NOT KNOWN FACTUAL STATEMENTS ABOUT ER:YB:YAB CRYSTAL

The nonradiative transition rates Adhere to the system WNR = W (0) exp(-alphap), wherever p is the number of phonons matching the Vitality hole. The nonradiative changeover fees of Er3+ show temperature dependence in step with the multiphonon peace principle. In Tm3+ the temperature dependence of nonradiative peace charges is complex with the exist