The nonradiative changeover fees Keep to the system WNR = W (0) exp(-alphap), exactly where p is the volume of phonons matching the Power hole. The nonradiative changeover charges of Er3+ show temperature dependence in line with the multiphonon leisure idea. In Tm3+ the temperature dependence of nonradiative relaxation costs https://martinhihea.blog2news.com/33790505/the-greatest-guide-to-er-yb-yab-crystal