The nonradiative changeover prices follow the system WNR = W (0) exp(-alphap), in which p is the volume of phonons matching the Vitality hole. The nonradiative transition costs of Er3+ show temperature dependence in step with the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative leisure fees is https://erybyabcrystal64296.ivasdesign.com/54835734/top-guidelines-of-er-yb-yab-crystal