THE ULTIMATE GUIDE TO ER:YB:YAB CRYSTAL

The nonradiative transition rates Keep to the formulation WNR = W (0) exp(-alphap), where by p is the amount of phonons matching the energy gap. The nonradiative transition fees of Er3+ exhibit temperature dependence according to the multiphonon relaxation principle. In Tm3+ the temperature dependence of nonradiative peace prices is intricate by th