Sm³⁺-doped (Ca, Mg, Zr)GGG crystal: A potential reddish-orange laser crystal

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• 作者：Wenlong Zhou ; Qingli Zhang ; Jin Xiao ; Jian qiao Luo ; Wenpeng Liu ; Haihe Jiang ; Shaotang Yin
• 关键词：Optical materials ; Crystal growth ; Optical properties ; Luminescence
• 刊名：Journal of Alloys and Compounds
• 出版年：2010
• 出版时间：18 February 2010
• 年：2010
• 卷：491
• 期：1-2
• 页码：618-622
• 全文大小：306 K

文摘

Sm³⁺ doped (Ca, Mg, Zr)GGG crystal has been grown by Czochralski technique. Its optical absorption, fluorescence and lifetime were studied. The refractive index and absorption cross-section were calculated. Judd–Ofelt theory was used to calculate the intensity parameters (Ω_t), the spontaneous emission probabilities, the branching ratios, electric-dipole line strengths, magnetic-dipole line strengths and the radiative lifetime of the state ⁴G_5/2. The stimulated emission cross-sections at 566, 613, 649, and 709 nm were calculated. The decay curve of the ⁴G_5/2 level of Sm³⁺ ions with relatively low concentration (0.27 mol/L) was nearly single exponential and the experiment fluorescence lifetime (τ_exp) was determined.