Using the optical hole burning technique, a non-Lorentzian line profile was detected in the optical absorption spectra of chromophore molecules embedded in polymers and other organic glasses. The origin of the non-Lorentzian hole profiles is a<space>dispersion of interaction of chromophore molecules with two-level systems. This dispersion leads to a broad distribution of the absorption line widths of the individual chromophore molecules. The width of the distribution depends on temperature. Its maximal contribution to the experimental line width occurs at temperatures between 3<space>and<space>7<space>K, whereas it becomes less pronounced at higher and lower temperatures. As the main source of this distribution a dispersion of the TLS-chromophore interaction could be identified.