Abstract
We investigate broadening phenomena of spectral holes burned into delocalized states of molecular aggregates. We measured spectral-diffusion broadening, homogeneous line broadening, and pressure-induced line broadening. The behavior is quite different from that for localized states. Whereas homogeneous broadening is dominated by exciton–phonon scattering, spectral-diffusion broadening and pressure broadening are extremely small because of large motional narrowing effects.
© 1992 Optical Society of America
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