The nonradiative transition costs follow the formula WNR = W (0) exp(-alphap), exactly where p is the number of phonons matching the energy hole. The nonradiative changeover rates of Er3+ exhibit temperature dependence in step with the multiphonon relaxation concept. In Tm3+ the temperature dependence of nonradiative relaxation charges is https://donovanyzyvr.bloggosite.com/40099425/the-definitive-guide-to-er-yb-yab-crystal