Research Article Focusing Properties of High-Order Harmonics
作者机构：Department of PhysicsLund UniversityP.O.Box 11822100 LundSweden Universitéde BordeauxCNRSCEACentre Laser Intenses et Applications(CELIA)43 Rue P.Noailles33400 TalenceFrance Univ LyonUniv Claude Bernard Lyon 1CNRSInstitut Lumière MatièreF-69622 VilleurbanneFrance ASML ResearchASML Netherlands B.V.5504 DR VeldhovenNetherlands
出 版 物：《Ultrafast Science》 (超快科学（英文）)
年 卷 期：2021年第1期
页 面：31-38页
学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学]
基 金：support from the Swedish Research Council,the European Research Council(advanced grant QPAP) the Knut and Alice Wallenberg Foundation,and the Crafoord Foundation.The research leading to these results has received funding from LASERLAB-EUROPE(grant agreement no.654148,European Union’s Horizon 2020 research and innovation programme) S.M.acknowledges financial support from the COST Action CA18212-Molecular Dynamics in the GAS phase(MD-GAS) supported by COST(European Cooperation in Science and Technology)
主 题：harmonic harmonics geometry
摘 要：Many applications of the extreme ultraviolet(XUV)radiation obtained by high-order harmonic generation(HHG)in gases require a small focus area in order to enable attosecond pulses to reach a high ***,high-order harmonics generated in Ar with a multiterawatt laser system in a loose focusing geometry are focused to a few micrometers using two toroidal mirrors in a Wolter configuration with a high demagnification *** a knife-edge measurement technique,we determine the position and size of the XUV foci as a function of harmonic *** show that the focus properties vary with harmonic order and the generation ***,based on a classical description of the harmonic dipole phase and assuming that the individual harmonics can be described as Gaussian beams,reproduce the experimental *** discuss how the generation geometry affects the intensity and duration of the focused attosecond pulses.
维普期刊数据库