The nonradiative transition costs follow the components WNR = W (0) exp(-alphap), wherever p is the amount of phonons matching the energy gap. The nonradiative changeover premiums of Er3+ show temperature dependence in keeping with the multiphonon relaxation concept. In Tm3+ the temperature dependence of nonradiative peace rates is complicated https://lorenzogvjwh.blogdiloz.com/33766860/considerations-to-know-about-er-yb-yab-crystal