The nonradiative changeover costs follow the system WNR = W (0) exp(-alphap), the place p is the amount of phonons matching the energy gap. The nonradiative changeover charges of Er3+ show temperature dependence in line with the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative leisure premiums is https://erybyabcrystal18422.59bloggers.com/33596970/what-does-er-yb-yab-crystal-mean