LITTLE KNOWN FACTS ABOUT ER:YB:YAB CRYSTAL.

The nonradiative changeover rates Keep to the components WNR = W (0) exp(-alphap), where p is the number of phonons matching the energy gap. The nonradiative changeover premiums of Er3+ show temperature dependence according to the multiphonon leisure principle. In Tm3+ the temperature dependence of nonradiative rest charges is sophisticated from th