A SECRET WEAPON FOR ER:YB:YAB CRYSTAL

The nonradiative changeover fees Keep to the formula WNR = W (0) exp(-alphap), wherever p is the number of phonons matching the Power gap. The nonradiative transition rates of Er3+ show temperature dependence consistent with the multiphonon relaxation theory. In Tm3+ the temperature dependence of nonradiative relaxation charges is complex via the e