Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5488484 | Infrared Physics & Technology | 2017 | 7 Pages |
â¢A Dy-doped LaF3 sing crystal was successfully grown by the Bridgman method.â¢The spectral parameters of Dy:LaF3 crystal were calculated in detail.â¢Optical properties of Dy:LaF3 for â¼2.86â¯Î¼m and 570â¯nm lasers were systematically studied for the first time.
A Dy:LaF3 crystal was grown successfully by the Bridgman method, and X-ray diffraction results show that it is well-crystallized. The room temperature absorption spectra, fluorescence spectra and the fluorescence decay curves were measured. On the basis of J-O theory, the emission probabilities, branching ratios, and the radiation lifetimes of the 4F9/2 and 6H13/2 manifolds were calculated. The stimulated emission cross-sections of the 4F9/2â¯ââ¯6H13/2 transition (â¼570â¯nm) and the 6H13/2â¯ââ¯6H15/2 transition (â¼2.86â¯Î¼m) were obtained by the Fuchtbauer-Ladenburg equation. The fluorescence lifetime of the 4F9/2 and 6H13/2 manifolds are 1.37â¯ms and 9.73â¯ms, respectively. All these results were first investigated, indicating the Dy:LaF3 crystal a promising material for 570â¯nm and 2.86â¯Î¼m laser applications.