The nonradiative changeover costs follow the system WNR = W (0) exp(-alphap), in which p is the volume of phonons matching the Power hole. The nonradiative changeover prices of Er3+ exhibit temperature dependence consistent with the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative peace premiums is complex https://connerjkifb.theobloggers.com/39349849/top-guidelines-of-er-yb-yab-crystal