Elucidating photodynamics with ultrafast pulse sequences: pump-repump, multidimensional spectroscopy, and beyond

Patrick Nuernberger; Stefan Ruetzel; Tobias Brixner

doi:10.1117/12.2075452

14 March 2015 Elucidating photodynamics with ultrafast pulse sequences: pump-repump, multidimensional spectroscopy, and beyond

Patrick Nuernberger, Stefan Ruetzel, Tobias Brixner

Author Affiliations +

Proceedings Volume 9361, Ultrafast Phenomena and Nanophotonics XIX; 936108 (2015) https://doi.org/10.1117/12.2075452
Event: SPIE OPTO, 2015, San Francisco, California, United States

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.

Citation Download Citation

Patrick Nuernberger, Stefan Ruetzel, and Tobias Brixner "Elucidating photodynamics with ultrafast pulse sequences: pump-repump, multidimensional spectroscopy, and beyond", Proc. SPIE 9361, Ultrafast Phenomena and Nanophotonics XIX, 936108 (14 March 2015); https://doi.org/10.1117/12.2075452

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