Development of a high-flux XUV source based on high-order harmonic generation

被引：8
作者：
Nefedova, V. E. [1 ,2 ]
Albrecht, M. [1 ,2 ]
Kozlova, M. [1 ,3 ]
Nejdl, J. [1 ,3 ]
机构：
[1] AS CR, Inst Phys, ELI Beamlines Project, Slovance 2, Prague 18221 8, Czech Republic
[2] CTU, Fac Nucl Sci & Phys Engn, Brehova 7, Prague 11519 1, Czech Republic
[3] AS CR, Inst Plasma Phys, Slovankou 3, Prague 18200 8, Czech Republic
来源：
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 2017年 / 220卷
关键词：
High harmonic generation; HHG; Laser; XUV radiation; Phase-matching; Conversion efficiency; OPTIMIZATION;
D O I：
10.1016/j.elspec.2017.01.010
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
An experimental study of the scaling laws for optimal driving conditions and output properties of the beam generated through high-order harmonic generation on the f-number of laser focusing is presented. Alteration of experimental parameters for focal lengths from 0.3 to 5 m, in optimal conditions for phase matching (in terms of driving laser intensity, gas cell length and gas pressure) was carried out, enabling the experimental verification of the scaling laws for output parameters, such as XUV pulse energy, conversion efficiency and divergence of the harmonic beam. In order to improve the yield of the harmonic signal, allowing the source to become convenient for applications that require pulses with high photon numbers, a loose focusing geometry with high peak-power driver pulses was implemented. A high harmonic beam with energy up to 40 nJ per pulse was generated in Ar with a focal length of 5 m. Application of the scaling laws verified within this study allows the estimation of parameters for a future high harmonic source that is being implemented at ELI Beamlines facility. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：9 / 13
页数：5
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