PERSISTENT SPECTRAL HOLE-BURNING IN DYE-DOPED RARE-GAS MATRICES

In order to study dye-matrix interactions and dynamical properties in simple model systems, we incorporated free-base phthalocyanine in soli d matrices of argon, krypton and xenon. Using a novel cryostat, the sa mple, which was produced under vacuum conditions, could be immersed in liquid helium, allowing temperatures down to 1.5K. The assumptions of stochastic models describing the inhomogeneous broadening could be ve rified to a large extent by these model systems. Access to dynamical i nformation is gained through hole burning experiments.