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/mid-infrared probe spectroscopy of ligand dissociation in carboxyhemoglobin.
© 2009 Optical Society of America
Original Manuscript: May 15, 2009
Manuscript Accepted: September 4, 2009
Published: October 15, 2009
Patrick Nuernberger, Kevin F. Lee, Adeline Bonvalet, Thomas Polack, Marten H. Vos, Antigoni Alexandrou, and Manuel Joffre, "Suppression of perturbed free-induction decay and noise in experimental ultrafast pump-probe data," Opt. Lett. 34, 3226-3228 (2009)
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