| Er:GSGG 晶体的光谱性质分析及激光特性模拟研究 |
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| 引用本文： | 黄荔,郭强,罗建乔,王首长,周健,吴朝辉.Er:GSGG 晶体的光谱性质分析及激光特性模拟研究[J].量子电子学报,2012,29(1):45-51. |
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| 作者姓名： | 黄荔 郭强 罗建乔 王首长 周健 吴朝辉 |
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| 作者单位： | 1 中国科学院安徽光学精密机械研究所激光技术与应用研究室 安徽 合肥 230031；
2 安徽光子器件与材料省级实验室 安徽 合肥230031 |
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| 基金项目： | 国家自然科学基金(5087213,90922003,50932005);中科院知识创新工程项目(YYYJ-1002)资助课题 |
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| 摘 要： | 测试和分析了Er:GSGG的吸收光谱和荧光光谱。应用Judd-Ofelt理论计算了Er3+的强度参数、自发辐射跃迁几率、能级寿命、荧光分支比和吸收截面。结果表明，Er3+在4I13/2和4I11/2能级有较长的能级寿命，在966nm和790nm处有较大的吸收截面，在2.79µm处有较大的积分发射截面值，数值模拟了在966nm泵浦下激光输出特性，在泵浦速率达到一定值时，有较高的量子效率。结果表明Er:GSGG有望成为2.79µm波段的理想激光晶体。
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| 关 键 词： | 光谱学 光谱参数 Judd-Ofelt理论 激光晶体 |
| 收稿时间： | 2011/3/3 |
| 修稿时间： | 2011-04-06 |
Spectroscopic properties analysis and laser characteristic simulation of Er:GSGG crystal |
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| HUANG Li
,
GUO Qiang
,
LUO Jian-qiao
,
WANG Shou-zhang
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ZHOU Jian
,
WU Zhao-hui.Spectroscopic properties analysis and laser characteristic simulation of Er:GSGG crystal[J].Chinese Journal of Quantum Electronics,2012,29(1):45-51. |
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| Authors: | HUANG Li GUO Qiang LUO Jian-qiao WANG Shou-zhang ZHOU Jian WU Zhao-hui |
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| Affiliation: | 1 Laboratory of Laser Technology & Applications, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
2 Laboratory of Photonic Devices & Materials, Anhui Province, Hefei, 230031) |
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| Abstract: | Absorption and fluorescence spectra of Er:GSGG crystal were measured and investigated.The oscillator strength,spontaneous emission probability,energy level lifetime,emission branching ratio and absorption cross-section of Er3+ transitions were calculated according to the Judd-Ofelt theory.It is found that the crystal has long lifetime at 4I13/2 and 4I11/2,large absorption cross-section at 965 nm and 790 nm, large stimulated emission cross-section at 2.79μm.Laser output characteristics were simulated numerically with 965 nm pumping,where it has a large quantum efficiency when the pump rate reaches certain value. The results show that the crystal may be a suitable laser material at 2.79μm wave band. |
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| Keywords: | spectroscopy spectroscopy parameter Judd-Ofelt theory laser crystal |
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