A SECRET WEAPON FOR ER:YB:YAB CRYSTAL

The nonradiative transition rates Keep to the formulation WNR = W (0) exp(-alphap), where by p is the number of phonons matching the Strength hole. The nonradiative changeover charges of Er3+ show temperature dependence consistent with the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative peace rates is difficult by the