The nonradiative changeover fees follow the formulation WNR = W (0) exp(-alphap), where p is the number of phonons matching the Strength gap. The nonradiative changeover charges of Er3+ show temperature dependence in keeping with the multiphonon relaxation principle. In Tm3+ the temperature dependence of nonradiative peace prices is sophisticated https://cesarlmkfz.dm-blog.com/34824836/examine-this-report-on-er-yb-yab-crystal