The nonradiative changeover rates Keep to the system WNR = W (0) exp(-alphap), in which p is the number of phonons matching the Strength hole. The nonradiative transition premiums of Er3+ show temperature dependence in keeping with the multiphonon peace principle. In Tm3+ the temperature dependence of nonradiative relaxation charges https://augustlmkhc.ageeksblog.com/32226752/the-basic-principles-of-er-yb-yab-crystal