The nonradiative transition prices follow the formula WNR = W (0) exp(-alphap), in which p is the number of phonons matching the energy hole. The nonradiative transition rates of Er3+ exhibit temperature dependence per the multiphonon rest theory. In Tm3+ the temperature dependence of nonradiative leisure rates is complex because https://erybyabcrystal96395.blog2learn.com/80912219/er-yb-yab-crystal-an-overview