THE BEST SIDE OF ER:YB:YAB CRYSTAL

The nonradiative transition costs Stick to the formula WNR = W (0) exp(-alphap), where by p is the amount of phonons matching the energy gap. The nonradiative changeover charges of Er3+ show temperature dependence in step with the multiphonon leisure theory. In Tm3+ the temperature dependence of nonradiative rest premiums is complex because of the