Attosecond pulse walk-off in high-order harmonic generation

被引：11
|
作者：
Kroon, D. [1 ]
Guenot, D. [1 ]
Kotur, M. [1 ]
Balogh, E. [2 ]
Larsen, E. W. [1 ]
Heyl, C. M. [1 ]
Miranda, M. [1 ]
Gisselbrecht, M. [1 ]
Mauritsson, J. [1 ]
Johnsson, P. [1 ]
Varju, K. [2 ]
L'Huillier, A. [1 ]
Arnold, C. L. [1 ]
机构：
[1] Lund Univ, Dept Phys, S-22100 Lund, Sweden
[2] Univ Szeged, Dept Opt & Quantum Elect, H-6720 Szeged, Hungary
来源：
OPTICS LETTERS | 2014年 / 39卷 / 07期
基金：
匈牙利科学研究基金会; 欧洲研究理事会; 瑞典研究理事会;
关键词：
IONIZATION;
D O I：
10.1364/OL.39.002218
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study the influence of the generation conditions on the group delay of attosecond pulses in high-order harmonic generation in gases. The group delay relative to the fundamental field is found to decrease with increasing gas pressure in the generation cell, reflecting a temporal walk-off due to the dispersive properties of the nonlinear medium. This effect is well reproduced using an on-axis phase-matching model of high-order harmonic generation in an absorbing gas. (C) 2014 Optical Society of America
引用
收藏
页码：2218 / 2221
页数：4
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