The nonradiative changeover premiums follow the system WNR = W (0) exp(-alphap), where by p is the number of phonons matching the Strength gap. The nonradiative changeover fees of Er3+ exhibit temperature dependence per the multiphonon peace concept. In Tm3+ the temperature dependence of nonradiative relaxation fees is difficult by https://erybyabcrystal89630.blogrenanda.com/39517463/er-yb-yab-crystal-an-overview