A REVIEW OF ER:YB:YAB CRYSTAL

The nonradiative transition fees Stick to the method WNR = W (0) exp(-alphap), wherever p is the volume of phonons matching the Vitality gap. The nonradiative changeover premiums of Er3+ show temperature dependence in keeping with the multiphonon relaxation theory. In Tm3+ the temperature dependence of nonradiative rest premiums is intricate by the