Quasi-phase-matching of high-order harmonics in plasma plumes: theory and experiment

被引：18

作者：

Strelkov, V. V. ^{[1
,2
]}

Ganeev, R. A. ^{[3
,4
]}

机构：

[1] AM Prokhorov Gen Phys Inst, Vavilova St 38, Moscow 119991, Russia

[2] State Univ, Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia

[3] Voronezh State Univ, 1 Univ Sq, Voronezh 394006, Russia

[4] Saitama Med Univ, 38 Morohongo,Moroyama Machi, Saitama 3500495, Japan

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 18期

基金：

俄罗斯科学基金会;

关键词：

GENERATION;

D O I：

10.1364/OE.25.021068

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We theoretically analyze the phase-matching of high-order harmonic generation (HHG) in multi-jet plasmas and find the harmonic orders for which the quasi-phase-matching (QPM) is achieved depending on the parameters of the plasma and the generating beam. HHG by single-and two-color generating fields is analyzed. The QMP is studied experimentally for silver, indium and manganese plasmas using near IR and mid-IR laser fields. The theory is validated by comparison with our experimental observations, as well as published experimental data. In particular, the plasma densities and the harmonic phase coefficients reconstructed from the observed harmonic spectra using our theory agree with the corresponding parameters found using other methods. Our theory allows defining the plasma jet and the generating field properties, which can maximize the HHG efficiency due to QPM. (C) 2017 Optical Society of America

引用

页码：21068 / 21083

页数：16

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