Erlangen 2018 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
Q: Fachverband Quantenoptik und Photonik
Q 65: Nano-Optics and Biophotonics
Q 65.2: Talk
Friday, March 9, 2018, 10:45–11:00, K 0.023
Coherent 2D fluorescence micro-spectroscopy — •Donghai Li1, Sebastian Götz1, Tobias Brixner1,4, Verena Kolb2, and Jens Pflaum2,3 — 1Institute for Physical and Theoretical Chemistry, University of Würzburg, 97074 Würzburg — 2Experimental Physics VI, University of Würzburg, 97074 Würzburg — 3Bavarian Center for Applied Energy Research (ZAE Bayern), Magdalene-Schoch-Str. 3, 97074 Würzburg — 4Center for Nanosystems Chemistry (CNC), Theodor-Boveri-Weg, 97074 Würzburg
It is important to explore the relation between the microscopic morphology of the materials and their intrinsic ultrafast energy transfer processes. However, traditional ultrafast spectroscopy techniques provide only spatially averaged optical information. In order to study ultrafast processes on nanoscale, we combine femtosecond 2D spectroscopy with high NA microscopy. These functionalities are implemented by pairing fluorescence microscopy with phase and amplitude pulse shaping of few-cycle NIR pulses. The pulse shaper enables us not only to use the iterative pulse-compression algorithm to achieve nearly transform-limited sub-10fs laser pulses at the focus position, but also to create delay- and phase-controllable pules trains for phase-cycling process in third order signal measurements. The designed microscope setup with high NA objective focuses the broadband beam to the diffraction limit with a FWHM of 300 nm. The capability of the setup is demonstrated by obtaining spatially resolved 2D electronic spectroscopy of laterally nanostructured fluorinated zinc phthalocyanine film.