掺杂剂
材料科学
分析化学(期刊)
半最大全宽
折射率
Crystal(编程语言)
兴奋剂
光学
化学
光电子学
计算机科学
色谱法
物理
程序设计语言
作者
Lihe Zheng,Jianbin Zhao,Yangxiao Wang,Wei‐Chao Chen,Fangfang Ruan,Hui Lin,Yanyan Xue,Jian Liu,Yang Liu,Ruiqin Yang,Haifeng Lu,Xiaodong Xu,Liangbi Su
出处
期刊:Crystals
[Multidisciplinary Digital Publishing Institute]
日期:2021-07-31
卷期号:11 (8): 907-907
被引量:9
标识
DOI:10.3390/cryst11080907
摘要
Dy3+-doped CaF2-SrF2 crystals with various Dy3+ dopant concentrations were synthesized by multicrucible temperature gradient technology (MC-TGT). Dy:CaF2-SrF2 crystals were fluorite structured and crystallized in cubic Fm3¯m space group, as characterized by X-ray diffraction. The crystallographic site concentration was calculated from the measured density by Archimedes’ hydrostatic weighing principle. The optical transmission reached over 90% with a sample thickness of 1.0 mm. The Sellmeier dispersion formula was obtained following the measured refractive index in a mid-IR range of 1.7–11 μm. Absorption coefficients of 6.06 cm−1 and 12.71 cm−1 were obtained at 804 nm and 1094 nm in 15% Dy:CaF2-SrF2 crystal. The fluorescence spectra of 15 at.% Dy:CaF2-SrF2 showed the strongest wavelength peak at 2919 nm with a full width at half maximum (FWHM) of 267 nm under an excitation wavelength of 808 nm. The fluorescence lifetimes were illustrated for different Dy3+ dopant levels of 5%, 10% and 15%. The results indicate that the Dy:CaF2-SrF2 crystal is a promising candidate for compact mid-IR lasers.
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