Artifacts in femtosecond transient absorption spectroscopy |
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| Authors: | M. Lorenc M. Ziolek R. Naskrecki J. Karolczak J. Kubicki A. Maciejewski |
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| Affiliation: | (1) Quantum Electronics Laboratory, Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznan, Poland, PL;(2) Photochemistry Laboratory, Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznan, Poland, PL |
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| Abstract: | ![]()
The paper discusses three different artifacts related to two-photon absorption (TPA), stimulated Raman amplification (SRA) and cross-phase modulation (XPM), all intrinsic to transient absorption measurements with femtosecond time resolution. Certain properties of these signals are analysed and shown to superimpose onto measured transient absorption spectra. Ways of reducing the influence of the artifacts discussed are suggested. A simple correcting procedure based on the linear intensity dependence of the artifacts discussed is proposed. Received: 29 May 2001 / Final version: 15 October 2001 / Published online: 29 November 2001 |
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| Keywords: | PACS: 07.60.-j 42.62.Fi 42.65.Re |
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