5 SIMPLE STATEMENTS ABOUT ER:YB:YAB CRYSTAL EXPLAINED

The nonradiative transition costs Stick to the formula WNR = W (0) exp(-alphap), where by p is the amount of phonons matching the Power gap. The nonradiative changeover prices of Er3+ show temperature dependence in step with the multiphonon leisure idea. In Tm3+ the temperature dependence of nonradiative peace rates is complex with the existence of