Anharmonic vibrational relaxation dynamics for a molecular impurity mode in alkali halide crystals.
01 January 1984
High resolution diode-laser spectroscopy and the nonequilibrium techniques of incoherent laser saturation and transient hole- burning spectroscopy have been used to measure the relaxation dynamics (specifically T1 and T2) of the nu3 internal vibrational mode of ReO4(-) molecules as functions of temperature and host alkali halide lattice. Inhomogeneously broadened linewidths less than 0.02 cm(-1) were observed in annealed crystals at low temperatures.