atom2015

International Workshop on ''Atomic Physics''

	Two-dimensional vibronic spectroscopy of coherent wave-packet motion
	Volker Engel
	Universität Würzburg
	Photon echo experiments use the interaction of three time-delayed laser pulses to induce a time-dependent polarization in a sample which then leads to the emission of radiation in a selected direction. Detecting a signal as a function of two times yields, upon Fourier-transformation, a two-dimensional (2D) spectrum. We present several examples for the 2D-spectroscopy of gas-phase molecules. In particular, the role of vibronic motion is addressed. References [1] A. Schubert, K. Renziehausen, V. Engel Mapping of quantum phases by two-dimensional vibronic spectroscopy of wave-packet revivals, Phys. Rev. A 82, 013419 (2010). [2] A. Schubert, V. Engel Two-dimensional vibronic spectroscopy of coherent wave-packet motion, J. Chem. Phys. 134, 104304 (2011). [3] J. Albert, A. Schubert, V. Engel Two-dimensional vibronic spectroscopy of molecular predissociation, New Journal of Physics, 15, 025008 (2013) [4] J. Albert, M. Falge, S. Gomez, I. R. Sola, H. Hildenbrand, V. Engel Vibrational and vibronic coherences in the two dimensional spectroscopy of coupled electron-nuclear motion, J. Chem. Phys. 143, 041102 (2015)