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CO分子在线性极化飞秒激光场中的TDDFT研究

王志萍 朱云 吴鑫 吴亚敏

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CO分子在线性极化飞秒激光场中的TDDFT研究

王志萍, 朱云, 吴鑫, 吴亚敏

TDDFT studies on CO in a linear polarized femtosecond laser field

Wang Zhi-Ping, Zhu Yun, Wu Xin, Wu Ya-Min
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  • 本文运用将含时密度泛函理论和分子动力学非绝热耦合的方法,研究了CO分子在不同强度、不同极化方向的激光场中的电离和动力学行为. 研究发现,激光强度越强,CO分子吸收的能量越多,电离越早且电离越强,CO分子键长变长且伸缩振动越剧烈. 此外,CO分子偶极矩的变化及峰值也随着激光强度的增强而增大. 对激光极化方向的研究发现,激光极化方向沿着CO分子轴向时,分子的电离最强且伸缩振动最剧烈. 当激光极化角增大时,CO分子的电离逐渐被抑制且电子的偶极振动对激光极化方向表现出较强的依赖性. 此外研究还表明,CO分子碳原子和氧原子周围电子的弥散方式不同且与激光极化方向有关.
    We present a theoretical study on the ionization and excitation dynamics of CO in various linear-polarized laser fields with in the frame work of the time-dependent density functional theory (TDDFT), applied to valence electrons, coupled non-adiabatically with molecular dynamics of the ions. It is found that the stronger the laser intensity, the more the energies are absorbed by CO and the earlier the ionization takes place with more electrons emitted. Moreover, the bond length of CO is stretched associated with more violent contraction vibration. The dipole moment along the laser polarization is enlarged when the laser intensity is enhanced. This study on the influence of the polarization of laser pulse on the excitation of CO indicates that the ionization of CO is maximized and the contraction vibration becomes most violent when the laser is polarized along the molecular axis. Ionization is restrained when the polarization angle is increased and the dipole vibration shows a strong dependence on the laser polarization. Furthermore, it is found that the electron density surrounding the carbon atom is distributed along the molecular axis particularly when the dispersion of the electrons around the oxygen atom is greatly influenced by the laser polarization.
    • 基金项目: 国家自然科学基金(批准号:61178032)、中央高校基本科研业务费专项资金(批准号:JUSRP11A21)和江苏省高等教育学会“十一五”教育科学规划(批准号:JS053)资助的课题.
    • Funds: Project supported by the National Natural Science Foundation of China (Grant No. 61178032), the Fundamental Research Funds for the Central Universities (Grant No. 11A21), and the "Eleven Five" planning issues for higher education of Jiangsu province (Grant No. JS053).
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    Jia X Y, Fan D H, Li W D, Chen J 2013 China. Phys. B 22 013303

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    Blokland J H, Riedel J, Putzke S 2011 J. Chem. Phys. 135 114201

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    Li H, Ray D, De S, Znakovskaya I, Cao W, Laurent G, Wang Z, Kling M F, Le A T, Cocke C L 2011 Phys. Rev. A 84 043429

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    Wu J, Schmidt L P H, Kunitski M, Meckel M, Voss S, Sann H, Kim H, Jahnke T, Czasch A, Dörner R 2012 Phys. Rev. Lett. 108 183001

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    Liu Y Q, Liu X R, D Y K, Wu C Y, Jiang H B, Gong Q H 2011 Phys. Rev. Lett. 106 073004

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    [23]

    Fennel T, Meiwes-Broer K H, Tiggesbáumker J, Reinhard P G, Dinh P M, Suraud E 2003 Rev. Mod. Phys. 82 1793

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    Kohn W, Sham L J 1965 Phys. Rev. 140 A1133

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    Goedecker S, Teter M, Hutter J 1996 Phys. Rev. B 54 1703

    [26]

    Perdew J P, Wang Y 1992 Phys. Rev. B 45 13244

    [27]

    Legrand C, Suraud E, Reinhard P G 2002 J. Phys. B 35 1115

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  • [1]

    Liao Q, Lu P X, Lan P F, Cao W, Li Y H 2008 Phys. Rev. A 77 013408

    [2]

    Paulus G G, Lindner F, Walther H, Baltuska A, Goulielmakis E, Lezius M, Krausz F 2003 Phys. Rev. Lett. 91 253004

    [3]

    Fu Y Z, Zhao S F, Zhou X X 2012 China. Phys. B 21 113101

    [4]

    Zhou Y M, Liao Q, Zhang Q B, Hong W Y, Lu P Y 2010 Opt. Express 18 632

    [5]

    Saugout S, Cornaggia C 2006 Phys. Rev. A 73 041406

    [6]

    Lan P F, Lu P X, Li F, Li Y H, Yang Z Y 2008 Opt. Express 16 5868

    [7]

    Itatani J, Levesque J, Zeidler D, Niikura H, Pepin H, Kieffer J C, Corkum P B, Villeneuve D M 2004 Nature 432 867

    [8]

    Litvinyuk I V, Lee K F, Dooley P W, Rayner D M, Villeneuve D M, Corkum P B 2003 Phys. Rev. Lett. 90 233003

    [9]

    Seideman T 1995 J. Chem. Phys. 103 887

    [10]

    Bucksbaum P H, Zavriyev A, Muller H G, Schumacher D W 1990 Phys. Rev. Lett. 64 1883

    [11]

    Natan A, Lev U, Prabhudesai V S, Bruner B D, Strasser D, Schwalm D, Ben-Itzhak I, Heber O, Zajfman D, Silberberg Y 2012 Phys. Rev. A 86 043418

    [12]

    Stapelfeldt H, Seideman T 2003 Rev. Mod. Phys. 75 543

    [13]

    Itatani J, Levesque J, Zeidler D, Niikura H, Pépin H, Kieffer J C, Corkum P B, Villeneuve D M 2004 Nature 432 867

    [14]

    Jia X Y, Fan D H, Li W D, Chen J 2013 China. Phys. B 22 013303

    [15]

    Blokland J H, Riedel J, Putzke S 2011 J. Chem. Phys. 135 114201

    [16]

    De S, Znakovskaya I, Ray D, Anis F, JohnSon N G, Bocharova I A, Magrakvelidze M, Esry B D, Cocke C L, Litvinyuk I V, Kling M F 2009 Phys. Rev. Lett. 103 153002

    [17]

    Li H, Ray D, De S, Znakovskaya I, Cao W, Laurent G, Wang Z, Kling M F, Le A T, Cocke C L 2011 Phys. Rev. A 84 043429

    [18]

    Wu J, Schmidt L P H, Kunitski M, Meckel M, Voss S, Sann H, Kim H, Jahnke T, Czasch A, Dörner R 2012 Phys. Rev. Lett. 108 183001

    [19]

    Liu Y Q, Liu X R, D Y K, Wu C Y, Jiang H B, Gong Q H 2011 Phys. Rev. Lett. 106 073004

    [20]

    Huang Y X, Xu S W, Yang X H 2012 Acta Phys. Sin. 61 243701 (in Chinese) [黄云霞, 徐淑武, 杨晓华 2012 物理学报 61 243701]

    [21]

    Gross E K U, Kohn W 1990 Adv. Quant. Chem. 21 255

    [22]

    Calvayrac F, Reinhard P G, Suraud E, Ullrich C A 2000 Phys. Rep. 337 493

    [23]

    Fennel T, Meiwes-Broer K H, Tiggesbáumker J, Reinhard P G, Dinh P M, Suraud E 2003 Rev. Mod. Phys. 82 1793

    [24]

    Kohn W, Sham L J 1965 Phys. Rev. 140 A1133

    [25]

    Goedecker S, Teter M, Hutter J 1996 Phys. Rev. B 54 1703

    [26]

    Perdew J P, Wang Y 1992 Phys. Rev. B 45 13244

    [27]

    Legrand C, Suraud E, Reinhard P G 2002 J. Phys. B 35 1115

    [28]

    Faisal F H M 1987 Theory of Multiphoton Processes (New York: Plenum)

    [29]

    Becke A D, Edgecombe K E 1990 J. Chem. Phys. 92 5397

    [30]

    Bilalbegovié G 2008 Eur. Phys. J. D 49 43

    [31]

    Burnus T, Marques M A L, Gross E K U 2005 Phys. Rev. A 71 010501(R)

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出版历程
  • 收稿日期:  2013-07-30
  • 修回日期:  2013-09-10
  • 刊出日期:  2013-12-05

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