The nonradiative changeover charges follow the formulation WNR = W (0) exp(-alphap), where by p is the quantity of phonons matching the Electrical power hole. The nonradiative changeover charges of Er3+ show temperature dependence consistent with the multiphonon rest concept. In Tm3+ the temperature dependence of nonradiative relaxation fees is https://landenxdecb.blog5star.com/35298201/5-simple-statements-about-er-yb-yab-crystal-explained