RUMORED BUZZ ON ER:YB:YAB CRYSTAL

The nonradiative changeover premiums follow the system WNR = W (0) exp(-alphap), in which p is the volume of phonons matching the Vitality gap. The nonradiative changeover fees of Er3+ show temperature dependence in line with the multiphonon rest idea. In Tm3+ the temperature dependence of nonradiative rest premiums is intricate from the existence