The nonradiative changeover charges Stick to the method WNR = W (0) exp(-alphap), wherever p is the quantity of phonons matching the Electrical power hole. The nonradiative changeover costs of Er3+ exhibit temperature dependence per the multiphonon relaxation theory. In Tm3+ the temperature dependence of nonradiative leisure prices is complex https://erybyabcrystal85172.getblogs.net/65824211/er-yb-yab-crystal-an-overview