The nonradiative changeover costs follow the components WNR = W (0) exp(-alphap), the place p is the quantity of phonons matching the Electrical power gap. The nonradiative changeover prices of Er3+ show temperature dependence per the multiphonon leisure theory. In Tm3+ the temperature dependence of nonradiative relaxation premiums is intricate https://er-yb-yab-crystal51840.blogolenta.com/30053830/5-simple-statements-about-er-yb-yab-crystal-explained