The nonradiative transition rates follow the components WNR = W (0) exp(-alphap), where by p is the volume of phonons matching the Electrical power hole. The nonradiative transition charges of Er3+ exhibit temperature dependence in line with the multiphonon relaxation principle. In Tm3+ the temperature dependence of nonradiative rest charges https://stephenabzwr.prublogger.com/32464067/5-simple-statements-about-er-yb-yab-crystal-explained