| 掺钕钆镓石榴石激光晶体光谱分析 |
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| 引用本文： | 曾繁明,张莹,孙晶,刘景和.掺钕钆镓石榴石激光晶体光谱分析[J].光谱学与光谱分析,2009,29(5):1323-1326. |
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| 作者姓名： | 曾繁明 张莹 孙晶 刘景和 |
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| 作者单位： | 长春理工大学材料科学与工程学院,吉林长春,130022 |
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| 基金项目： | 教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 掺钕钆镓石榴石(Nd3+: Gd3 Ga5 O12,简称Nd : GGG)激光晶体是固体热容激光器的首选工作物质.采用提拉法生长了Nd:GGG晶体,测试了晶体的吸收及荧光光谱,并利用J-O理论计算了晶体的吸收及发射截面、强度参数、辐射跃迁概率、荧光分支比、荧光寿命等光谱参数.吸收光谱测试及计算结果发现,Nd:GGG晶体的最强吸收峰位于808 nm附近,主峰808 nm的吸收截面积σabs=4.35×10-20cm2,吸收线宽FWHM为8 nm,并且吸收峰强度随掺杂离子浓度的增加而增加.荧光光谱测试及计算结果表明,晶体的最强荧光发射峰位于1 062 nm附近,是Nd3+的4F3/2-4I11/2能级跃迁产生的荧光发射.主发射峰1 062 nm辐射跃迁概率AJJ'=1 832.01 s-1,荧光分支比βJJ=45.07%,荧光寿命τ=250 μs,受激发射截面σ(λ)=21.58×10-20cm2,较大的荧光分支比和受激发射截面易实现4F3/2-4I11/2通道的激光运转.
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| 关 键 词： | Nd:GGG激光晶体 吸收光谱 荧光光谱 光谱参数计算 |
| 收稿时间： | 2008/1/15 |
Spectroscopic Analysis of Nd:GGG Laser Crystal |
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| ZENG Fan-ming,ZHANG Ying,SUN Jing,LIU Jing-he.Spectroscopic Analysis of Nd:GGG Laser Crystal[J].Spectroscopy and Spectral Analysis,2009,29(5):1323-1326. |
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| Authors: | ZENG Fan-ming ZHANG Ying SUN Jing LIU Jing-he |
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| Institution: | ZENG Fan-ming,ZHANG Ying,SUN Jing,LIU Jing-he College of Material Science , Engineering of Changchun University of Science , Technology,Changchun 130022,China |
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| Abstract: | Neodymium-doped gadolinium gallium garnet(Nd:GGG)crystal is the best operation material of solid-state heat-capacity laser.In the present paper,Nd:GGG single crystal was grown by Czochralski(Cz)method.Fluorescence spectra and absorption spectra were measured.At the same time,the spectral parameters of Nd:GGG laser crystal were calculated by Judd-Ofelt theory,including absorption and emission cross-section,intensity parameters,radiative transition probability,fluorescence branch ratio and fluorescent lifetim... |
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| Keywords: | Nd:GGG laser crystal Absorption spectra Fluorescence spectra Calculation of spectral parameters |
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