The nonradiative changeover rates Keep to the formula WNR = W (0) exp(-alphap), wherever p is the number of phonons matching the Strength gap. The nonradiative changeover prices of Er3+ show temperature dependence consistent with the multiphonon peace idea. In Tm3+ the temperature dependence of nonradiative peace costs is complicated https://erybyabcrystal06318.blogdun.com/33800697/a-secret-weapon-for-er-yb-yab-crystal