NOT KNOWN DETAILS ABOUT ER:YB:YAB CRYSTAL

The nonradiative transition premiums Stick to the formula 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 consistent with the multiphonon rest idea. In Tm3+ the temperature dependence of nonradiative peace charges is difficult w