华东师范大学学报（自然科学版） >

2020 , Vol. 2020 >Issue 2: 55 - 63

DOI: https://doi.org/10.3969/j.issn.1000-5641.201922010

物理学与电子学

反向旋转圆偏振双色激光场驱动下氩原子非顺序双电离研究

  • 钱丽洁 ,
  • 杨岩 ,
  • 孙真荣
展开
  • 华东师范大学 精密光谱科学与技术国家重点实验室, 上海　200062

收稿日期: 2019-04-23

  网络出版日期: 2020-03-16

基金资助

国家自然科学基金（11727810）；上海市科委国际科技合作项目（16520721200）

收起

Non-sequential double ionization of argon in counterrotating circularly polarized two-color laser fields

  • QIAN Lijie ,
  • YANG Yan ,
  • SUN Zhenrong
Expand
  • State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai　200062, China

Received date: 2019-04-23

  Online published: 2020-03-16

Fold

摘要

在经典系综模型下, 研究了氩(Argon, Ar)原子在800 nm和400 nm反向旋转圆偏振双色(Counterrotating Circularly Polarized Two-Color, CRTC)激光场驱动下的非顺序双电离(Non-Sequential Double Ionization, NSDI)过程. 理论分析了激光强度、双色场强度比、脉冲相对相位, 以及激光脉冲宽度等光场参数对非顺序双电离机制及其量子产率的影响, 得到了双电子能量的时间演化谱; 发现并分析了两种不同的非顺序双电离机制; 讨论了电子返回碰撞能对不同非顺序双电离过程的影响.

关键词： 非顺序双电离; 双色激光场; 经典系综模型; 电子碰撞; 多电子动力学

本文引用格式

钱丽洁 , 杨岩 , 孙真荣 . 反向旋转圆偏振双色激光场驱动下氩原子非顺序双电离研究[J]. 华东师范大学学报（自然科学版）, 2020 , 2020(2) : 55 -63 . DOI: 10.3969/j.issn.1000-5641.201922010

Abstract

In this paper, the non-sequential double ionization (NSDI) process of Ar in 800 nm and 400 nm counterrotating circularly polarized two-color(CRTC) laser fields was studied using the classical ensemble model. The dependence of the non-sequential double ionization mechanism and quantum yield on laser intensity, laser intensity ratio, relative phase, and pulse duration of two pulses is calculated and analyzed in detail. The energy evolution of two electrons in the time domain is obtained and two different non-sequential double ionization mechanisms are revealed. The influence of the electron collision energy for different non-sequential double ionization processes is also discussed.

Key words： non-sequential double ionization(NSDI); two-color laser fields; classical ensemble model; electron collision; multi-electron dynamics

参考文献

[1] FITTINGOFF D N, BOLTON P R, CHANG B, et al. Observation of nonsequential double ionization of Helium with optical tunneling[J]. Physical Review Letters, 1992, 69(18):2642-2645. DOI:10.1103/PhysRevLett.69.2642.
[2] WALKER B, SHEEHY B, DIMAURO L F, et al. Precision measurement of strong field double ionization of Helium[J]. Physical Review Letters, 1994, 73(9):1227-1230. DOI:10.1103/PhysRevLett.73.1227.
[3] LI H Y, WANG B B, CHEN J, et al. Effects of a static electric field on nonsequential double ionization[J]. Physical Review A, 2007, 76(3):033405. DOI:10.1103/PhysRevA.76.033405.
[4] AGOSTINI P, FABRE F, MAINFRAY G, et al. Free-free transitions following six-photon ionization of Xenon atoms[J]. Physical Review Letters, 1979, 42(17):1127-1130. DOI:10.1103/PhysRevLett.42.1127.
[5] KRAUSZ F, IVANOV M. Attosecond physics[J]. Reviews of Modern Physics, 2009, 81:163-234. DOI:10.1103/RevModPhys.81.163.
[6] CORKUM P B. Plasma perspective on strong-field multiphoton ionization[J]. Physical Review Letters, 1993, 71(13):1994-1997. DOI:10.1103/PhysRevLett.71.1994.
[7] HAO X L, WANG G Q, JIA X Y, et al. Nonsequential double ionization of Ne in an elliptically polarized intense laser field[J]. Physical Review A, 2009, 80(2):023408. DOI:10.1103/PhysRevA.80.023408.
[8] DIETRICH P, BURNETT N H, IVANOV M, et al. High-harmonic generation and correlated two-electron multiphoton ionization with elliptically polarized light[J]. Physical Review A, 1994, 50(5):3585-3588. DOI:10.1103/PhysRevA.50.R3585.
[9] MANCUSO C A, HICKSTEIN D D, GRYCHTOL P, et al. Strong-field ionization with two-color circularly polarized laser fields[J]. Physical Review A, 2015, 91(3):031402. DOI:10.1103/PhysRevA.91.031402.
[10] MANCUSO C A, HICKSTEIN D D, DORNEY K M. Controlling electron-ion rescattering in two-color circularly polarized femtosecond laser fields[J]. Physical Review A, 2016, 93(5):053406. DOI:10.1103/PhysRevA.93.053406.
[11] CHALOUPKA J L, HICKSTEIN D D. Dynamics of strong-field double ionization in two-color counterrotating fields[J]. Physical Review Letters, 2016, 116(14):143005. DOI:10.1103/PhysRevLett.116.143005.
[12] ECKART S, RICHTER M, KUNITSKI M, et al. Nonsequential double ionization by counterrotating circularly polarized two-color laser fields[J]. Physical Review Letters, 2016, 117(13):133202. DOI:10.1103/PhysRevLett.117.133202.
[13] MA X M, ZHOU Y M, CHEN Y B, et al. Timing the release of the correlated electrons in strong-field nonsequential double ionization by circularly polarized two-color laser fields[J]. Optics xpress, 2019, 27(3):1825-1837. DOI:10.1364/OE.27.001825.
[14] MANCUSO C A, DORNEY K M, HICKSTEIN D D, et al. Controlling nonsequential double ionization in two-color circularly polarized femtosecond laser fields[J]. Physical Review Letters, 2016, 117(13):133201. DOI:10.1103/PhysRevLett.117.133201.
[15] ECKART S, KUNITSKI M, RICHTER M. Subcycle interference upon tunnel ionization by counter-rotating two-color fields[J]. Physical Review A, 2018, 97(4):041402. DOI:10.1103/PhysRevA.97.041402.
[16] LIN K, JIA X Y, YU Z Q, et al. Comparison study of strong-field ionization of molecules and atoms by bicircular two-color femtosecond laser pulses[J]. Physical Review Letters, 2017, 119(20):203202. DOI:10.1103/PhysRevLett.119.203202.
[17] WANG X, EBERLY J H. Classical theory of high-field atomic ionization using elliptical polarization[J]. Physical Review A, 2012, 86(1):013421. DOI:10.1103/PhysRevA.86.013421.
Options
文章导航

/

〈 〉