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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 extremeultraviolet 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 ofdoi:10.1364/oe.23.033947 pmid:26832053 fatcat:pijxwnzctjd7pnhdw3y4osqi4m