ER:YB:YAB CRYSTAL CAN BE FUN FOR ANYONE

The nonradiative transition costs Stick to the components WNR = W (0) exp(-alphap), where by p is the amount of phonons matching the Electrical power gap. The nonradiative transition premiums of Er3+ show temperature dependence per the multiphonon relaxation theory. In Tm3+ the temperature dependence of nonradiative rest rates is complex because of