Time-resolved four-wave-mixing spectroscopy for inner-valence transitions.

  title={Time-resolved four-wave-mixing spectroscopy for inner-valence transitions.},
  author={Thomas Ding and Christian Ott and Andreas Kaldun and Alexander Bl{\"a}ttermann and Kristina Meyer and Veit Stooss and Marc Rebholz and Paul Birk and Maximilian Hartmann and Andrew Brown and Hugo W van der Hart and T. Pfeifer},
  journal={Optics letters},
  volume={41 4},
Noncollinear four-wave-mixing (FWM) techniques at near-infrared (NIR), visible, and ultraviolet frequencies have been widely used to map vibrational and electronic couplings, typically in complex molecules. However, correlations between spatially localized inner-valence transitions among different sites of a molecule in the extreme ultraviolet (XUV) spectral range have not been observed yet. As an experimental step toward this goal, we perform time-resolved FWM spectroscopy with femtosecond NIR… CONTINUE READING