期刊
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
卷 36, 期 6, 页码 1594-1601出版社
OPTICAL SOC AMER
DOI: 10.1364/JOSAB.36.001594
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资金
- European Regional Development Fund (ERDF) [GINOP-2.3.6-15-2015-00001]
- Autoritatea Nationala pentru Cercetare Stiintifica (ANCS) [RO-CERN 03ELI (PROPW)]
- Vetenskapsradet (VR)
- H2020 European Research Council (ERC) [PALP 339253]
- Knut och Alice Wallenbergs Stiftelse
In this work, we numerically study a self-guiding process in which ionization plays a dominant role and analyze its effect on high-order harmonic generation (HHG) in gases. Although this type of self-guiding-termed plasma-core-induced self-guiding in previous works-limits the achievable cutoff by regulating the intensity of the laser beam, it provides favorable conditions for phase matching, which is indispensable for high-flux-gas highharmonic sources. To underline the role of self-guiding in efficient HHG, we investigate the time-dependent phase-matching conditions in the guided beam and show how the spatiotemporally constant fundamental intensity contributes to the constructive buildup of the harmonic field in a broad photon energy range up to the provided cutoff. (c) 2019 Optical Society of America
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