The nonradiative transition premiums follow the formula WNR = W (0) exp(-alphap), where p is the amount of phonons matching the Vitality hole. The nonradiative changeover fees of Er3+ exhibit temperature dependence in step with the multiphonon leisure idea. In Tm3+ the temperature dependence of nonradiative rest fees is challenging https://kyw-crystal50503.total-blog.com/details-fiction-and-er-yb-yab-crystal-60053244