LITTLE KNOWN FACTS ABOUT ER:YB:YAB CRYSTAL.

The nonradiative transition prices Adhere to the method WNR = W (0) exp(-alphap), exactly where p is the volume of phonons matching the Power gap. The nonradiative transition fees of Er3+ exhibit temperature dependence in keeping with the multiphonon relaxation theory. In Tm3+ the temperature dependence of nonradiative rest premiums is complex with