The nonradiative changeover costs follow the formula WNR = W (0) exp(-alphap), exactly where p is the amount of phonons matching the Strength gap. The nonradiative transition fees of Er3+ exhibit temperature dependence consistent with the multiphonon leisure principle. In Tm3+ the temperature dependence of nonradiative leisure costs is complex https://zaneklkhd.bcbloggers.com/32486846/the-basic-principles-of-er-yb-yab-crystal