The nonradiative transition rates follow the method WNR = W (0) exp(-alphap), where by p is the quantity of phonons matching the Electrical power gap. The nonradiative transition rates of Er3+ exhibit temperature dependence in line with the multiphonon peace idea. In Tm3+ the temperature dependence of nonradiative relaxation prices https://er-yb-yab-crystal30627.imblogs.net/82884202/helping-the-others-realize-the-advantages-of-er-yb-yab-crystal