,The Probe Transmission Spectra of 87Rb in an Operating Magneto-Optical Trap in the Presence of an I

• 作 者: LIU Long-Wei JIA Feng-Dong RUAN Ya-Ping HUANG Wei LV Shuang-Fei XUE Ping XU Xiang-Yuan
• 机 构: School of Physics, University of Chinese Academy of Sciences, PO Box 4588, Beijing 100049“,”State Ke
• 出 处: 中国物理快报（英文版）
• 发表日期: 2013年4期

Cold atoms produced by a magneto-optical trap (MOT)[1] provide great opportunities for studies of precise spectroscopic measurements and quantum coherent phenomena such as Autler-Townes splitting and electromagnetically induced transparency (EIT)due to significantly reduced Doppler broadening,a low collision rate and long interaction time.[2] Experimentally,the cw pump-probe spectra around the D2 cycling transition for Cs atoms and Rb atoms confined in an MOT have been extensively studied.As for caesium atoms,the cw pump-probe spectra over 6 2S1/2,F =4 → 6 2P3/2,F =5 have been measured,[3-5] and two other groups have measured the whole three hyperfine transitions 6 2S1/2,F =4 →62p3/2,F =3,4 and 5.[6,7] As for rubidium atoms,the cw pump-probe spectra around 5 2S1/2,F =3 →52P3/2,F =4 are measured for 85Rb atoms[8] and the spectra around 52S1/2,F =2 → 52P3/2,F =3for 87Rb atoms are measured in Refs.[9-11],while the whole three hyperfine transitions 52S1/2,F =3 → 5 2P3/2,F =2,3 and 4 for 85Rb atoms[12] and 52S1/2,F =2 → 52P3/2,F =1,2 and 3 for 87Rb atoms[13] are measured.In these measurements,the repumping beams and the magnetic field of the MOT are generally kept at all times.Most groups have measured the pump-probe spectra in the presence of the cooling/trapping beams,[3-5,7-10,12,13] i.e.,the cooling/trapping beams play the role of pump beams simultaneously.