LITTLE KNOWN FACTS ABOUT ER:YB:YAB CRYSTAL.

The nonradiative transition premiums Stick to the components WNR = W (0) exp(-alphap), wherever p is the number of phonons matching the Electrical power gap. The nonradiative changeover costs of Er3+ show temperature dependence in step with the multiphonon leisure idea. In Tm3+ the temperature dependence of nonradiative peace prices is intricate by