LITTLE KNOWN FACTS ABOUT ER:YB:YAB CRYSTAL.

The nonradiative changeover rates follow the system WNR = W (0) exp(-alphap), exactly where p is the volume of phonons matching the Strength hole. The nonradiative transition premiums of Er3+ exhibit temperature dependence according to the multiphonon rest idea. In Tm3+ the temperature dependence of nonradiative relaxation costs is complicated with