椭圆偏振激光脉冲驱动的氩原子非次序双电离

余本海; 李盈傧; 汤清彬

doi:10.7498/aps.61.203201

摘要

利用经典系综模型研究了椭圆偏振激光脉冲驱动的氩原子非次序双电离. 计算结果表明, 非次序双电离产率随着椭偏率的增大而减小; 双电离得到的电子对在激光偏振平面长轴方向的末态关联动量谱呈现正关联, 在激光偏振平面短轴方向的末态关联动量谱呈现反关联; Ar2+在激光偏振平面短轴方向的末态动量谱呈现单峰结构, 并且随着椭偏率增大而变宽. 轨迹分析显示, 椭圆偏振激光脉冲驱动下, 非次序双电离仍然是通过再碰撞而发生; 随着椭偏率的增大, 有效碰撞和单电离之间的时间延迟增加, 这是因为椭偏率较大时第一个电子需要经过多次往返才能与母核离子发生有效碰撞.

关键词:

Abstract

With elliptically polarized laser pulse, the nonsequential double ionization (NSDI) of argon atoms is investigated using fully classical ensemble. The results show that the yield of NSDI decreases with increase of the ellipticity, that the momentum spectrum of the correlated electron from double ionization events in the final state shows a correlated behavior along the long axis of the laser polarization plane and an anticorrelated behavior along the short axis of the laser polarization plane, and that the momentum spectrum distribution of Ar2+ ion exhibits a single-peak structure at the zero along the short axis of the laser polarization plane, which becomes broader with the increase of the ellipticity. Trajectory back analyses show that the happening of NSDI is still due to recollision, and that the delay time between the collision and the single ionization increases with ellipticity increasing, which is because that the first electron needs more trips shuttling back and forth, so that it can recollide with the parent ion under the more ellipticity.

Keywords:

作者及机构信息

1.
信阳师范学院物理电子工程学院, 信阳 464000

基金项目: 国家自然科学基金(批准号: 11005088, 11047145);河南省科技计划(批准号: 102300410241, 112300410021)和河南省教育厅自然科学研究计划(批准号: 2009A140006, 2011B140018)资助的课题.

Authors and contacts

1.
College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 11005088, 11047145), the Science and Technology Project of Henan Province, China (Grant Nos. 102300410241, 112300410021), and the Scientific Research Foundation of Education Department of Henan Province, China (Grant Nos. 2009A140006, 2011B140018).

参考文献

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[38]	Bhardwaj V R, Aseyev S A, Mehendale M, Yudin G L, Villeneuve D M, Rayner D M, Ivanov M Yu, Corkum P B 2001 Phys. Rev. Lett. 86 3522

施引文献

[1]	Voronov G S, Delone N B 1965 JETP Lett. 1 1
[2]	Liao Q, Zhou Y M, Huang C, Lu P X 2012 New J. Phys. 14 013001
[3]	Paulus G G, Grasbon F, Dreischuh A, Walther H, Kopold R, Becher W 2000 Phys. Rev. Lett. 84 3791
[4]	Liao Q, Lu P X, Lan P F, Cao W, Li Y H 2008 Phys. Rev. A 77 013408
[5]	Hong W Y, Lu P X, Lan P F, Zhang Q B, Wang X B 2009 Opt. Express 17 5139
[6]	Cao W, Lu P X, Lan P F, Wang X L, Li Y H 2007 Phys. Rev. A 75 063423 (R)
[7]	Lan P F, Lu P X, Cao W, Li Y H, Wang X L 2007 Phys. Rev. A 76 021801
[8]	Zhang Q B, Lan P F, Hong W Y, Liao Q, Yang Z Y, Lu P X 2009 Acta Phys. Sin. 58 4908 (in Chinese) [张庆斌, 兰鹏飞, 洪伟毅, 廖青, 杨振宇, 陆培祥 2009 58 4908]
[9]	Wang X, Eberly J H 2010 Phys. Rev. Lett. 105 083001
[10]	Huang C, Zhou Y M, Tong A H, Liao Q, Hong W Y, Lu P X 2011 Opt. Express 19 5627
[11]	Zhou Y M, Huang C, Liao Q, Hong W Y, Lu P X 2011 Opt. Lett. 36 2758
[12]	L'Huillier A, Lompre L A, Mainfray G, Manus C 1983 Phys. Rev. A 27 2503
[13]	Liu X, Rottke H, Eremina E, Sandner W, Goulielmakis E, Keeffe K O, Lezius M, Krausz F, Lindner F, Schatzel M G, Paulus G G, Walther H 2004 Phys. Rev. Lett. 93 263001
[14]	Zhou Y M, Huang C, Tong A H, Liao Q, Lu P X 2011 Opt. Express 19 2301
[15]	Walker B, Sheehy B, DiMauro L F, Agostini P, Schafer K J, Kulander K C 1994 Phys. Rev. Lett. 73 1227
[16]	Watson J B, Sanpera A, Lappas D G, Knight P L, Burnett K 1997 Phys. Rev. Lett. 78 1884
[17]	Weber T, Weckenbrock M, Staudte A, Spielberger L, Jagutzki O, Mergel V, Afaneh F, Urbasch G, Vollmer M, Giessen H, Dörner R 2000 Phys. Rev. Lett. 84 443
[18]	Zhou Y M, Liao Q, Lu P X 2009 Phys. Rev. A 80 023412
[19]	Weber T, Giessen H, Weckenbrock M, Urbasch G, Staudte A, Spielberger L, Jagutzki O, Mergel V, Vollmer M, Dorner R 2000 Nature 405 658
[20]	Liu Y Q, Tschuch S, Rudenko A, Dürr M, Siegel M, Morgner U, Moshammer R, Ullrich J 2008 Phys. Rev. Lett. 101 053001
[21]	Zhang D L, Tang Q B, Yu B H, Chen D 2011 Acta Phys. Sin. 60 053205 (in Chinese) [张东玲, 汤清彬, 余本海, 陈东 2011 60 053205]
[22]	Corkum P B 1993 Phys. Rev. Lett. 71 1994
[23]	Fittinghoff D N, Bolton P R, Chang B, Kulander K C 1994 Phys. Rev. A 49 2174
[24]	Dietrich P, Burnett N H, Ivanov M, Corkum P B 1994 Phys. Rev. A 50 R3585
[25]	Gillen G D, Walker M A, van Woerkom L D 2001 Phys. Rev. A 64 043413
[26]	Shvetsov-Shilovski N I, Goreslavski S P, Popruzhenko S V, Becker W 2008 Phys. Rev. A 77 063405
[27]	Hao X L, Wang G Q, Jia X Y, Li W D 2009 Phys. Rev. A 80 023408
[28]	Wang X, Eberly J H 2010 New J. Phys. 12 093047
[29]	Liao Q, Lu P X, Zhang Q B, Yang Z Y, Wang X B 2008 Opt. Express 16 17070
[30]	Zhou Y M, Huang C, Liao Q, Lu P X 2012 Phys. Rev. Lett. 109 053004
[31]	Tang Q B, Zhang D L, Li Y B, Yu B H 2011 Commun. Theor. Phys. 56 927
[32]	Zhou Y M, Liao Q, Lu P X 2010 Phys. Rev. A 82 053402
[33]	Haan S L, van Dyke J S, Smith Z S 2008 Phys. Rev. Lett. 101 113001
[34]	Tang Q B, Zhang D L, Yu B H, Chen D 2010 Acta Phys. Sin. 59 7775 (in Chinese) [汤清彬, 张东玲, 余本海, 陈东 2010 59 7775]
[35]	Zhou Y M, Liao Q, Lu P X 2010 Opt. Express 18 16025
[36]	Zhou Y M, Liao Q, Zhang Q B, Hong W Y, Lu P X 2011 Opt. Express 18 632
[37]	Huang C, Liao Q, Zhou Y M, Lu P X 2010 Opt. Express 18 14293
[38]	Bhardwaj V R, Aseyev S A, Mehendale M, Yudin G L, Villeneuve D M, Rayner D M, Ivanov M Yu, Corkum P B 2001 Phys. Rev. Lett. 86 3522

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