Hannover 2010 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 7: Poster: Femtosecond Spectroscopy

MO 7.11: Poster

Dienstag, 9. März 2010, 16:00–18:30, Lichthof

Suppression of perturbed free induction decay and noise in experimental ultrafast pump-probe data — •Patrick Nuernberger, Kevin F. Lee, Adeline Bonvalet, Thomas Polack, Marten H. Vos, Antigoni Alexandrou, and Manuel Joffre — Laboratoire d’Optique et Biosciences, Ecole Polytechnique, Centre National de la Recherche Scientifique, 91128 Palaiseau, France, and Institut National de la Santé et de la Recherche Médicale, U696, 91128 Palaiseau, France

We apply a Fourier-filtering technique for the global removal of coherent contributions, like perturbed free induction decay, and noise, to experimental pump-probe spectra. A further filtering scheme gains access to spectra otherwise only recordable by scanning the probe’s center frequency, with adjustable spectral resolution. These methods cleanse pump-probe data and allow improved visualization and simpler analysis of the contained dynamics. We demonstrate these filters using visible pump/midinfrared probe spectroscopy of ligand dissociation in carboxy-hemoglobin.