Nonlinear propagation effect in x-ray parametric amplification during high harmonic generation

被引：2
|
作者：
Seres, J. [1 ]
Seres, E. [1 ]
Serrat, C. [2 ]
Dinh, T. H. [3 ]
Hasegawa, N. [3 ]
Ishino, M. [3 ]
Nishikino, M. [3 ]
Nakano, K. [4 ]
Namba, S. [4 ]
机构：
[1] Vienna Univ Technol, Inst Atom & Subat Phys, E-141,Stad 2, A-1020 Vienna, Austria
[2] Univ Politecn Cataluna, Dept Phys, Colom 11, Barcelona 08222, Spain
[3] Natl Inst Quantum Sci & Technol QST, Kansai Photon Sci Inst, Kyoto 6190215, Japan
[4] Hiroshima Univ, Grad Sch Adv Sci & Engn, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima 7398527, Japan
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2022年 / 39卷 / 04期
基金：
欧盟地平线“2020”; 日本学术振兴会;
关键词：
COHERENT; LASER; SCATTERING; IONIZATION; NM;
D O I：
10.1364/JOSAB.454902
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the realization and characterization of parametric amplification in high harmonic generation around 100 eV using He gas in a double gas jet arrangement. The delay of the seed extreme ultraviolet (XUV) pulse with respect to the amplifier gas jet was scanned by changing the distance between the gas jets. Experiments and numerical calculations show that parametric amplification occurs within a temporal window of several optical cycles. Strong correlation between the seed and amplifier was observed in a shorter, few optical cycles delay range, which appeared as a modulation of the XUV intensity with an unexpected one optical cycle periodicity instead of half optical cycle. Simulations revealed that the strong correlation and also the unusual periodicity was the consequence of the nonlinear effect produced by plasma dispersion on the parametric amplification process during propagation in the amplifier jet. (C) 2022 Optica Publishing Group
引用
收藏
页码：1263 / 1271
页数：9
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