LITTLE KNOWN FACTS ABOUT ER:YB:YAB CRYSTAL.

The nonradiative changeover prices Keep to the formula WNR = W (0) exp(-alphap), where by p is the amount of phonons matching the energy gap. The nonradiative changeover rates of Er3+ exhibit temperature dependence consistent with the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative peace costs is sophisticated through t