Düsseldorf 2007 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 64: Quantum Control II
MO 64.5: Vortrag
Freitag, 23. März 2007, 15:00–15:15, 6F
Calculation of 2D spectra of the FMO complex — •Ben Brüggemann1,2, Pär Kjellberg1, and Tonu Pullerits1 — 1Chemical Physics, Lund University, Sweden — 2Institut für Physik, Humboldt Universität zu Berlin
We calculate 2D frequency resolved spectra for the FMO complex nonperturbatively in the field. This is possible due to the summation of the polarizations for a number of randomly placed complexes, each one excited with a phase related to its position. Since orientational averaging and energetic disorder can be included at the same time the additional computational effort is moderate. The low intensity spectra are compared with the experimental ones [1] and show good agreement.
The advantage of the presented method is that the intensity dependence of the 2D spectrum can be investigated, as well as the signal from higher order phase matched directions. Furthermore the inclusion of shaped laser pulses is easily possible.
[1] T. Brixner et al., Nature 434, 625 (2005).