The nonradiative transition premiums Stick to the components WNR = W (0) exp(-alphap), where by p is the amount of phonons matching the energy gap. The nonradiative changeover rates of Er3+ exhibit temperature dependence according to the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative relaxation charges is https://erybyabcrystal85172.get-blogging.com/33632545/what-does-er-yb-yab-crystal-mean