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LD泵浦被动调Q-Yb^(3+)∶YAG微晶片激光器的优化设计 被引量:6
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作者 刘宗华 郑义 《发光学报》 EI CAS CSCD 北大核心 2013年第9期1219-1226,共8页
从速率方程出发,理论分析了泵浦功率、输出镜反射率、Cr4+∶YAG的初始透过率和长度、Yb3+∶YAG的长度对调Q激光器的重复频率、脉冲宽度、平均输出功率、峰值功率、输出脉冲能量和单脉冲能量利用率的影响。依据理论结果设计了一个窄脉冲... 从速率方程出发,理论分析了泵浦功率、输出镜反射率、Cr4+∶YAG的初始透过率和长度、Yb3+∶YAG的长度对调Q激光器的重复频率、脉冲宽度、平均输出功率、峰值功率、输出脉冲能量和单脉冲能量利用率的影响。依据理论结果设计了一个窄脉冲宽度、高峰值功率和脉冲能量的被动调Q-Yb3+∶YAG微晶片激光器。该激光器的脉冲宽度Δt=199 ps,峰值功率P m=1.04 MW,输出脉冲能量E=0.21 mJ。 展开更多
关键词 微晶片激光器 被动Q调制 yb3+∶yag Cr4+∶yag 速率方程
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YAG:Yb^(3+),Tm^(3+)纳米晶粉体的制备及其蓝色上转换发光 被引量:1
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作者 李锋锋 王少燕 +3 位作者 董翠芝 张明熹 杨瑜 沈毅 《化工新型材料》 CAS CSCD 北大核心 2010年第1期41-43,共3页
以稀土氧化物、硝酸铝为原料,采用溶胶-凝胶法合成了Yb3+、Tm3+共掺的钇铝石榴石(Y3Al5O12,YAG)纳米晶粉体。采用X射线衍射(XRD)确定了1200℃煅烧后的晶体粉为纯YAG结构,无杂质相,晶体尺寸约为90nm;该粉体在波长为980nm的半导体激光器... 以稀土氧化物、硝酸铝为原料,采用溶胶-凝胶法合成了Yb3+、Tm3+共掺的钇铝石榴石(Y3Al5O12,YAG)纳米晶粉体。采用X射线衍射(XRD)确定了1200℃煅烧后的晶体粉为纯YAG结构,无杂质相,晶体尺寸约为90nm;该粉体在波长为980nm的半导体激光器激发下发射出中心波长为487nm的蓝色上转换荧光,对应于Tm3+离子的1G4→3H6的跃迁。发光强度和激发功率关系的研究揭示了其为双光子过程,Tm3+的激发态吸收及Tm3+、Yb3+间的交叉驰豫型能量传递和是该上转换发光的主要机制。 展开更多
关键词 溶胶-凝胶 yag yb3+ Tm3+ 上转换发光
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Structural and Optical Properties of Ce^(3+), Yb^(3+) Co-doped YAG Films by Pulsed Laser Deposition
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作者 王银珍 LI Ning +5 位作者 DUAN Pingping DI Juqing ZHANG Liaolin CHU Benli HE Qinyu QIU Jianrong 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2015年第4期660-664,共5页
Ce3+, Yb3+ co-doped Y3Al5O12 films were prepared by pulse laser deposition. X-ray diffraction, X-ray photoelectron spectroscopy, photoluminescence spectra were used to characterize their structural and luminescent p... Ce3+, Yb3+ co-doped Y3Al5O12 films were prepared by pulse laser deposition. X-ray diffraction, X-ray photoelectron spectroscopy, photoluminescence spectra were used to characterize their structural and luminescent properties. Near-infrared quantum cutting from the films was observed via a cooperative energy transfer from Ce3+ to Yb3+ ions. The high quantum efficiency of the films implies that Ce3+,Yb3+ co-doped Y3A15O12 films have potential application by tuning the solar spectrum to enhance the efficiency of silicon solar cells. 展开更多
关键词 yag Ce3+ yb3 films pulsed laser deposition DOWNCONVERSION
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Er^(3+),Yb^(3+):Y_3Al_5O_(12)上转换发光纳米纤维的制备与表征 被引量:4
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作者 董相廷 高续波 +2 位作者 王进贤 范立佳 刘桂霞 《光学学报》 EI CAS CSCD 北大核心 2010年第7期1883-1890,共8页
为了获得新形貌的上转换发光纳米纤维材料,采用静电纺丝技术制备了PVP/[Y(NO3)3+Al(NO3)3+Er(NO3)3+Yb(NO3)3]复合纳米纤维,将其进行热处理,获得了Er3+,Yb3+∶Y3Al5O12(Er3+,Yb3+∶YAG)上转换发光纳米纤维。热分析(TG-DTA)表明,当焙烧... 为了获得新形貌的上转换发光纳米纤维材料,采用静电纺丝技术制备了PVP/[Y(NO3)3+Al(NO3)3+Er(NO3)3+Yb(NO3)3]复合纳米纤维,将其进行热处理,获得了Er3+,Yb3+∶Y3Al5O12(Er3+,Yb3+∶YAG)上转换发光纳米纤维。热分析(TG-DTA)表明,当焙烧温度高于550℃时,PVP/[Y(NO3)3+Al(NO3)3+Er(NO3)3+Yb(NO3)3]复合纳米纤维中水分、有机物和硝酸盐分解挥发完毕,样品不再失重,总失重率为90.2%。X射线衍射(XRD)分析表明,PVP/[Y(NO3)3+Al(NO3)3+Er(NO3)3+Yb(NO3)3]复合纳米纤维为非晶态,经900℃焙烧10 h后,获得了单相石榴石型的Er3+,Yb3+∶YAG发光纳米纤维。傅里叶变换红外光谱(FTIR)分析表明,当焙烧温度为900℃时,生成了Er3+,Yb3+∶YAG纳米纤维。扫描电子显微镜(SEM)分析表明,Er3+,Yb3+∶YAG纳米纤维的直径约75 nm,长度大于100μm。上转换发射光谱分析表明,该纤维在980 nm激光激发下发射出中心波长为522 nm和554 nm的绿色和650 nm的红色上转换荧光,对应于Er3+离子的2H11/2/4S3/2→4Il5/2跃迁和4F9/2→4Il5/2跃迁。对Er3+,Yb3+∶YAG纳米纤维的形成机理进行了讨论,该技术可以用来制备其他稀土石榴石型化合物纳米纤维。 展开更多
关键词 光学材料 纳米纤维 静电纺丝 yag Er3+ yb3+∶yag 上转换发光
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Energy transfer in co-and tri-doped Y3Al5O12 phosphors 被引量:3
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作者 K.Santhosh Kumar 娄朝刚 +6 位作者 谢宇飞 胡琳 A.Gowri Manohari 肖东 叶慧琪 唐靓 Didier Pribat 《Journal of Rare Earths》 SCIE EI CAS CSCD 2017年第8期775-782,共8页
Single-doped(Ce3+,Tb3+), co-doped(Ce3+-Tb3+, Ce3+-Yb3+, Tb3+-Yb3+) and tri-doped(Ce3+-Tb3+-Yb3+) Y3Al5O12 phosphors were synthesized by a solid-state reaction method. The XRD, excitation and emission ... Single-doped(Ce3+,Tb3+), co-doped(Ce3+-Tb3+, Ce3+-Yb3+, Tb3+-Yb3+) and tri-doped(Ce3+-Tb3+-Yb3+) Y3Al5O12 phosphors were synthesized by a solid-state reaction method. The XRD, excitation and emission spectra and the fluorescence lifetime of the samples were measured. The energy transfer mechanism was also investigated. The results showed that the energy transfer efficiency from Tb3+ to Ce3+ was 51% and the energy transfer efficiency from Ce3+ to Yb3+ was 63.1%. Concomitantly, both were more efficient than that from Ce3+ to Tb3+(7%) and from Tb3+ to Yb3+(10.2%). Also, the Yb3+ ions received energy mainly from Ce3+ ions in Ce3+-Tb3+-Yb3+ tri-doped Y3Al5O12 phosphors. Among these materials, Ce3+-Yb3+ co-doped YAG phosphors are a better choice than others as a down-conversion material due to their higher energy transfer efficiency. 展开更多
关键词 Ce3+-Tb3+-yb3 yag phosphors energy transfer down conversion rare earths
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Overview of the HiLASE project: high average power pulsed DPSSL systems for research and industry
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作者 M.Divoky M.Smrz +21 位作者 M.Chyla P.Sikocinski P.Severova O.Novak J.Huynh S.S.Nagisetty T.Miura J.Pila O.Slezak M.Sawicka V.Jambunathan J.Vanda A.Endo A.Lucianetti D.Rostohar P.D.Mason P.J.Phillips K.Ertel S.Banerjee C.Hernandez-Gomez J.L.Collier T.Mocek 《High Power Laser Science and Engineering》 SCIE CAS 2014年第2期1-10,共10页
An overview of the Czech national R&D project HiLASE(High average power pulsed laser) is presented. The project focuses on the development of advanced high repetition rate, diode pumped solid state laser(DPSSL) sy... An overview of the Czech national R&D project HiLASE(High average power pulsed laser) is presented. The project focuses on the development of advanced high repetition rate, diode pumped solid state laser(DPSSL) systems with energies in the range from mJ to 100 J and repetition rates in the range from 10 Hz to 100 kHz. Some applications of these lasers in research and hi-tech industry are also presented. 展开更多
关键词 DPSSL yb3+:yag thin-disk multi-slab PULSED high AVERAGE power laser
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