On the nature of CT luminescence in Yb3+:YAG single crystal under low photon energy

Exploring the Impact of Nanorod Diameter on Near Infrared Laser-Induced Stokes and Anti-Stokes Emission in La1–xNdxAlO3

“…In the past decade, the most successful explanation was based on the intervalence charge transfer (IVCT), since this process is usually accompanied by absorption and emission in the visible region . In addition, the popularity of the IVCT model is based on the fact that a lot of papers deals with Yb-doped compounds, where charge transfer processes is often occurs. , A more detailed explanation of this model was well described by Seijo et al , …”

“…Recent results have shown that LIWE have a surface origin; in other words, white light can be generated only on the surface of the sample and not penetrate into the volume . Instead, charge transfer can occur within the bulk the sample, indicating that a different model should be proposed. We suppose that the multiphoton ionization model can be proposed to describe LIWE.…”