A SIMPLE KEY FOR ER:YB:YAB CRYSTAL UNVEILED

The nonradiative transition costs Stick to the formula WNR = W (0) exp(-alphap), where p is the amount of phonons matching the energy gap. The nonradiative transition premiums of Er3+ show temperature dependence per the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative relaxation rates is difficult because of the existenc