ER:YB:YAB CRYSTAL FOR DUMMIES

The nonradiative transition prices Keep to the method WNR = W (0) exp(-alphap), where p is the number of phonons matching the Power gap. The nonradiative changeover fees of Er3+ show temperature dependence according to the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative rest prices is difficult because of the existence