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We use time-of-flight mass spectroscopy to detect the ultracold ground state Cs2 molecules formed directly by a photoassociation due to the trapping laser beams and repumping laser beam in a magneto-optical trap. We investigate the dependences of the Cs2+ intensity on operating voltage of micro-channel-plate, accelerating field intensity and duration time of the accelerating field. The experimental results are consistent with theoretical fitting. We obtain the best optimal parameters suited to our experimental condition, which is important for the future experiment on ultracold molecule photoassociation and photoionization spectroscopy.
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Keywords:
- time-of-flight mass spectroscopy /
- ultracold molecule /
- magneto-optical trap /
- photoassociation
[1] Bize S, Laurent P, Abgrall M, Marion H, Maksimovic I, Cacciapuoti L, Grünert J, Vian C, Pereira dos Santos F, Rosenbusch P, Lemonde P, Santarelli G, Wolf P, Clairon A, Luiten A, Tobar M, Salomon C 2005 J. Phys. B: At. Mol. Opt. Phys. 38 449
[2] Shin Y, Saba M, Pasquini T A, Ketterle W, Pritchard D E, Leanhardt A E 2004 Phys. Rev. Lett. 92 050405
[3] Weber T, Herbig J, Mark M, Nägerl H C, Grimm R 2003 Science 299 232
[4] Holland M, Burnett K, Gardiner C, Cirac J I, Zoller P 1996 Phys. Rev. A 54 1757
[5] Ospelkaus, Ni K K, Wang D, de Miranda M H G, Neyenhuis B, Quemener G, Julienne P S, Bohn J L, Jin D S, Ye J 2010 Science 327 853
[6] DeMille D 2002 Phys. Rev. Lett. 88 067901
[7] Inbar E, Mahal V, Arie A 1996 J. Opt. Soc. Am. B 13 1598
[8] Chapman M S, Ekstrom C R, Hammond T D, Rubenstein R A, Schmiedmayer J, Wehinger S, Pritchard D E 1995 Phys. Rev. Lett. 74 4783
[9] Bahns J T, Stwalley W C, Gould P L 1996 J. Chem. Phys. 104 9689
[10] Shuman E S, Barry J F, DeMille D 2010 Nature 467 820
[11] Doyle J M, Friedrich B, Kim J, Patterson D 1995 Phys. Rev. A 52 2515
[12] Bethlem H L, Berden G, Crompvoets F M H, Jongma R T, van Roij A J A, Meijer G 2000 Nature 406 491
[13] Chin C, Kerman A J, Vuletić V, Chu S 2003 Phys. Rev. Lett. 90 033201
[14] Jones K M, Tiesinga E, Lett P D, Julienne P S 2006 Rev. Mod. Phys. 78 483
[15] Stwalley W C, Wang H 1999 J. Mol. Spectrosc. 195 194
[16] Fioretti A, Comparat D, Crubellier A, Dulieu O, Seeuws F M, Pillet P 1998 Phys. Rev. Lett. 80 4402
[17] Lett P D, Helmerson K, Phillips W D, Ratliff L P, Rolston S L, Wagshul M E 1993 Phys. Rev. Lett. 71 2200
[18] Miller J D, Cline R A, Heinzen D J 1993 Phys. Rev. Lett. 71 2204
[19] Wang H, Gould P J, Stwalley W C 1996 Phys. Rev. A 53 1216
[20] Abraham E R I, Ritchie N W M, McAlexander W I, Hulet R G 1995 J. Chem. Phys. 103 7773
[21] Wang L R, Ma J, Zhang L J, Xiao L T, Jia S T 2007 Acta Phys. Sin. 56 6373 (in Chinese) [汪丽蓉, 马杰, 张临杰, 肖连团, 贾锁堂 2007 物理学报 56 6373]
[22] Wang H, Gould P L, Stwalley W C 1998 Phys. Rev. Lett. 80 476
[23] Ji Z H, Wu J Z, Ma J, Feng Z G, Zhang L J, Zhao Y T, Wang L R, Xiao L T, Jia S T 2010 Chin. Phys. Lett. 27 053701
[24] Caires A R L, Nascimento V A, Rezende D C J, Bagnato V S, Marcassa L G 2005 Phys. Rev. A 71 043403
[25] Gen T, Yan S B, Wang Y H, Yang H Q, Zhang T C, Wang J M 2005 Acta Phys. Sin. 54 5104 (in Chinese) [耿涛, 闫树斌, 王彦华, 杨海菁, 张天才, 王军民 2005 物理学报 54 5104)
[26] Chen Y Q, Yang X D 2005 Laser Spectroscopy Measurement Techniques (Shanghai: East China Normal University Press) p23 (in Chinese) [陈扬骎, 杨晓东 2005 激光光谱测量技术 (上海: 华东师范大学出版社) 第23页]
[27] Pan J S 2004 J. Appl. Opt. 25 25 (in Chinese) [潘京生 2004 应用光学 25 25]
[28] Wiza J L 1979 Nucl. Instrum. Methods 162 587
[29] Wang C J, Wu H B, Zhang J S, Fang L J 1992 J. Appl. Opt. 13 30 (in Chinese) [王长骏, 吴洪兵, 张继胜, 房利君 1992 应用光学 13 30]
[30] Bo C W 2005 M. D. Dissertation (Jilin: Changchun University of Science and Technology) (in Chinese) [薄春卫 2005 硕士学位论文 (吉林: 长春理工大学)]
[31] Kraft S D, Mikosch J, Staanum P, Deiglmayr J, Lange J, Fioretti A, Wester R, Weidemüller M 2007 Appl. Phys. B 89 453]
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[1] Bize S, Laurent P, Abgrall M, Marion H, Maksimovic I, Cacciapuoti L, Grünert J, Vian C, Pereira dos Santos F, Rosenbusch P, Lemonde P, Santarelli G, Wolf P, Clairon A, Luiten A, Tobar M, Salomon C 2005 J. Phys. B: At. Mol. Opt. Phys. 38 449
[2] Shin Y, Saba M, Pasquini T A, Ketterle W, Pritchard D E, Leanhardt A E 2004 Phys. Rev. Lett. 92 050405
[3] Weber T, Herbig J, Mark M, Nägerl H C, Grimm R 2003 Science 299 232
[4] Holland M, Burnett K, Gardiner C, Cirac J I, Zoller P 1996 Phys. Rev. A 54 1757
[5] Ospelkaus, Ni K K, Wang D, de Miranda M H G, Neyenhuis B, Quemener G, Julienne P S, Bohn J L, Jin D S, Ye J 2010 Science 327 853
[6] DeMille D 2002 Phys. Rev. Lett. 88 067901
[7] Inbar E, Mahal V, Arie A 1996 J. Opt. Soc. Am. B 13 1598
[8] Chapman M S, Ekstrom C R, Hammond T D, Rubenstein R A, Schmiedmayer J, Wehinger S, Pritchard D E 1995 Phys. Rev. Lett. 74 4783
[9] Bahns J T, Stwalley W C, Gould P L 1996 J. Chem. Phys. 104 9689
[10] Shuman E S, Barry J F, DeMille D 2010 Nature 467 820
[11] Doyle J M, Friedrich B, Kim J, Patterson D 1995 Phys. Rev. A 52 2515
[12] Bethlem H L, Berden G, Crompvoets F M H, Jongma R T, van Roij A J A, Meijer G 2000 Nature 406 491
[13] Chin C, Kerman A J, Vuletić V, Chu S 2003 Phys. Rev. Lett. 90 033201
[14] Jones K M, Tiesinga E, Lett P D, Julienne P S 2006 Rev. Mod. Phys. 78 483
[15] Stwalley W C, Wang H 1999 J. Mol. Spectrosc. 195 194
[16] Fioretti A, Comparat D, Crubellier A, Dulieu O, Seeuws F M, Pillet P 1998 Phys. Rev. Lett. 80 4402
[17] Lett P D, Helmerson K, Phillips W D, Ratliff L P, Rolston S L, Wagshul M E 1993 Phys. Rev. Lett. 71 2200
[18] Miller J D, Cline R A, Heinzen D J 1993 Phys. Rev. Lett. 71 2204
[19] Wang H, Gould P J, Stwalley W C 1996 Phys. Rev. A 53 1216
[20] Abraham E R I, Ritchie N W M, McAlexander W I, Hulet R G 1995 J. Chem. Phys. 103 7773
[21] Wang L R, Ma J, Zhang L J, Xiao L T, Jia S T 2007 Acta Phys. Sin. 56 6373 (in Chinese) [汪丽蓉, 马杰, 张临杰, 肖连团, 贾锁堂 2007 物理学报 56 6373]
[22] Wang H, Gould P L, Stwalley W C 1998 Phys. Rev. Lett. 80 476
[23] Ji Z H, Wu J Z, Ma J, Feng Z G, Zhang L J, Zhao Y T, Wang L R, Xiao L T, Jia S T 2010 Chin. Phys. Lett. 27 053701
[24] Caires A R L, Nascimento V A, Rezende D C J, Bagnato V S, Marcassa L G 2005 Phys. Rev. A 71 043403
[25] Gen T, Yan S B, Wang Y H, Yang H Q, Zhang T C, Wang J M 2005 Acta Phys. Sin. 54 5104 (in Chinese) [耿涛, 闫树斌, 王彦华, 杨海菁, 张天才, 王军民 2005 物理学报 54 5104)
[26] Chen Y Q, Yang X D 2005 Laser Spectroscopy Measurement Techniques (Shanghai: East China Normal University Press) p23 (in Chinese) [陈扬骎, 杨晓东 2005 激光光谱测量技术 (上海: 华东师范大学出版社) 第23页]
[27] Pan J S 2004 J. Appl. Opt. 25 25 (in Chinese) [潘京生 2004 应用光学 25 25]
[28] Wiza J L 1979 Nucl. Instrum. Methods 162 587
[29] Wang C J, Wu H B, Zhang J S, Fang L J 1992 J. Appl. Opt. 13 30 (in Chinese) [王长骏, 吴洪兵, 张继胜, 房利君 1992 应用光学 13 30]
[30] Bo C W 2005 M. D. Dissertation (Jilin: Changchun University of Science and Technology) (in Chinese) [薄春卫 2005 硕士学位论文 (吉林: 长春理工大学)]
[31] Kraft S D, Mikosch J, Staanum P, Deiglmayr J, Lange J, Fioretti A, Wester R, Weidemüller M 2007 Appl. Phys. B 89 453]
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