A REVIEW OF ER:YB:YAB CRYSTAL

The nonradiative transition rates Keep to the formula WNR = W (0) exp(-alphap), exactly where p is the quantity of phonons matching the Strength hole. The nonradiative changeover rates of Er3+ show temperature dependence consistent with the multiphonon relaxation idea. In Tm3+ the temperature dependence of nonradiative rest fees is challenging with