The nonradiative changeover costs Stick to the formula WNR = W (0) exp(-alphap), where p is the volume of phonons matching the Strength hole. The nonradiative transition fees of Er3+ exhibit temperature dependence consistent with the multiphonon rest theory. In Tm3+ the temperature dependence of nonradiative rest premiums is challenging https://finnnogzu.59bloggers.com/33564413/er-yb-yab-crystal-an-overview