The nonradiative changeover rates follow the system WNR = W (0) exp(-alphap), in which p is the volume of phonons matching the Vitality hole. The nonradiative changeover fees of Er3+ show temperature dependence according to the multiphonon peace idea. In Tm3+ the temperature dependence of nonradiative relaxation premiums is difficult https://er-yb-yab-crystal41739.bloginwi.com/66848699/the-ultimate-guide-to-er-yb-yab-crystal