The nonradiative changeover charges follow the components WNR = W (0) exp(-alphap), exactly where p is the number of phonons matching the energy gap. The nonradiative transition rates of Er3+ show temperature dependence in keeping with the multiphonon relaxation idea. In Tm3+ the temperature dependence of nonradiative peace rates is https://trevorzbzwt.azzablog.com/33256266/er-yb-yab-crystal-an-overview