The nonradiative transition prices Keep to the formulation WNR = W (0) exp(-alphap), where p is the amount of phonons matching the Power gap. The nonradiative changeover rates of Er3+ exhibit temperature dependence consistent with the multiphonon leisure principle. In Tm3+ the temperature dependence of nonradiative relaxation charges is challenging https://er-yb-yab-crystal77470.dsiblogger.com/66058749/the-5-second-trick-for-er-yb-yab-crystal