LITTLE KNOWN FACTS ABOUT ER:YB:YAB CRYSTAL.

The nonradiative changeover costs follow the method WNR = W (0) exp(-alphap), where by p is the amount of phonons matching the Power gap. The nonradiative transition prices of Er3+ show temperature dependence according to the multiphonon leisure concept. In Tm3+ the temperature dependence of nonradiative relaxation charges is sophisticated with the