Optical properties of Dy3+ ions in La3Ga5SiO14 crystal

✍ Scribed by Wang, Zengmei ;Sun, Wei

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 219 KB
• Volume: 208
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.201127323

✦ Synopsis

Abstract

The absorption and fluorescence spectra of Dy^3+^‐doped La~3~Ga~5~SiO~14~ (LGS) crystals were measured and analyzed according to the Judd–Ofelt theory. When applied, the following spectral parameters have been obtained: phenomenological intensity parameters Ω~t~, Ω~2~ = 2.64 × 10^−20^ cm^2^, Ω~4~ = 1.39 × 10^−20^ cm^2^ and Ω~6~ = 0.63 × 10^−20^ cm^2^. These intensity parameters were used to predict radiative properties that included electronic line strengths, radiative transition probabilities A~J″,J′~, the radiative lifetime τ~rad~, the fluorescence branching ratios β~J″,J′~. The value of absorption section σ~abs~(λ), and the integrated emission cross sections σ~em~(λ) were also calculated. The emission transition ^4^F~9/2~ → ^6^H~13/2~ provides potential applications of LGS:Dy crystal as a laser material.