We study two-color high-order harmonic generation in Neon with 790nm and 1300nm driving laser fields and observe an extremeultraviolet continuum that extends to photon energies of 160eV. 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.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics