The nonradiative transition premiums Adhere to the formula WNR = W (0) exp(-alphap), wherever p is the quantity of phonons matching the energy gap. The nonradiative changeover premiums of Er3+ exhibit temperature dependence according to the multiphonon leisure principle. In Tm3+ the temperature dependence of nonradiative peace costs is complex https://andersonhgfcy.qodsblog.com/33152024/er-yb-yab-crystal-an-overview