THE BEST SIDE OF ER:YB:YAB CRYSTAL

The nonradiative transition premiums follow the method WNR = W (0) exp(-alphap), where p is the amount of phonons matching the Power gap. The nonradiative transition prices of Er3+ show temperature dependence in line with the multiphonon relaxation idea. In Tm3+ the temperature dependence of nonradiative relaxation fees is complex through the exist