A REVIEW OF ER:YB:YAB CRYSTAL

The nonradiative transition costs Keep to the system WNR = W (0) exp(-alphap), in which p is the number of phonons matching the energy gap. The nonradiative transition fees of Er3+ exhibit temperature dependence in step with the multiphonon leisure idea. In Tm3+ the temperature dependence of nonradiative peace fees is difficult through the existenc