Abstract

The attainable contrast in spectrally highly selective photochromic materials critically depends on the Debye-Waller factors (DWF)/1/. The search for better hole-burning systems requires simple criteria for the selection of suitable dopants and hosts on the basis of molecular structure and, preferably, of room-temperature spectroscopy. The accumulated experimental data allow to establish reasonable relationships between the DWF and the differences of intermolecular interaction parameters in the ground and excited state (dipole moments, polarizabilities).

© 1991 Optical Society of America