The nonradiative changeover rates Keep to the formula WNR = W (0) exp(-alphap), where by p is the volume of phonons matching the Strength gap. The nonradiative changeover charges of Er3+ show temperature dependence in step with the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative rest premiums https://er-yb-yab-crystal52849.onzeblog.com/33273810/the-greatest-guide-to-er-yb-yab-crystal