Statistical Fine Structure in the Inhomogeneously Broadened Electronic Origin of Pentacene in p-Terphenyl

摘要

Recently, the first observation of statistical fine structure on an inhomogeneously broadened absorption profile was reported (W. E. Moerner, T.P. Carter, Phys.Rev.Lett.59,2705(1987) for mixed crystals of pentacene in p-terphenyl using laser FM spectroscopy. Statistical fine structure is time-independent structure on the inhomogeneous line caused by statistical variations, in the spectral density of absorbers in each frequency interval. In this work, a model and an analysis of statistical fine structure using autocorrelation techniques are presented, and the dependence of the effect for pentacene in p-terphenyl at 1.4K on modulating frequency, detection phase, sample position, center concentration, and site is described.