FACTS ABOUT ER:YB:YAB CRYSTAL REVEALED

The nonradiative changeover rates Keep to the formulation WNR = W (0) exp(-alphap), wherever p is the amount of phonons matching the energy gap. The nonradiative changeover rates of Er3+ exhibit temperature dependence according to the multiphonon relaxation concept. In Tm3+ the temperature dependence of nonradiative leisure premiums is complex with