The nonradiative transition costs follow the system WNR = W (0) exp(-alphap), where p is the quantity of phonons matching the energy gap. The nonradiative changeover rates of Er3+ show temperature dependence consistent with the multiphonon rest idea. In Tm3+ the temperature dependence of nonradiative leisure costs is challenging because https://er-yb-yab-crystal76394.blogdemls.com/32978520/5-essential-elements-for-er-yb-yab-crystal