Application of the broad hole burning technique for studying low-temperature photoreactions in impurity amorphous bodies

A new experimental method is developed for measuring kinetics of low-temperature photoreactions—the broad hole burning technique, which eliminates the nonexponentiality of the hole burning kinetics caused by the inhomogeneous broadening. The method is successfully used to study the low-temperature photoreactions in various impurity amorphous systems. Examples of single-and two-exponential kinetics have been found, as well as kinetics with a moderate or large dispersion of the hole burning quantum efficiency. The results obtained show a good outlook for the broad hole burning technique for studying low-temperature photoreactions and illustrate the diversity of photoreactions occurring in specific chromophore-matrix pairs.