The nonradiative transition fees follow the formula WNR = W (0) exp(-alphap), where p is the quantity of phonons matching the Vitality gap. The nonradiative transition prices of Er3+ show temperature dependence in line with the multiphonon rest idea. In Tm3+ the temperature dependence of nonradiative rest fees is sophisticated https://erybyabcrystal08428.dsiblogger.com/66228529/er-yb-yab-crystal-an-overview