FACTS ABOUT ER:YB:YAB CRYSTAL REVEALED

The nonradiative transition charges Keep to the method WNR = W (0) exp(-alphap), where p is the quantity of phonons matching the Power gap. The nonradiative changeover rates of Er3+ exhibit temperature dependence according to the multiphonon relaxation concept. In Tm3+ the temperature dependence of nonradiative rest premiums is difficult because of