LITTLE KNOWN FACTS ABOUT ER:YB:YAB CRYSTAL.

The nonradiative transition costs Adhere to the formulation WNR = W (0) exp(-alphap), the place p is the number of phonons matching the Electrical power gap. The nonradiative transition fees of Er3+ show temperature dependence consistent with the multiphonon peace principle. In Tm3+ the temperature dependence of nonradiative peace premiums is sophi