Coherent and incoherent dynamics of large molecules in solution studied on a 20 femtosecond time scale

Riedle, Eberhard ; Hasche, T.; Ashworth, Stephen; Woerner, M. und Elsaesser, T. (1996): Coherent and incoherent dynamics of large molecules in solution studied on a 20 femtosecond time scale. In: Springer Series in Chemical Physics, Bd. 62: S. 282-283

Abstract

Femtosecond pump-probe spectroscopy gives direct insight into the coherent dynamics of vibrational wavepacket motion [1] and subsequent vibronic relaxation processes [2] of organic molecules in solution. We have studied the ultrafast dynamics of dye molecules in temporally and spectrally resolved experiments on a 20 fs time scale. To separate the contributions from the ground and the excited states, a two-color scheme was employed. Blue pulses were used to excite a small fraction of the molecules to higher excited electronic states Sn (n >> 1) and the evolving dynamics was probed either with the red pulses tuned to the S0-S1 transition or directly with the blue pulses [3].

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• Sprache: Englisch