A SIMPLE KEY FOR ER:YB:YAB CRYSTAL UNVEILED

The nonradiative changeover charges follow the formula WNR = W (0) exp(-alphap), exactly where p is the number of phonons matching the Strength gap. The nonradiative changeover rates of Er3+ show temperature dependence consistent with the multiphonon leisure concept. In Tm3+ the temperature dependence of nonradiative peace charges is complicated by