ER:YB:YAB CRYSTAL FOR DUMMIES

The nonradiative transition rates Keep to the method WNR = W (0) exp(-alphap), in which p is the volume of phonons matching the energy gap. The nonradiative changeover charges of Er3+ show temperature dependence in line with the multiphonon peace principle. In Tm3+ the temperature dependence of nonradiative rest costs is difficult from the existenc