The nonradiative changeover costs follow the formula WNR = W (0) exp(-alphap), where p is the quantity of phonons matching the Vitality hole. The nonradiative changeover charges of Er3+ show temperature dependence in line with the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative peace prices is intricate https://israelszbbz.blogitright.com/33405911/facts-about-er-yb-yab-crystal-revealed