ER:YB:YAB CRYSTAL CAN BE FUN FOR ANYONE

The nonradiative changeover prices follow the components WNR = W (0) exp(-alphap), wherever p is the amount of phonons matching the energy gap. The nonradiative transition premiums of Er3+ show temperature dependence in step with the multiphonon peace idea. In Tm3+ the temperature dependence of nonradiative rest costs is complex because of the exis