THE BASIC PRINCIPLES OF ER:YB:YAB CRYSTAL

The nonradiative transition premiums Keep to the formulation WNR = W (0) exp(-alphap), where p is the quantity of phonons matching the Strength gap. The nonradiative transition premiums of Er3+ show temperature dependence per the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative relaxation charges is difficult by the exis