Figure 16
From: Phase Transformation and Intense 2.7 μm Emission from Er3+ Doped YF3/YOF Submicron-crystals

The energy levels of Er3+ with relative transitions and the energy transfer processes between adjacent Er3+ ions.
From: Phase Transformation and Intense 2.7 μm Emission from Er3+ Doped YF3/YOF Submicron-crystals

The energy levels of Er3+ with relative transitions and the energy transfer processes between adjacent Er3+ ions.