THE 2-MINUTE RULE FOR ER:YB:YAB CRYSTAL

The nonradiative transition charges follow the system WNR = W (0) exp(-alphap), exactly where p is the volume of phonons matching the Vitality gap. The nonradiative transition premiums of Er3+ show temperature dependence per the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative peace prices is intricate via the existence