NOT KNOWN FACTUAL STATEMENTS ABOUT ER:YB:YAB CRYSTAL

The nonradiative changeover charges Keep to the method WNR = W (0) exp(-alphap), where by p is the volume of phonons matching the Strength hole. The nonradiative changeover prices of Er3+ exhibit temperature dependence in step with the multiphonon leisure concept. In Tm3+ the temperature dependence of nonradiative leisure prices is complex because