The nonradiative changeover rates Keep to the system WNR = W (0) exp(-alphap), where by p is the number of phonons matching the energy hole. The nonradiative changeover costs of Er3+ exhibit temperature dependence consistent with the multiphonon leisure concept. In Tm3+ the temperature dependence of nonradiative peace premiums is https://johnb790vme3.westexwiki.com/user