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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1995),
  • paper QFF1

Dependence of time-resolved pump-probe signals on probe spectral shape

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Abstract

We demonstrate that in femtosecond pumpprobe experiments the signal is not always independent of the probe-pulse spectral shape. This is in contradiction to the common interpretation of these experiments, in which the pump-probe spectra are simply assumed to represent time-dependent absorption spectra. Indeed, the absorption of a sample as measured by a single low- intensity optical field is independent of its spectral shape.

© 1995 Optical Society of America

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