Transient Anisotropy in Degenerate Systems: Experimental Observation in a Cd-porphyrin
1 Karlsruhe Institute of Technology, Institute for Physical Chemistry and Center for Functional Nanostructures, 76128 Karlsruhe, Germany
2 Ludwig-Maximilians-Universität, Lehrstuhl für BioMolekulare Optik, Oettingenstraße 67, 80538 München, Germany
An unusual high transient anisotropy up to 0.65 in cadmium meso-tetraphenyl porphyrin in tetrahydrofuran was recorded which dacays on a 100 ps timescale. Opposite to previous work, this behaviour was explained by an incoherent mixing of excited state absorption, ground state bleach and stimulated emission.
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