Suppression of perturbed free-induction decay and noise in experimental ultrafast pump-probe data.
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.
Nuernberger
Patrick
P
Laboratoire d'Optique et Biosciences, Ecole Polytechnique, CNRS, France.
Lee
Kevin F
KF
Bonvalet
Adeline
A
Polack
Thomas
T
Vos
Marten H
MH
Alexandrou
Antigoni
A
Joffre
Manuel
M
D016477:Artifacts; D001703:Biophysics / Q000379:methods*; D002248:Carbon Monoxide / Q000737:chemistry; D002263:Carboxyhemoglobin / Q000737:chemistry; D004867:Equipment Design / Q000295:instrumentation; D005583:Fourier Analysis; D006801:Humans; D015233:Models, Statistical; D016011:Normal Distribution; D055095:Optics and Photonics; D009991:Oscillometry / Q000295:instrumentation / Q000379:methods; D013055:Spectrophotometry, Infrared / Q000295:instrumentation*; D013059:Spectrum Analysis, Raman / Q000295:instrumentation
D002248:Carbon Monoxide; D002263:Carboxyhemoglobin