A picosecond photon echo study of a chromophore in an organic glass: Temperature dependence and comparison to nonphotochemical hole burning
- 1 January 1987
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 86 (1), 77-87
- https://doi.org/10.1063/1.452595
Abstract
The first two-pulse photon echo experiments on a chromophore in an organic glass are reported. The homogeneous electronic dephasing of resorufin in ethanol glass is measured from 1.5–11.4 K. The temperature dependence of the dephasing time does not fit the power law frequently predicted by theory for the dephasing characteristic of glasses. However, the temperature dependence can be accounted for by including dephasing from librations or acoustic phonons, mechanisms known to be important in crystals. The dephasing decay is found to be a single exponential for over six factors of e. The dephasing is also shown to be uncorrelated with the extent of nonphotochemical hole burning (NPHB). However, the homogeneous linewidth deduced from the photon echo is four times narrower than the linewidth obtained from NPHB, demonstrating that the hole is broadened by additional processes.Keywords
This publication has 45 references indexed in Scilit:
- An explanation of the anomalous temperature dependence of optical linewidths in glassesZeitschrift für Physik B Condensed Matter, 1984
- Photon Echoes below 1 K in a-Doped Glass FiberPhysical Review Letters, 1983
- Photochemical time-domain holography of weak picosecond pulsesOptics Communications, 1983
- Measurement of optical dephasing of Eu3+ and Pr3+ doped silicate glasses by spectral holeburningOptics Communications, 1983
- Measurement of optical homogeneous linewidths in a glass with picosecond accumulated photon echoesOptics Letters, 1983
- Anomalous Optical Homogeneous Linewidths in GlassesPhysical Review Letters, 1982
- Optical density effects in photon echo experimentsThe Journal of Chemical Physics, 1982
- Energy selection experiments in glassy matrices: The linewidths of the emissions S2→S and S2→S1 of azuleneThe Journal of Chemical Physics, 1980
- Calorimetric study of the glassy state XII. Plural glass-transition phenomena of ethanolThe Journal of Chemical Thermodynamics, 1977
- Variations in homogeneous fluorescence linewidth and electron–phonon coupling within an inhomogeneous spectral profileThe Journal of Chemical Physics, 1977