The nonradiative transition costs Stick to the components WNR = W (0) exp(-alphap), in which p is the number of phonons matching the Strength hole. The nonradiative transition premiums of Er3+ exhibit temperature dependence per the multiphonon relaxation concept. In Tm3+ the temperature dependence of nonradiative leisure fees is difficult https://erybyabcrystal96284.free-blogz.com/80402183/5-simple-techniques-for-er-yb-yab-crystal