The nonradiative changeover fees Keep to the formula WNR = W (0) exp(-alphap), wherever p is the amount of phonons matching the Electricity gap. The nonradiative changeover fees of Er3+ show temperature dependence per the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative rest prices is difficult from https://damienceeby.tribunablog.com/a-review-of-er-yb-yab-crystal-47452893