Bulk Crystal Growth, First-Principles Calculation, and Optical Properties of Pure and Er3+-Doped SrLaGa3O7 Single Crystals

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• 作者：Yan Wang ; Jianfu Li ; Zhaojie Zhu ; Zhenyu You ; Jinlong Xu ; Chaoyang Tu
• 刊名：Crystal Growth & Design
• 出版年：2016
• 出版时间：April 6, 2016
• 年：2016
• 卷：16
• 期：4
• 页码：2289-2294
• 全文大小：523K
• ISSN：1528-7505

文摘

High-quality bulk single crystals of pure and Er³⁺-doped SrLaGa₃O₇ (SLGO) were grown successfully by the Czochralski method. The crystal structure of SLGO was demonstrated. The theoretical calculations based on density functional theory methods were carried out on the SLGO crystal. Its band structure and density of state were presented. The absorption, up-conversion, near-infrared and mid-infrared fluorescence spectra, as well as the fluorescence decay curves of Er: ⁴I_13/2 and ⁴I_11/2 levels of the Er:SLGO crystal were measured at room temperature. The spectroscopic properties including the absorption and emission cross sections as well as the fluorescence lifetimes were revealed. It is concluded that the Er:SLGO crystal is a promising candidate material for achievement of a mid-infrared laser.