LITTLE KNOWN FACTS ABOUT ER:YB:YAB CRYSTAL.

The nonradiative transition charges follow the system WNR = W (0) exp(-alphap), wherever p is the amount of phonons matching the Strength hole. The nonradiative transition fees of Er3+ exhibit temperature dependence according to the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative peace charges is complicated with the