The nonradiative transition rates Stick to the method WNR = W (0) exp(-alphap), where by p is the number of phonons matching the Electrical power gap. The nonradiative transition fees of Er3+ show temperature dependence according to the multiphonon rest idea. In Tm3+ the temperature dependence of nonradiative relaxation costs https://paulq126ywy5.wikigiogio.com/user