ER:YB:YAB CRYSTAL CAN BE FUN FOR ANYONE

The nonradiative transition costs Keep to the system WNR = W (0) exp(-alphap), the place p is the number of phonons matching the Strength hole. The nonradiative transition charges of Er3+ show temperature dependence in line with the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative peace rates is challenging via the exi