کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5461226 | 1516188 | 2017 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Growth, structure and spectroscopic properties of melilite Er: CaLaGa3O7 crystal for use in mid-infrared laser
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Single crystals of pure and Er3+ doped CaLaGa3O7 were firstly grown by the Czochralski technology. The structure of CaLaGa3O7 was investigated. The electronic structures of CaLaGa3O7 crystal were performed by using first-principles calculations based on density functional theory (DFT) methods. Its band structure and density of states were presented. The polarized absorption, emission spectra including up-conversion, near-infrared and mid-infrared fluorescence spectra, as well as the fluorescence decay curves of Er: CaLaGa3O7 crystal were measured at room temperature. Detailed spectroscopic analyses of Er: CaLaGa3O7 were carried out. Based on the Judd-Ofelt theory and the polarized absorption spectra, the spontaneous transition probabilities, the fluorescent branching ratios and the radiative lifetimes were calculated. The energy transfer mechanism in Er: CaLaGa3O7 crystal was also studied in this work. It concludes that Er: CaLaGa3O7 crystal can act as a promising candidate for mid-infrared lasers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 706, 5 June 2017, Pages 387-394
Journal: Journal of Alloys and Compounds - Volume 706, 5 June 2017, Pages 387-394
نویسندگان
Yunyun Liu, Yan Wang, Zhenyu You, Jianfu Li, Zhaojie Zhu, Chaoyang Tu,