A REVIEW OF ER:YB:YAB CRYSTAL

The nonradiative changeover charges follow the formulation WNR = W (0) exp(-alphap), where by p is the quantity of phonons matching the Electricity hole. The nonradiative changeover charges of Er3+ show temperature dependence consistent with the multiphonon leisure concept. In Tm3+ the temperature dependence of nonradiative peace charges is intrica