Nd∶GdYAG激光晶体的光谱分析及热学性能研究
O734%O657.3; 本文对所生长的Nd∶GdYAG晶体的吸收光谱和荧光光谱进行了测试,采用Judd-Ofelt理论对振子强度和线强、强度参数Ωt、4F3/2→4IJ能级间的跃迁概率、能级辐射寿命、荧光分支比等光谱参数进行了计算,相关数据与YAG、LuAG、YVO4等晶体进行了对比.Ωt计算得出 Ω2=(0.813±0.200)×10-20 cm2,Ω4=(3.381±0.187)× 10-20 cm2,Ω6=(5.135±0.278)×10-20 cm2,相比YAG、LuAG、YVO4等晶体,Nd∶GdYAG晶体的强度参数Ω2较大,表明Gd3+的掺入增大了基质的无序度.计算并拟合了 30...
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| Published in | 人工晶体学报 Vol. 53; no. 9; pp. 1504 - 1511 |
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| Main Authors | , , , , , |
| Format | Journal Article |
| Language | Chinese |
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先进激光技术安徽省实验室,合肥 230037%中国科学院合肥物质科学研究院,安徽光学精密机械研究所,光子器件与材料安徽省重点实验室,合肥 230031
15.09.2024
中国科学院合肥物质科学研究院,安徽光学精密机械研究所,光子器件与材料安徽省重点实验室,合肥 230031 中国科学技术大学,合肥 230026 先进激光技术安徽省实验室,合肥 230037 |
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| Online Access | Get full text |
| ISSN | 1000-985X |
| DOI | 10.3969/j.issn.1000-985X.2024.09.003 |
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| Abstract | O734%O657.3; 本文对所生长的Nd∶GdYAG晶体的吸收光谱和荧光光谱进行了测试,采用Judd-Ofelt理论对振子强度和线强、强度参数Ωt、4F3/2→4IJ能级间的跃迁概率、能级辐射寿命、荧光分支比等光谱参数进行了计算,相关数据与YAG、LuAG、YVO4等晶体进行了对比.Ωt计算得出 Ω2=(0.813±0.200)×10-20 cm2,Ω4=(3.381±0.187)× 10-20 cm2,Ω6=(5.135±0.278)×10-20 cm2,相比YAG、LuAG、YVO4等晶体,Nd∶GdYAG晶体的强度参数Ω2较大,表明Gd3+的掺入增大了基质的无序度.计算并拟合了 300～1 200 nm的吸收截面和折射率,其中808 nm处的吸收截面为5.0×10-20 cm2,1 064 nm处的折射率为1.80.实测4 F3/2能级的荧光寿命为228 μs,与计算的能级辐射寿命240μs接近;1 064 nm处的发射截面为1.23 × 10-19cm2,接近Nd∶YAG晶体的发射截面.室温下Nd∶GdYAG晶体的热导率为5.992 W/(m·K),略小于Nd∶YAG和Nd∶GGG,但大于Nd∶YVO4晶体.研究表明,Nd∶GdYAG是一种有应用前景的新型激光晶体材料. |
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| AbstractList | O734%O657.3; 本文对所生长的Nd∶GdYAG晶体的吸收光谱和荧光光谱进行了测试,采用Judd-Ofelt理论对振子强度和线强、强度参数Ωt、4F3/2→4IJ能级间的跃迁概率、能级辐射寿命、荧光分支比等光谱参数进行了计算,相关数据与YAG、LuAG、YVO4等晶体进行了对比.Ωt计算得出 Ω2=(0.813±0.200)×10-20 cm2,Ω4=(3.381±0.187)× 10-20 cm2,Ω6=(5.135±0.278)×10-20 cm2,相比YAG、LuAG、YVO4等晶体,Nd∶GdYAG晶体的强度参数Ω2较大,表明Gd3+的掺入增大了基质的无序度.计算并拟合了 300～1 200 nm的吸收截面和折射率,其中808 nm处的吸收截面为5.0×10-20 cm2,1 064 nm处的折射率为1.80.实测4 F3/2能级的荧光寿命为228 μs,与计算的能级辐射寿命240μs接近;1 064 nm处的发射截面为1.23 × 10-19cm2,接近Nd∶YAG晶体的发射截面.室温下Nd∶GdYAG晶体的热导率为5.992 W/(m·K),略小于Nd∶YAG和Nd∶GGG,但大于Nd∶YVO4晶体.研究表明,Nd∶GdYAG是一种有应用前景的新型激光晶体材料. |
| Abstract_FL | The adsorption and fluorescence spectra of the grown Nd∶GdYAG were measured.The spectral parameters,such as oscillator strength,line strength,intensity parameter Ωt,transition probability between 4F3/2→4IJ levels,radiation lifetime,and fluorescence branching ratio,were calculated with Judd-Ofelt theory.The calculated Ωtare Ω2=(0.813±0.200)×10-20 cm2,Ω4=(3.381±0.187)×10-20 cm2,Ω6=(5.135±0.278)×10-20 cm2,respectively.Compared with Nd-doped YAG,LuAG,YVO4,and other crystals,Nd∶GdYAG crystal has a larger Ω2,showing that the addition of Gd3+increases the disorder of the host.The absorption cross-section and refractive index in the range of 300～1 200 nm were calculated and fitted.The absorption cross-section at 808 nm is 5.0 × 10-20 cm2.The refractive index at 1 064 nm is 1.80.The measured fluorescence lifetime of 4F3/2 level is 228 μs,which is close to the calculated radiation lifetime of 240 μs.The emission cross-section at 1 064 nm is 1.23× 10-19 cm2,which is close to that of Nd∶YAG crystal.Addition,at room temperature,the thermal conductivity of Nd∶GdYAG crystal is 5.992 W/(m·K),which is slightly smaller than that of Nd∶YAG and Nd∶GGG,but larger than that of Nd∶YVO4 crystal.The results show that Nd∶GdYAG is a promising new laser crystal material. |
| Author | 罗建乔 刘文鹏 刘耀 王小飞 张庆礼 窦仁勤 |
| AuthorAffiliation | 中国科学院合肥物质科学研究院,安徽光学精密机械研究所,光子器件与材料安徽省重点实验室,合肥 230031;先进激光技术安徽省实验室,合肥 230037%中国科学院合肥物质科学研究院,安徽光学精密机械研究所,光子器件与材料安徽省重点实验室,合肥 230031;先进激光技术安徽省实验室,合肥 230037;中国科学技术大学,合肥 230026 |
| AuthorAffiliation_xml | – name: 中国科学院合肥物质科学研究院,安徽光学精密机械研究所,光子器件与材料安徽省重点实验室,合肥 230031;先进激光技术安徽省实验室,合肥 230037%中国科学院合肥物质科学研究院,安徽光学精密机械研究所,光子器件与材料安徽省重点实验室,合肥 230031;先进激光技术安徽省实验室,合肥 230037;中国科学技术大学,合肥 230026 |
| Author_FL | LIU Wenpeng DOU Renqin WANG Xiaofei LIU Yao ZHANG Qingli LUO Jianqiao |
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| DocumentTitle_FL | Spectral Analysis and Thermal Properties of Nd∶GdYAG Laser Crystal |
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| Keywords | Judd-Ofelt理论 Judd-Ofelt theory 光谱分析 spectral analysis laser crystal 热导率 激光晶体 thermal conductivity Nd∶GdYAG |
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| Publisher | 先进激光技术安徽省实验室,合肥 230037%中国科学院合肥物质科学研究院,安徽光学精密机械研究所,光子器件与材料安徽省重点实验室,合肥 230031 中国科学院合肥物质科学研究院,安徽光学精密机械研究所,光子器件与材料安徽省重点实验室,合肥 230031 中国科学技术大学,合肥 230026 先进激光技术安徽省实验室,合肥 230037 |
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| Snippet | O734%O657.3; 本文对所生长的Nd∶GdYAG晶体的吸收光谱和荧光光谱进行了测试,采用Judd-Ofelt理论对振子强度和线强、强度参数Ωt、4F3/2→4IJ能级间的跃迁概率、能级辐射寿命、荧光分支比等光谱参数进行了计算,相关数据与YAG、LuAG、YVO4等晶体进行了对比.Ωt计算得出... |
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| Title | Nd∶GdYAG激光晶体的光谱分析及热学性能研究 |
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