The nonradiative changeover charges Adhere to the formula WNR = W (0) exp(-alphap), the place p is the number of phonons matching the Electricity gap. The nonradiative changeover prices of Er3+ show temperature dependence per the multiphonon relaxation principle. In Tm3+ the temperature dependence of nonradiative rest charges is challenging https://jaidenlonlh.blogocial.com/little-known-facts-about-er-yb-yab-crystal-68913910