LITTLE KNOWN FACTS ABOUT ER:YB:YAB CRYSTAL.

The nonradiative changeover costs Keep to the method WNR = W (0) exp(-alphap), wherever p is the number of phonons matching the Electricity gap. The nonradiative changeover rates of Er3+ exhibit temperature dependence in step with the multiphonon leisure idea. In Tm3+ the temperature dependence of nonradiative relaxation rates is complicated by the