The nonradiative transition costs follow the system WNR = W (0) exp(-alphap), the place p is the number of phonons matching the Vitality hole. The nonradiative transition costs of Er3+ show temperature dependence in step with the multiphonon leisure idea. In Tm3+ the temperature dependence of nonradiative rest costs is https://er-yb-yab-crystal63073.targetblogs.com/33669138/the-best-side-of-er-yb-yab-crystal