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"Novel Detection Scheme for Application in Pump-Repump-Probe Spectroscopy" S. Draxler, T. Brust, J. Eicher, W. Zinth, M. BraunOptics Communications 283 (2010) 1050-1054 Abstract: A novel detection scheme for pump-repump-probe spectroscopy is presented, where the use of modulation and referencing allows to record the efficiency of a photochemical reaction as a function of the pump-repump delay in a single measurement. This new technique is applied to investigate the ring-opening reaction of an indolylfulgide after pre-excitation. Here the reaction efficiency doubles, when the excitation pulse is very close to the pre-excitation pulse, and the improvement of the efficiency decays with increasing pump-repump delay on the time scale of about 5 ps. BMO authors (in alphabetic order): Markus Braun Thomas Brust Simone Draxler Jonas Eicher Wolfgang Zinth  WWW-Version |