LITTLE KNOWN FACTS ABOUT ER:YB:YAB CRYSTAL.

The nonradiative transition charges Stick to the formula WNR = W (0) exp(-alphap), in which p is the quantity of phonons matching the Electricity gap. The nonradiative transition charges of Er3+ show temperature dependence in step with the multiphonon relaxation idea. In Tm3+ the temperature dependence of nonradiative relaxation fees is intricate b