The nonradiative transition charges follow the method WNR = W (0) exp(-alphap), exactly where p is the quantity of phonons matching the energy hole. The nonradiative changeover charges of Er3+ show temperature dependence consistent with the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative peace fees is difficult https://devinyzywt.dm-blog.com/33201220/top-latest-five-er-yb-yab-crystal-urban-news