The nonradiative transition fees Stick to the method WNR = W (0) exp(-alphap), exactly where p is the number of phonons matching the Vitality hole. The nonradiative changeover fees of Er3+ exhibit temperature dependence per the multiphonon peace principle. In Tm3+ the temperature dependence of nonradiative relaxation rates is challenging https://er-yb-yab-crystal51739.nizarblog.com/33461610/helping-the-others-realize-the-advantages-of-er-yb-yab-crystal