Direct observation of the coherent nuclear response after the absorption of a photon.

@article{Liebel2014DirectOO,
  title={Direct observation of the coherent nuclear response after the absorption of a photon.},
  author={M Liebel and Christoph Schnedermann and Giovanni Bassolino and Greg Taylor and Anthony Watts and Philipp Kukura},
  journal={Physical review letters},
  year={2014},
  volume={112 23},
  pages={238301}
}
How molecules convert light energy to perform a specific transformation is a fundamental question in photophysics. Ultrafast spectroscopy reveals the kinetics associated with electronic energy flow, but little is known about how absorbed photon energy drives nuclear motion. Here we used ultrabroadband transient absorption spectroscopy to monitor coherent vibrational energy flow after photoexcitation of the retinal chromophore. In the proton pump bacteriorhodopsin, we observed coherent… CONTINUE READING