The nonradiative transition rates follow the formulation WNR = W (0) exp(-alphap), where by p is the number of phonons matching the Power gap. The nonradiative transition rates of Er3+ show temperature dependence in line with the multiphonon rest concept. In Tm3+ the temperature dependence of nonradiative leisure fees is https://er-yb-yab-crystal02456.like-blogs.com/34578621/examine-this-report-on-er-yb-yab-crystal