The nonradiative transition fees Stick to the components WNR = W (0) exp(-alphap), in which p is the volume of phonons matching the Power gap. The nonradiative changeover fees of Er3+ exhibit temperature dependence in step with the multiphonon rest idea. In Tm3+ the temperature dependence of nonradiative relaxation costs https://andyfggez.thekatyblog.com/31978034/a-review-of-er-yb-yab-crystal