Color effects in pressure-tuned hole-burned spectra

G. Gradl, J. Zollfrank, W. Breinl, J. Friedrich

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45 Scopus citations


We applied hydrostatic pressure to spectral holes burned into a resorufin doped ethanol/methanol glass. We found that the line shift is perfectly linear with pressure and showed a pronounced dependence on the burn frequency as predicted by theory [J. Chem. Phys. 90, 3274 (1989)]. We exploited the burn frequency dependence to determine the solvent shift of the dye probe and the compressibility of the alcohol glass used. On the other hand, the behavior of the hole width under pressure shows features not predicted by theory: The broadening is, like the line shift, dependent on the burn frequency within the inhomogeneous band, yet in a nonlinear fashion. We attribute the color effect in the pressure induced broadening of the hole to a breakdown of the Gaussian approximation.

Original languageEnglish
Pages (from-to)7619-7624
Number of pages6
JournalJournal of Chemical Physics
Issue number12
StatePublished - 1991
Externally publishedYes


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