THE BASIC PRINCIPLES OF ER:YB:YAB CRYSTAL

The nonradiative changeover prices Adhere to the method WNR = W (0) exp(-alphap), where p is the volume of phonons matching the Electricity hole. The nonradiative transition charges of Er3+ show temperature dependence according to the multiphonon relaxation concept. In Tm3+ the temperature dependence of nonradiative relaxation prices is intricate w