The nonradiative transition fees follow the formulation WNR = W (0) exp(-alphap), where by p is the number of phonons matching the Power gap. The nonradiative transition fees of Er3+ show temperature dependence consistent with the multiphonon peace principle. In Tm3+ the temperature dependence of nonradiative relaxation costs is difficult https://williamx368ttq9.shoutmyblog.com/profile