Enhanced soft X-ray high-harmonic generation driven by two-color (ω+3ω) mid-IR laser pulses

Abstract

We demonstrate the efficiency enhancement of soft X-ray high-harmonic generation from Ar in the range of 40–200 eV using two-color (ω+3ω) mid-infrared pulses with relative phase control, which is in qualitative agreement with 3D simulations. 

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