A SECRET WEAPON FOR ER:YB:YAB CRYSTAL

The nonradiative transition rates follow the formula WNR = W (0) exp(-alphap), in which p is the amount of phonons matching the energy hole. The nonradiative changeover premiums of Er3+ show temperature dependence according to the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative rest prices is complex via the existence o