DETAILS, FICTION AND ER:YB:YAB CRYSTAL

The nonradiative changeover rates follow the system WNR = W (0) exp(-alphap), the place p is the number of phonons matching the Electrical power gap. The nonradiative changeover rates of Er3+ exhibit temperature dependence in keeping with the multiphonon relaxation theory. In Tm3+ the temperature dependence of nonradiative rest premiums is intricat