The results of the study of the charge state of the activator ([Ti³⁺], [Ti⁴⁺]) in Ti:sapphire crystals grown by the method of horizontal directed crystallization, are presented. It is shown that, depending on the pressure, ...

The spectral properties of Er,Yb co-doped Y₃Al₅O₁₂ single-crystals grown for the first time by modified horizontal directional crystallization method in reducing atmosphere Ar+(CO, H₂) are reported in the paper. Optical ...

For the first time Er³⁺-doped yttrium aluminum garnet single crystals were grown by modified horizontal directional crystallization method in the reducing atmosphere Ar+(CO, H₂). The absorption and photoluminescence spectra ...