Effect of plasma-core-induced self-guiding on phase matching of high-order harmonic generation in gases

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 "plasmacore- 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.

Kovács, KatalinNational Institute for Research and Development of Isotopic and Molecular Technologies Cluj-Napoca (författare)
Tosa, ValerNational Institute for Research and Development of Isotopic and Molecular Technologies Cluj-Napoca (författare)
Rudawski, PiotrLund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)fysi-prr (författare)
L'Huillier, AnneLund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)fysi-alh (författare)
Varjú, KatalinELI-HU Non-profit Ltd,University of Szeged(Swepub:lu)fysi-kva (författare)
University of SzegedELI-HU Non-profit Ltd (creator_code:org_t)

Ingår i:Journal of the Optical Society of America B: Optical Physics36:6, s. 1594-16010740-3224

Av författaren/redakt...: Major, Balázs; Kovács, Katalin; Tosa, Valer; Rudawski, Piotr; L'Huillier, Anne; Varjú, Katalin

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