The nonradiative transition costs Adhere to the method WNR = W (0) exp(-alphap), in which p is the volume of phonons matching the Vitality gap. The nonradiative changeover costs of Er3+ exhibit temperature dependence in line with the multiphonon relaxation concept. In Tm3+ the temperature dependence of nonradiative relaxation premiums https://er-yb-yab-crystal51740.loginblogin.com/40305986/er-yb-yab-crystal-an-overview