J4 ›› 2012, Vol. 29 ›› Issue (1): 45-51.

• 激光技术与器件 • 上一篇    下一篇

Er:GSGG 晶体的光谱性质分析及激光特性模拟研究

黄荔1,2, 郭强1,2, 罗建乔1,2, 王首长1,2, 周健1,2, 吴朝辉1,2   

  1. 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
  • 收稿日期:2011-03-03 修回日期:2011-04-06 出版日期:2012-01-28 发布日期:2012-01-28
  • 通讯作者: 郭强(1963-), 安徽合肥人,研究员,硕士生导师,主要从事激光集成技术研究 E-mail:qguo@aiofm.ac.cn
  • 作者简介:黄荔(1986-), 湖北孝感人,研究生,研究方向为固体激光技术,E-mail: hlychee@163.com
  • 基金资助:

    国家自然科学基金(5087213,90922003,50932005)和中科院知识创新工程项目(YYYJ-1002)资助

Spectroscopic properties analysis and laser characteristic simulation of Er:GSGG crystal

Huang Li1,2,Guo Qiang1,2,Luo Jianqiao1,2,Wang Shouzhang1,2, Zhou Jian1,2, Wu Zhaohui1,2   

  1. 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)
  • Received:2011-03-03 Revised:2011-04-06 Published:2012-01-28 Online:2012-01-28

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。

关键词: 光谱学, 光谱参数, Judd-Ofelt理论, 激光晶体

Abstract:

Absorption spectra, fluorescence spectra of Er:GSGG crystal were measured and investigated. The oscillator strength, spontaneous emission probability, energy level lifetime, emission branching ratio of Er3+ transitions were calculated according to the Judd-Ofelt theory, and also calculate stimulated absorption cross-section. It is found that the crystal has long lifetime at 4I13/2 and 4I11/2, large absorption cross-section at 965nm and 790nm, large stimulated emission cross-section at 2.79µm. Numerical simulation laser output characteristic with 965mn pumped, it has a large quantum efficiency when the pump rate at definite value. The result show that this crystal may be a suitable laser material at 2.79µm wave band.

Key words: spectroscopy, spectroscopy parameter, Judd-Ofelt theory, laser crystal

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