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Spectroscopic and quantum‐control aspects of ultrashort‐pulse synthesis through impulsive high‐order stimulated Raman scattering
Author(s) -
Zheltikov A. M.
Publication year - 2002
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.826
Subject(s) - raman spectroscopy , raman scattering , coherent anti stokes raman spectroscopy , excited state , pulse (music) , laser , x ray raman scattering , coherent control , raman cooling , chemistry , optics , excitation , ultrashort pulse , atomic physics , molecular physics , physics , quantum mechanics , detector
The spectroscopic and quantum‐control aspects of short‐pulse synthesis through the generation of multiple Stokes and anti‐Stokes sidebands in an impulsively pre‐excited Raman‐active medium are considered. The use of sequences of short laser pulses leading to a resonant excitation of Raman modes is shown to allow the generation of multiple Stokes and anti‐Stokes sidebands to be considerably enhanced, with the characteristic length of the spectral broadening of a probe pulse propagating in a Raman‐active medium pre‐excited by a sequence of short pulses being inversely proportional to the number of pulses in this sequence. Coherent four‐wave mixing techniques are shown to be a convenient tool for visualizing the result of impulsive preparation of a Raman‐active medium. The results of Raman spectroscopic studies are used to specify Raman‐active molecules with sufficiently short periods of Raman vibrations and high efficiencies of Raman scattering, which offer especially much promise for the generation of few‐cycle light pulses in Raman‐active media. Copyright © 2002 John Wiley & Sons, Ltd.