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

Bernd SchütteMax-Born-Institut, Max-Born-Strasse 2A, 12489 Berlin, GermanyP. WeberMax-Born-Institut, Max-Born-Strasse 2A, 12489 Berlin, GermanyKatalin KovácsDepartment of Optics and Quantum Electronics, University of Szeged, Szeged, HungaryEmeric BaloghDepartment of Optics and Quantum Electronics, University of Szeged, Szeged, HungaryBalázs MajorDepartment of Optics and Quantum Electronics, University of Szeged, Szeged, HungaryV. ToşaELI-ALPS, ELI-Hu Nkft, Szeged 6720, HungarySong‐Hee HanMax-Born-Institut, Max-Born-Strasse 2A, 12489 Berlin, GermanyMarc J. J. VrakkingMax-Born-Institut, Max-Born-Strasse 2A, 12489 Berlin, GermanyKatalin VarjúDepartment of Optics and Quantum Electronics, University of Szeged, Szeged, HungaryArnaud RouzéeMax-Born-Institut, Max-Born-Strasse 2A, 12489 Berlin, Germany

2015en

ABI

Annotatsiya

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.

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Identifikatorlar

DOI: 10.1364/oe.23.033947

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