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Proceedings Paper

Elucidating photodynamics with ultrafast pulse sequences: pump-repump, multidimensional spectroscopy, and beyond
Author(s): Patrick Nuernberger; Stefan Ruetzel; Tobias Brixner
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Paper Abstract

We demonstrate how diverse femtosecond spectroscopy approaches coalesce to a comprehensive understanding of photochemical reaction pathways, exemplarily for the ring-open isomers of merocyanine compounds. Pump-probe transient absorption spectroscopy discloses photo-induced ring closure, whereas coherent two-dimensional (2D) electronic spectra directly visualize whether there is photoisomerization. We further introduce coherent triggered-exchange 2D electronic spectroscopy, a versatile tool for analyzing excited states and associated reaction pathways, with the information from where the reaction started intrinsically preserved. Beyond that, third-order three-dimensional spectroscopy provides an intuitive picture for which reactants can be turned into which products, additionally exposing the reactive molecular modes connecting them.

Paper Details

Date Published: 14 March 2015
PDF: 11 pages
Proc. SPIE 9361, Ultrafast Phenomena and Nanophotonics XIX, 936108 (14 March 2015); doi: 10.1117/12.2075452
Show Author Affiliations
Patrick Nuernberger, Univ. Würzburg (Germany)
Ruhr-Univ. Bochum (Germany)
Stefan Ruetzel, Univ. Würzburg (Germany)
Tobias Brixner, Univ. Würzburg (Germany)

Published in SPIE Proceedings Vol. 9361:
Ultrafast Phenomena and Nanophotonics XIX
Markus Betz; Abdulhakem Y. Elezzabi; Kong-Thon Tsen, Editor(s)

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