The nonradiative transition costs Keep to the formulation WNR = W (0) exp(-alphap), wherever p is the quantity of phonons matching the Vitality hole. The nonradiative changeover prices of Er3+ exhibit temperature dependence consistent with the multiphonon peace idea. In Tm3+ the temperature dependence of nonradiative rest premiums is complex https://augustueitr.blogscribble.com/33323818/considerations-to-know-about-er-yb-yab-crystal