Abstract
The study of molecular dynamics in liquid phase has been a subject of active research in the last two decades.1 Time-resolved coherent methods have been used as the time domain analog of spontaneous Raman spectroscopy; they exhibit more clearly the dynamical information, A degradation of an electronic excitation and vibralional phase relaxation in molecules may be mentioned among the most important fundamental spectroscopic problems. As a part of these global studies the terahertz quantum beats resulting from the excitation of the close-lying Raman-active transitions were observed and interpreted.2 Recently these effects were widely discussed (keep in mind their possible applications to the spatial soliton switching procedure based on the all-optical modulation effect beyond the bandwidth of existing electro-optic modulators3). In that way it is very important to gain some additional experimental results concerned with the quantum molecular oscillations in liquids, especially if these results are obtained by the methods that weren’t used before.
© 1997 Optical Society of America
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