The nonradiative changeover premiums Stick to the components WNR = W (0) exp(-alphap), the place p is the number of phonons matching the Strength gap. The nonradiative changeover premiums of Er3+ show temperature dependence in step with the multiphonon peace principle. In Tm3+ the temperature dependence of nonradiative peace prices https://dallasgihez.timeblog.net/69039295/5-simple-statements-about-er-yb-yab-crystal-explained