Momentum Spectroscopy for Multiple Ionization of Cold Rubidium in the Elliptically Polarized Laser Field  

作　　者：Junyang Yuan Yixuan Ma Renyuan Li Huanyu Ma Yizhu Zhang Difa Ye Zhenjie Shen Tianmin Yan Xincheng Wang Matthias Weidemüller Yuhai Jiang 袁俊阳;马祎璇;李任远;马欢玉;张逸竹;叶地发;沈镇捷;阎天民;王新成;Matthias Weidemüller;江玉海(Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210;University of Chinese Academy of Sciences,Beijing 100049;School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210;Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering,Key Laboratory of the Ministry of Education,Tianjin University,Tianjin 300072;Laboratory of Computational Physics,Institute of Applied Physics and Computational Mathematics,Beijing 100088;Hefei National Laboratory for Physical Sciences at the Microscale and Shanghai Branch,University of Science and Technology of China,Shanghai 201315;CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics,University of Science and Technology of China,Shanghai 201315;Physikalisches Institut,Universitat Heidelberg,Im Neuenheimer Feld 226,69120 Heidelberg,Germany)

机构地区：[1]Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210 [2]University of Chinese Academy of Sciences,Beijing 100049 [3]School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210 [4]Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering,Key Laboratory of the Ministry of Education,Tianjin University,Tianjin 300072 [5]Laboratory of Computational Physics,Institute of Applied Physics and Computational Mathematics,Beijing 100088 [6]Hefei National Laboratory for Physical Sciences at the Microscale and Shanghai Branch,University of Science and Technology of China,Shanghai 201315 [7]CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics,University of Science and Technology of China,Shanghai 201315 [8]Physikalisches Institut,Universitat Heidelberg,Im Neuenheimer Feld 226,69120 Heidelberg,Germany

出　　处：《Chinese Physics Letters》2020年第5期33-37,共5页中国物理快报（英文版）

基　　金：National Natural Science Foundation of China(Grant Nos.11827806;11874368;61675213;11822401;and11674034)。

摘　　要：Employing recently developed magneto-optical trap recoil ion momentum spectroscopy(MOTRIMS)combined with cold atoms,strong laser pulse,and ultrafast technologies,we study momentum distributions of the multiply ionized cold rubidium(Rb)induced by the elliptically polarized laser pulses(35 fs,1.3×10^15 W/cm^2).The complete vector momenta of Rb^n+ions up to charge state n=4 are recorded with extremely high resolution(0.12 a.u.for Rb^+).Variations of characteristic multi-bands are displayed in momentum distributions because the ellipticity varies from the linear to circular polarization,are interpreted qualitatively with the classical overbarrier ionization model.Present momentum spectroscopy of cold heavy alkali atoms presents novel strong-field phenomena beyond the noble gases.

关 键 词：POLARIZATION MOMENTUM ALKALI 

分 类 号：O562[理学—原子与分子物理] TN24[理学—物理]