On the deconvolution of the temporal width of laser pulses from pump-probe signals

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We consider pump-probe frequency integrated fluorescence signals. These transients, in general, arise from wave packets where the intrinsic dynamics and the response to the pump pulse is entangled in a complicated way. The signal from an infinitely short delta-pump pulse is the only exception. However, if the pump-probe signal is integrated over the frequencies of the pump laser, the signal can be expressed as a convolution of the pulse envelope with the signal obtained from a delta-pulse excitation. We consider the deconvolution of the pulse envelope and demonstrate that the signal corresponding to a delta-pump pulse can be recovered exactly from signals using pump pulses of finite temporal width. Numerical examples are presented for asymptotic fragment detection in the reaction, ICN --> I+CN. (C) 1999 American Institute of Physics.
Original languageEnglish
JournalJournal of Chemical Physics
Volume111
Issue number23
Pages (from-to)10469-10475
ISSN0021-9606
DOIs
Publication statusPublished - 1999

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Copyright (1999) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

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    Research areas

  • STATES, EXCITATION, PHOTODISSOCIATION, MOLECULES, DYNAMICS

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