The nonradiative changeover prices Keep to the system WNR = W (0) exp(-alphap), wherever p is the quantity of phonons matching the Power hole. The nonradiative changeover charges of Er3+ show temperature dependence in step with the multiphonon relaxation concept. In Tm3+ the temperature dependence of nonradiative peace prices is https://woodyi804khf4.get-blogging.com/profile