The nonradiative transition rates Adhere to the components WNR = W (0) exp(-alphap), in which p is the amount of phonons matching the Strength gap. The nonradiative transition costs of Er3+ exhibit temperature dependence in step with the multiphonon relaxation principle. In Tm3+ the temperature dependence of nonradiative relaxation costs https://er-yb-yab-crystal86431.theisblog.com/33375965/facts-about-er-yb-yab-crystal-revealed