The nonradiative changeover fees Stick to the system WNR = W (0) exp(-alphap), where by 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 https://dallasfggau.bloggerswise.com/40425091/5-simple-statements-about-er-yb-yab-crystal-explained