A REVIEW OF ER:YB:YAB CRYSTAL

The nonradiative changeover prices Keep to the formulation WNR = W (0) exp(-alphap), where by p is the volume of phonons matching the Strength hole. The nonradiative transition premiums of Er3+ exhibit temperature dependence according to the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative peace prices is sophisticated