The nonradiative changeover fees Keep to the method WNR = W (0) exp(-alphap), the place p is the volume of phonons matching the Vitality hole. The nonradiative changeover premiums of Er3+ exhibit temperature dependence per the multiphonon rest concept. In Tm3+ the temperature dependence of nonradiative leisure rates is sophisticated https://erybyabcrystal96284.free-blogz.com/80402183/5-simple-techniques-for-er-yb-yab-crystal