TDDFT studies on CO in a linear polarized femtosecond laser field

Wang Zhi-Ping; Zhu Yun; Wu Xin; Wu Ya-Min

doi:10.7498/aps.62.233102

Abstract

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.

Keywords:

Authors and contacts

1.
School of Science, JiangNan University, Wuxi 214122, China
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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[22]	Calvayrac F, Reinhard P G, Suraud E, Ullrich C A 2000 Phys. Rep. 337 493
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[26]	Perdew J P, Wang Y 1992 Phys. Rev. B 45 13244
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[28]	Faisal F H M 1987 Theory of Multiphoton Processes (New York: Plenum)
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Cited By

[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 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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Vol. 62, Issue 23 - 2013-12-05

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