian-Tuan, JIA Suo-Tang
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Laser Spectroscopy Laboratory, College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006
Photoassociative Production and Detection of Ultracold Polar RbCs Molecules
JI Zhong-Hua, ZHANG Hong-Shan, WU Ji-Zhou, YUAN Jin-Peng, ZHAO Yan-Ting**, MA Jie, WANG Li-Rong , XIAO Lian-Tuan, JIA Suo-Tang
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Laser Spectroscopy Laboratory, College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006
摘要We have produced ultracold polar RbCs molecules via photoassociation starting from laser-cooled 85Rb and 133Cs atoms in a dual−species, forced dark magneto-optical trap. The formed electronically excited RbCs∗ molecules correlated to the Rb(5S1/2)+Cs(6P1/2) dissociation limit are observed by trap loss spectroscopy. Following the decay of these excited RbCs* molecules, the formed ground state molecules are directly ionized by a two-photon single-color pulse dye laser, which is a new ionization mechanism for ground state RbCs molecules and thence detected by time-of-flight mass spectroscopy.
Abstract：We have produced ultracold polar RbCs molecules via photoassociation starting from laser-cooled 85Rb and 133Cs atoms in a dual−species, forced dark magneto-optical trap. The formed electronically excited RbCs∗ molecules correlated to the Rb(5S1/2)+Cs(6P1/2) dissociation limit are observed by trap loss spectroscopy. Following the decay of these excited RbCs* molecules, the formed ground state molecules are directly ionized by a two-photon single-color pulse dye laser, which is a new ionization mechanism for ground state RbCs molecules and thence detected by time-of-flight mass spectroscopy.
[1] Carr L D, DeMille D, Krems R V and Ye J 2009 New J. Phys. 11 055049
[2] Santos L, Shlyapnikov G V, Zoller P and Lewenstein M 2000 Phys. Rev. Lett. 85 1791
[3] Kozlov M G and Labzowsky L N 1995 J. Phys. B 28 1933
[4] Ospelkaus S, Ni K –K, Wang D, de Miranda M H G, Neyenhuis B, Quéméner, Julienne P S, Bohn J L, Jin D S and Ye J 2010 Science 327 853
[5] DeMille D 2002 Phys. Rev. Lett. 88 067901
[6] Weinstein J D, deCarvalho R, Guillet T, Friedrich and Doyle J M 1998 Nature 395 148
[7] Bethlem H L, Berden G, Crompvoets F M H, Jongma R T, van Roij A J A and Meijer G 2000 Nature 406 491
[8] Köhler T Góral K and Julienne P S 2006 Rev. Mod. Phys. 78 1311
[9] Jones K M, Tiesinga E, Lett P D and Julienne P S 2006 Rev. Mod. Phys. 78 483
[10] Sage J M, Sainis S, Bergeman T and DeMille D 2005 Phys. Rev. Letts. 94 203001
[11] Mancini M W, Telles G D, Caires A R L, Bagnato V S and Marcassa L G 2004 Phys. Rev. Lett. 92 133203
[12] Haimberger C, Kleinert J, Bhattacharya M and Bigelow N P 2004 Phys. Rev. A 70 021402
[13] Deiglmayr J, Grochola A, Repp M, Mörtlbauer K, Glück C, Lange J, Dulieu O, Wester R and Weidemüller M 2008 Phys. Rev. Lett. 101 133004
[14] Ni K –K, Ospelkaus S, de Miranda M H G, Péer A, Neyenhuis B, Zirbel J J, Kotochigova S, Julienne P S, Jin D S and Ye J 2008 Science 322 231
[15] Ji Z H, Wu J Z, Ma J, Feng Z G, Zhang L J, Zhao Y T, Wang L R, Xiao L T and Jia S T 2010 Chin. Phys. Lett. 27 253701
[16] Zhang S A, Chen Y T, Wang Z G and Sun Z R 2009 Chin. Phys. Lett. 26 033201
[17] Allouche A R, Korek M, Fakherddin K, Chaalan A, Dagher M, Taher F and Auber-Frécon M 2000 J. Phys. B 33 2307
Fahs H, Allouche A R, Korek M and Aubert-Frécon M 2002 J. Phys. B 35 1501
[18] Ketterle W, Davis K B, Joffe M A, Martin A and Pritchard D E 1993 Phys. Rev. Lett. 70 2253
Townsend C G, Edwards N H, Zetie K P, Cooper C J, Rink J and Foot C J 1996 Phys. Rev. A 53 1702
Anderson M H, Petrich W, Ensher J R and Cornell E A 1994 Phys. Rev. A 50 R3597
[19] Wang L R, Ma J, Li C Y, Zhao J M, Xiao L T and Jia S T 2007 Appl. Phys. B 89 53
[20] Kerman A J, Sage J M, Sainis S, Bergeman T and DeMille D 2004 Phys. Rev. Lett. 92 033004
[21] Bohn J L and Julienne P S 1999 Phys. Rev. A 60 414
[22] Kotochigova S and Tiesinga E 2005 J. Chem. Phys. 123 174304
[23] Geng Z D, Jia N, Zhao X, Xia T Y and Jing H 2010 Chin. Phys. Lett. 27 030303
2011, Vol. 28 
