Chronospectroscopic investigation of the luminescence of neodymium glasses

An investigation was made of the luminescence of various types of neodymium glasses by a chronospectroscopic technique, which involved the simultaneous spectral and temporal selection of the signal being measured during pulsed excitation. It was found that, in addition to the variance of the positions of the activator energy levels, silicate glasses also have a well-defined variance of the radiative probability of the neodymium ions. As a result, a number of new effects were observed and investigated, including changes in the luminescence spectra of neodymium glasses during decay and the dependence of the luminescence decay kinetics of neodymium glasses on the wavelengths of the exciting light and recorded luminescence. A time shift of the luminescence spectra of concentrated neodymium glasses was observed, due to the more efficient energy transfer by the induction of lattice vibrations than by the absorption of vibrations at low temperatures.