The nonradiative transition rates Keep to the formula WNR = W (0) exp(-alphap), where by p is the volume of phonons matching the Strength hole. The nonradiative transition charges of Er3+ show temperature dependence in line with the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative peace prices https://erybyabcrystal07395.jts-blog.com/32204673/the-2-minute-rule-for-er-yb-yab-crystal