LITTLE KNOWN FACTS ABOUT ER:YB:YAB CRYSTAL.

The nonradiative changeover costs Adhere to the components WNR = W (0) exp(-alphap), where by p is the amount of phonons matching the Vitality hole. The nonradiative changeover costs of Er3+ show temperature dependence in step with the multiphonon rest idea. In Tm3+ the temperature dependence of nonradiative peace costs is difficult from the existe