The nonradiative changeover charges Keep to the system WNR = W (0) exp(-alphap), where by p is the quantity of phonons matching the energy hole. The nonradiative changeover charges of Er3+ show temperature dependence in keeping with the multiphonon peace idea. In Tm3+ the temperature dependence of nonradiative rest rates https://erybyabcrystal57912.blazingblog.com/34810646/top-guidelines-of-er-yb-yab-crystal