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Heidelberg 2015 – scientific programme

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MO: Fachverband Molekülphysik

MO 21: Posters 4: Novelties in Molecular Physics

MO 21.3: Poster

Thursday, March 26, 2015, 17:00–19:00, C/Foyer

Collinear two-dimensional spectroscopy with shot-to-shot phase cycling — •Sebastian Roeding1, Simon Draeger1, Andreas Steinbacher1, Patrick Nuernberger1,2, and Tobias Brixner11Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg — 2Physikalische Chemie II, Ruhr-Universität Bochum, 44780 Bochum

Experimental setups to perform two-dimensional electronic spectroscopy are typically based on coherently emitted optical signals in the phase-matching direction [1]. In contrast, the detection of incoherent signals allows the investigation of molecules in different environments, e.g. by fluorescence detection in the liquid phase [2] or by photocurrent measurement in the solid state [3]. In order to discriminate the different signal contributions phase-cycling [4] needs to be applied.

We introduce a novel setup which utilizes an AOPDF pulse shaper (Dazzler, Fastlite) to generate multi-pulse sequences in a collinear beam arrangement. The AOPDF allows the variation of the interpulse delays and their relative phases with 1 kHz rate, enabling a rapid scan and shot-to-shot phase cycling. The pulse shaper output can be guided to separate experiments which permits the investigation of molecules in different environments.
Brixner et al, Nature 434, 625 (2005)
Tekavec et al., J. Chem. Phys. 127, 214307 (2007)
Aeschlimann et al., Science 333, 6050 ( 2011)
Tian et al., Science 300, 1553 (2003)

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