A wavelength-tunable few-cycle, millijoule-level short-wavelength infrared source for strong-field XAS/ATAS

Up to now, most strong-field experiments on atomic and molecular systems relied on a few-cycle source with a single center wavelength . Thus, experiments were often tailored to match the laser center wavelength and not vice versa. In addition, intense sources of pulses with center wavelengths exceeding the 800 nm region provided by conventional Titanium:Sapphire (Ti:Sa) technology have become very important. One reason is the demand for higher photon energies in the high-harmonic generation (HHG) process. There, short-wavelength infrared (SWIR) sources in the 1 to 2 µm spectral region are a key technology for soft x-ray HHG [1] .