The nonradiative changeover costs Keep to the formulation WNR = W (0) exp(-alphap), where p is the volume of phonons matching the Strength gap. The nonradiative changeover costs of Er3+ exhibit temperature dependence according to the multiphonon peace concept. In Tm3+ the temperature dependence of nonradiative leisure costs is challenging https://er-yb-yab-crystal40628.bluxeblog.com/65227529/the-smart-trick-of-er-yb-yab-crystal-that-nobody-is-discussing