THE 2-MINUTE RULE FOR ER:YB:YAB CRYSTAL

The nonradiative transition fees Keep to the formula WNR = W (0) exp(-alphap), where p is the quantity of phonons matching the Power gap. The nonradiative transition rates of Er3+ exhibit temperature dependence per the multiphonon relaxation idea. In Tm3+ the temperature dependence of nonradiative peace premiums is complex from the existence of sel