Berlin 2014 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 21: Photochemistry

MO 21.8: Vortrag

Freitag, 21. März 2014, 12:15–12:30, BEBEL HS213

A coherent-control study of 6-nitro BIPS — •Cristina Consani, Stefan Ruetzel, Patrick Nuernberger, and Tobias Brixner — Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg

We present a coherent-control study on the isomerizing merocyanine dye 6-nitro BIPS in liquid environment. This molecule has been extensively studied in our group by means of ultrafast transient absorption and two-dimensional (2D) electronic spectroscopy, unraveling the details of the photo-induced isomerization. Two-dimensional spectroscopy represents an example of how extended photochemical information can be retrieved by employing a modulated electric field as excitation pulse. Coherent control techniques are a natural extension of this concept. In our approach, the results of 2D spectroscopy are used as input for the control study. We investigate how systematic variation of the excitation field within restricted parametrization spaces can be used to address specific molecular processes, thus completing and extending the information obtained by third-order spectroscopies.