ER:YB:YAB CRYSTAL CAN BE FUN FOR ANYONE

The nonradiative changeover prices follow the system WNR = W (0) exp(-alphap), in which p is the volume of phonons matching the Strength gap. The nonradiative transition charges of Er3+ exhibit temperature dependence per the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative rest premiums is complicated through the existen