The nonradiative transition rates follow the system WNR = W (0) exp(-alphap), the place p is the number of phonons matching the Electrical power gap. The nonradiative changeover charges of Er3+ show temperature dependence in line with the multiphonon leisure idea. In Tm3+ the temperature dependence of nonradiative rest fees https://erybyabcrystal06394.dailyhitblog.com/38555983/er-yb-yab-crystal-an-overview