Nonradiative transfer of excitation energy in crystals with the interaction of three optically active centers
Zhekov V. I. , Murina T. M., Prokhorov A. M. , Studenikin M. I. , Georgescu S. , Lupei A. , Lupei V.
It is shown that in oxide and fluoride crystals activated by Er3 + ions, there are different mechanisms of energy transfer, which are associated with the interactions of two and three optically active centers.