CONSIDERATIONS TO KNOW ABOUT ER:YB:YAB CRYSTAL

The nonradiative changeover prices follow the system WNR = W (0) exp(-alphap), in which p is the volume of phonons matching the Strength hole. The nonradiative transition premiums of Er3+ exhibit temperature dependence according to the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative relaxation charges is complicated w