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相对论质量修正效应对超高次谐波的影响
  • ISSN号：1000-3290
  • 期刊名称：Acta Physica Sinica
  • 时间：2012.5.5
  • 页码：173202-1-
  • 分类：O412.1[理学—理论物理;理学—物理]
  • 作者机构：[1]吉林大学原子与分子物理研究所,长春130012, [2]台州学院物理与电子工程学院物理与材料工程系,台州318000, [3]北京应用物理与计算数学研究所计算物理重点实验室,北京100088
  • 相关基金：国家自然科学基金（批准号：10904006,11034003,11105015,11075023）,浙江省自然科学基金（批准号：Y6110578）和中国工程物理研究院科学技术发展基金（批准号：201180102026,2011A0102007）的资助课题
  • 相关项目：含时量子研究激光等离子体中原子结构和辐射性质
作者： 郭福明，陈基根， 杨玉军，曾思良|
关键词： 高次谐波, 相对论质量修正效应, 含时Dirac方程, high harmonic generation, relativistic mass-shift, time-dependent Dirac equation
中文摘要：

通过分别求解含时狄拉克方程和含时薛定谔方程，研究了一维模型原子在相对论超强激光脉冲作用下的超高次谐波发射过程．研究结果表明：在弱场强条件下，相对论的模拟结果可以退化到非相对论的结果；随着场强的增强，可以逐渐观察到明显的相对论质量修正效应．此外，根据发展的相对论的“三步”模型并结合小波时频分析方法，分析了谐波平台的截止位置和发射效率．

英文摘要：

By solving the time-dependent Dirac and Schr6dinger equations, we investigate the super high-order harmomc generation （HHG） from a one-dimensional model atom in a relativistic intense laser pulse. Our numerical simulations show that the relativistic results can be degraded to non-relativistic ones in the weak laser field, and the clear effect of the relativistic mass-shift can be gradually observed as the increase of the laser field intensity. Furthermore, the cutoff frequency and the emission efficiency of the HHG spectrum are analyzed by the wavelet time-frequency analysis and the relativistic ＂three-step＂ model.

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期刊信息
  • 《物理学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国物理学会 中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京603信箱(中国科学院物理研究所)
  • 邮编：100190
  • 邮箱：apsoffice@iphy.ac.cn
  • 电话：010-82649026
  • 国际标准刊号：ISSN：1000-3290
  • 国内统一刊号：ISSN：11-1958/O4
  • 邮发代号:2-425
  • 获奖情况:
  • 1999年首届国家期刊奖,2000年中科院优秀期刊特等奖,2001年科技期刊最高方阵队双高期刊居中国期刊第12位
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  • 被引量:49876