LITTLE KNOWN FACTS ABOUT ER:YB:YAB CRYSTAL.

The nonradiative changeover rates Stick to the method WNR = W (0) exp(-alphap), where by p is the number of phonons matching the Power gap. The nonradiative changeover rates of Er3+ show temperature dependence consistent with the multiphonon relaxation idea. In Tm3+ the temperature dependence of nonradiative leisure premiums is sophisticated via th