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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 12 — Jun. 12, 2006
  • pp: 5823–5828

A filtering procedure for systematic removal of pump-perturbed polarization artifacts

Thomas Polack  »View Author Affiliations

Optics Express, Vol. 14, Issue 12, pp. 5823-5828 (2006)

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In time-dependent optical spectra, fast dynamics of narrow transitions give rise to artifacts consisting of spectral oscillations. In contrast with spectrally-integrated experiments, the interpretation of spectrally-resolved pump-probe experiments is thus far from straight-forward in regimes where such coherent effects dominate, i.e. when the timescales of pump-induced processes are shorter than the medium dephasing times. Analyzing the two-dimensional Fourier transform of the time-dependent spectrum, we identify the components responsible for these artifacts and we introduce a simple Fourier-filtering procedure for their systematic removal. This technique is theoretically demonstrated on the time-dependent spectrum of a transition undergoing a frequency shift. The technique is also shown to have the additional benefit of efficient noise filtering of time-dependent spectra.

© 2006 Optical Society of America

OCIS Codes
(070.4790) Fourier optics and signal processing : Spectrum analysis
(300.6240) Spectroscopy : Spectroscopy, coherent transient
(320.7150) Ultrafast optics : Ultrafast spectroscopy

ToC Category:
Ultrafast Optics

Original Manuscript: April 13, 2006
Revised Manuscript: May 21, 2006
Manuscript Accepted: May 22, 2006
Published: June 12, 2006

Thomas Polack, "A filtering procedure for systematic removal of pump-perturbed polarization artifacts," Opt. Express 14, 5823-5828 (2006)

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