Analysis of nonlinear self-interaction of femtosecond pulses during high-order harmonic generation in laser-produced plasma

被引：25

作者：

Ganeev, Rashid A. ^{[1
]}

Baba, Motoyoshi ^{[1
]}

Suzuki, Masayuki ^{[1
]}

Kuroda, Hiroto ^{[1
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2006年 / 23卷 / 07期

关键词：

12;

D O I：

10.1364/JOSAB.23.001332

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present the z-scan studies of low-excited laser plasma showing a self-interaction of a femtosecond beam during the high-order harmonic generation in the laser plumes produced on the surfaces of different targets. This process was attributed to the ionization of neutrals and singly charged ions at the leading part of the laser pulse with further self-defocusing caused by the free electrons. The spatial distribution of the radiation propagating through the plasma showed an appearance of a ringlike shape at the intensities exceeding the barrier suppression intensity for singly charged ions. We show that this process leads to the restriction of the cutoff energy of high harmonics and the conversion efficiency from laser plasma. (c) 2006 Optical Society of America

引用

页码：1332 / 1337

页数：6

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