Bright attosecond soft X-ray pulse trains by transient phase-matching in two-color high-order harmonic generation

We study two-color high-order harmonic generation in Neon with 790 nm and 1300 nm driving laser fields and observe an extreme-ultraviolet continuum that extends to photon energies of 160 eV. Using a 6-mm-long, high pressure gas cell, we optimize the HHG yield at high photon energies and investigate...

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Bibliographic Details
Published in:Optics express 2015-12, Vol.23 (26), p.33947-33955
Main Authors: Schütte, Bernd, Weber, Paul, Kovács, Katalin, Balogh, Emeric, Major, Balázs, Tosa, Valer, Han, Songhee, Vrakking, Marc J J, Varjú, Katalin, Rouzée, Arnaud
Format: Article
Language:English
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Summary:We study two-color high-order harmonic generation in Neon with 790 nm and 1300 nm driving laser fields and observe an extreme-ultraviolet continuum that extends to photon energies of 160 eV. Using a 6-mm-long, high pressure gas cell, we optimize the HHG yield at high photon energies and investigate the effect of ionization and propagation under phase-matching conditions that allow us to control the temporal structure of the XUV emission. Numerical simulations that include the 3D propagation of the two-color laser pulse show that a bright isolated attosecond pulse with exceptionally high photon energies can be generated in our experimental conditions due to an efficient hybrid optical and phase-matching gating mechanism.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.23.033947