Suppression of perturbed free-induction decay and noise in experimental ultrafast pump-probe data

Patrick Nuernberger (1) , Kevin F. Lee (1) , Adeline Bonvalet (1) , Thomas Polack (1) , Marten H. Vos (1) , Antigoni Alexandrou (1) , Manuel Joffre (1)

1 LOB - Laboratoire d'optique et biosciences

We apply a Fourier filtering technique for the global removal of coherent contributions, like perturbed freeinduction 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/mid-infrared probe spectroscopy of ligand dissociation in carboxyhemoglobin. Cop. 2009 Optical Society of America.

Domaines: Optique [physics.optics]

Patrick Nuernberger, Kevin F. Lee, Adeline Bonvalet, Thomas Polack, Marten H. Vos, et al.. Suppression of perturbed free-induction decay and noise in experimental ultrafast pump-probe data. Optics Letters, 2009, 34 (20), pp.3226-3228. ⟨10.1364/OL.34.003226⟩. ⟨hal-00818494⟩