The nonradiative changeover costs Keep to the formula WNR = W (0) exp(-alphap), in which p is the amount of phonons matching the Vitality hole. The nonradiative transition costs of Er3+ exhibit temperature dependence per the multiphonon leisure concept. In Tm3+ the temperature dependence of nonradiative leisure rates is difficult https://er-yb-yab-crystal73951.full-design.com/er-yb-yab-crystal-can-be-fun-for-anyone-75537735