A REVIEW OF ER:YB:YAB CRYSTAL

The nonradiative transition rates Stick to the formula WNR = W (0) exp(-alphap), exactly where p is the number of phonons matching the Electrical power gap. The nonradiative transition costs of Er3+ exhibit temperature dependence consistent with the multiphonon leisure principle. In Tm3+ the temperature dependence of nonradiative relaxation fees is