The nonradiative changeover fees Stick to the components WNR = W (0) exp(-alphap), the place p is the number of phonons matching the Strength hole. The nonradiative transition rates of Er3+ show temperature dependence according to the multiphonon relaxation principle. In Tm3+ the temperature dependence of nonradiative relaxation costs is https://erybyabcrystal60504.mpeblog.com/58123861/er-yb-yab-crystal-an-overview