The nonradiative changeover premiums Keep to the formula WNR = W (0) exp(-alphap), where p is the volume of phonons matching the Power hole. The nonradiative transition charges of Er3+ exhibit temperature dependence according to the multiphonon peace concept. In Tm3+ the temperature dependence of nonradiative leisure rates is complex https://sergioiottt.blogspothub.com/32430389/rumored-buzz-on-er-yb-yab-crystal