The nonradiative transition charges Keep to the formulation WNR = W (0) exp(-alphap), in which p is the quantity of phonons matching the Strength gap. The nonradiative changeover prices of Er3+ exhibit temperature dependence per the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative peace fees is complicated https://erybyabcrystal51504.pointblog.net/5-essential-elements-for-er-yb-yab-crystal-76245788