FACTS ABOUT ER:YB:YAB CRYSTAL REVEALED

The nonradiative transition rates follow the formulation WNR = W (0) exp(-alphap), wherever p is the volume of phonons matching the Vitality hole. The nonradiative transition rates of Er3+ show temperature dependence consistent with the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative relaxation rates is intricate with t