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A high-power high-stability Q-switched green laser with intracavity frequency doubling using a diode-pumped composite ceramic Nd:YAG laser 被引量:7
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作者 王与烨 徐德刚 +2 位作者 刘长明 王卫鹏 姚建铨 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第9期315-320,共6页
We successfully obtain a high-average-power high-stability Q-switched green laser based on diode-side-pumped composite ceramic Nd:YAG in a straight piano-concave cavity. The temperature distribution in composite cera... We successfully obtain a high-average-power high-stability Q-switched green laser based on diode-side-pumped composite ceramic Nd:YAG in a straight piano-concave cavity. The temperature distribution in composite ceramic Nd:YAG crystal is numerically analyzed and compared with that of conventional Nd:YAG crystal. By using a composite ceramic Nd:YAG rod and a type-II high gray track resistance KTP (HGTR-KTP) crystal, a green laser with an average output power of 165 W is obtained at a repetition rate of 25 kHz, with a diode-to-green optical conversion of 14.68%, and a pulse width of 162 ns. To the best of our knowledge, both the output power and optical-to-optical efficiency are the highest values for green laser systems with intracavity frequency doubling of this novel composite ceramic Nd:YAG laser to date. The power fluctuation at around 160 W is lower than 0.3% in 2.5 hours. 展开更多
关键词 high-average-power green laser high stability composite ceramic Nd:yag rod
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Fabrication and laser output of transparent Nd:YAG ceramics from microwave synthesized precursors
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作者 ZHANG Xiaolin LIU Duo WANGJiyang YU Haohai QIN Haiming SANG Yuanhua LIU Hong 《Rare Metals》 SCIE EI CAS CSCD 2011年第6期607-615,共9页
We report the laser output of transparent Nd:YAG (Nd:Y3Al5O12) ceramics fabricated from Nd:YAG precursors through the microwave-assisted homogenous precipitation (MAHP) method. Pure phase and uniform Nd:YAG na... We report the laser output of transparent Nd:YAG (Nd:Y3Al5O12) ceramics fabricated from Nd:YAG precursors through the microwave-assisted homogenous precipitation (MAHP) method. Pure phase and uniform Nd:YAG nano-powders with average sizes less than 100 nm were obtained by heating treatment of.the Nd:YAG precursor particles aged for 6 d in vessel with humidity of 30%-50% at 25℃. Transparent Nd:YAG ceramic pellets were obtained by vacuum sintering at 1730℃ for 10 h. Laser output (305 roW) with a slope efficiency of 5.1% was realized through an end-pumped configuration. Our results indicate that the MAHP method could potentially be used for the fabrication of laser ceramic products, 展开更多
关键词 PRECIPITATION Nd:yag transparent ceramics laser output
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High-Power Dual-End-Pumped Actively Q-Switched Ho:YAG Ceramic Laser
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作者 段小明 袁晋鹤 +3 位作者 姚宝权 戴通宇 李江 潘裕柏 《Chinese Physics Letters》 SCIE CAS CSCD 2015年第10期34-36,共3页
We present a high-power Ho:YAG ceramic laser pumped at 1908nm. Using a dual-end-pumped structure, the maximum continuous-wave output power of 48 W is obtained, corresponding to a slope efficiency of 70.4% with respec... We present a high-power Ho:YAG ceramic laser pumped at 1908nm. Using a dual-end-pumped structure, the maximum continuous-wave output power of 48 W is obtained, corresponding to a slope efficiency of 70.4% with respect to the absorbed pump power. At actively Q-switched mode, the maximum average output power of 46 W and the minimum pulse width of 21 ns are achieved at a pulse repetition frequency of 20 kHz, corresponding to a peak power of approximately 109.5kW. In addition, the beam-quality M2 factor is found to be 1.4 at the maximum output power. 展开更多
关键词 yag HO High-Power Dual-End-Pumped Actively Q-Switched Ho:yag ceramic laser
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A Mid-IR Optical Parametric Oscillator Pumped by an Actively Q-Switched Ho:YAG Ceramic Laser
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作者 袁晋鹤 段小明 +5 位作者 姚宝权 李江 申英杰 崔铮 戴通宇 潘裕柏 《Chinese Physics Letters》 SCIE CAS CSCD 2015年第8期87-89,共3页
We demonstrate a mid-IR ZnGeP2 (ZGP) optical parametric oscillator (OPO) pumped by a dual-end-pumped actively aeoasto-optie Q-switched Ho:YAG ceramic laser. The maximum average output power of 35 W is obtained at... We demonstrate a mid-IR ZnGeP2 (ZGP) optical parametric oscillator (OPO) pumped by a dual-end-pumped actively aeoasto-optie Q-switched Ho:YAG ceramic laser. The maximum average output power of 35 W is obtained at a pulse repetition frequency of 20 kHz from the Ho:YAG ceramic laser. Under the maximum incident pump power of Ho:YAG ceramic laser, the maximum output power of 14 W is obtained from the ZGP OPO, corresponding to the slope efficiency of 49.6% with respect to the incident pump power. The wavelength can be tuned from 3.5 μm to 4.2μm (signal), corresponding to 5.24.1 μm (idler). The beam quality M2 is less than 2.3 from the ZGP OPO. 展开更多
关键词 yag Ho OPO A Mid-IR Optical Parametric Oscillator Pumped by an Actively Q-Switched Ho:yag ceramic laser IR
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Single-frequency distributed Bragg reflector Tm:YAG ceramic derived all-glass fiber laser at 1.95 μm
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作者 Guo-Quan Qian Min-Bo Wu +5 位作者 Guo-Wu Tang Min Sun Dong-Dan Chen Zhi-Bin Zhang Hui Luo Qi Qian 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第12期253-257,共5页
A 135 mW single-frequency distributed Bragg reflector fiber laser at 1.95μm was obtained based on a Tm:YAG ceramic-derived all-glass fiber.The fiber laser achieved an optical signal-to-noise ratio of~77 d B.Moreover,... A 135 mW single-frequency distributed Bragg reflector fiber laser at 1.95μm was obtained based on a Tm:YAG ceramic-derived all-glass fiber.The fiber laser achieved an optical signal-to-noise ratio of~77 d B.Moreover,the threshold and linewidth of the single-frequency laser were measured to be 15.4 mW and 4.5 kHz,respectively.In addition,the measured relative intensity noise was less than-140 d B·Hz^(-1)at frequencies of over 10 MHz.The results show that the as-drawn Tm:YAG ceramic-derived all-glass fiber is highly promising for~2μm single-frequency fiber laser applications. 展开更多
关键词 all-glass fiber SINGLE-FREQUENCY 2μm fiber laser Tm:yag ceramic derived
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Efficient Diode-Pumped Actively Q-Switched Ceramic Nd:YAG/YVO4 Raman Laser Operating at 1657 nm
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作者 张华年 陈晓寒 +1 位作者 王青圃 李平 《Chinese Physics Letters》 SCIE CAS CSCD 2015年第1期56-58,共3页
A diode-pumped actively Q-switched Raman laser is demonstrated, with YV04 employed as Raman active medium, based on a ceramic Nd:YAG laser operating at 1444nm. The first-stokes Raman generation at 1657nm is achieved.... A diode-pumped actively Q-switched Raman laser is demonstrated, with YV04 employed as Raman active medium, based on a ceramic Nd:YAG laser operating at 1444nm. The first-stokes Raman generation at 1657nm is achieved. A maximum output power of as high as 612mW is obtained under a pump power of 20. 7 W and at a pulse repetition frequency rate of 20kHz, corresponding to an optical-to-optical conversion efficiency of 3%. 展开更多
关键词 yag Ra Efficient Diode-Pumped Actively Q-Switched ceramic Nd:yag/YVO4 Raman laser Operating at 1657 nm kHz Nd
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Effect of Heat Treatment on Crystallization of Nd:YAG Ceramics 被引量:1
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作者 张华山 苏春辉 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2007年第2期333-336,共4页
(Nd0.01Y0.99)3Al5O12 nano-sized powders were synthesized by low temperature combustion (LCS), using Nd2O3, Y2O3, Al(NO3)3.9H2O, ammonia water and citric acid as starting materials. The powders were characterized... (Nd0.01Y0.99)3Al5O12 nano-sized powders were synthesized by low temperature combustion (LCS), using Nd2O3, Y2O3, Al(NO3)3.9H2O, ammonia water and citric acid as starting materials. The powders were characterized by TG-DTA, XRD, FT-IR, ICP and TEM, respectively. The grain sizes were calculated by the Scherrer's formula using the full width at half maximum (FWHM) of YAG (420) crystal plane diffraction lines. The study focused on crystallization of ceramics at different heat treatment temperatures. The experimental results show that crystallizing temperature of YAG is 850 ℃, and the intermediate crystal phase YAP, appearing during heat treatment, transforms to YAG cubic crystal phase at the temperature of 1 050℃. The particle size of the powders synthesized by LCS is nano-sized. With the temperature increasing, the mean grain sizes raise, the stand deviations keep almost at the value of 2.0 and the lattice parameters decrease. The grains mainly grow by grain boundary diffusion. The lattice parameter expansion is caused by an increase of the repulsive dipolar interactions on surfaces of crystallites, 展开更多
关键词 laser ceramics neodymium-doped yttrium aluminum garnet (Nd:yag nano-sized powders low temperature combustion synthesis (LCS)
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激光照明用YAG∶Ce-CaF_(2)荧光陶瓷的冷烧结制备
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作者 段星 杨仕林 +2 位作者 杜甫 陈磊 魏贤华 《西南科技大学学报》 CAS 2024年第1期31-37,共7页
荧光陶瓷是激光照明的关键材料。为探究低温制备荧光陶瓷的可行性,采用冷烧结工艺在425℃成功制备了致密度高、晶粒尺寸均匀、相界分明的YAG∶Ce-CaF_(2)复合荧光陶瓷。结果表明:发光相与基体之间没有可检测到的界面反应;制备的荧光陶... 荧光陶瓷是激光照明的关键材料。为探究低温制备荧光陶瓷的可行性,采用冷烧结工艺在425℃成功制备了致密度高、晶粒尺寸均匀、相界分明的YAG∶Ce-CaF_(2)复合荧光陶瓷。结果表明:发光相与基体之间没有可检测到的界面反应;制备的荧光陶瓷具有较高的量子效率(74.3%)、较好的热导率(室温可达9.4 W·m^(-1)·K^(-1))、优异的热稳定性(在400 K时发光强度仅损失4.3%);在蓝光激光(451 nm)激发下,复合荧光陶瓷表现出良好的黄光发射,并展现出光通量为910.7 lm和流明效率为91.07 lm·W^(-1)的高亮度白色激光照明,其荧光寿命无衰减(66 ns),相关色温为4483~8247 K,显色指数为73.4~83.6。冷烧结工艺是低温条件下制备性能优良荧光陶瓷的新方法。 展开更多
关键词 激光照明 冷烧结工艺 yag∶Ce-CaF_(2)荧光陶瓷
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Preparation of Neodymium-Doped Yttrium Aluminum Garnet Transparent Ceramics by Homogeneous Precipitation Method 被引量:5
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作者 苏春辉 张华山 +5 位作者 韩辉 宋琼 胡海德 张洪波 侯朝霞 邵晶 《Journal of Rare Earths》 SCIE EI CAS CSCD 2005年第6期716-720,共5页
substitutes tion, high loosely dis Neodymium doped-yttrium aluminum garnet (Nd : YAG) transparent polycrystalline ceramics already become of single crystals because they are provided with easy fabrication, low cost... substitutes tion, high loosely dis Neodymium doped-yttrium aluminum garnet (Nd : YAG) transparent polycrystalline ceramics already become of single crystals because they are provided with easy fabrication, low cost, large size, highly doped concentraheat conductivity, mass fabrication, multi-layers and multi-filnctions. The Nd:YAG precursor powders with persed , slightly agglomerated, super fine and YAG cubic crystal phase were synthesized at 1100 ℃ by the homogeneous precipitation method, using Nd2O3, Y2O3, Al(NO3)3·9H2O and urea as raw materials, (NH4)2SO4 as electrical stabilizer, TEOS as sintering additive. The Nd:YAG transparent ceramics were prepared after being vacuum sintered at 1700 ℃ for 5 h. The Nd:YAG ceramic materials were characterized by the TG-DTA, XRD, FT-IR, TEM, FEG-ESEM and FT-PL. The results show that the crystallization temperature of YAG is 850 ℃ and the intermediate crystal phase YAP forming during the heat treatment transforms to YAG cubic crystal phase at 1050 ℃. The lasing wavelength of (Nd0.01 Y0.99)3Al5O12 transparent ceramics is 1.065 μm and there exists a slight red-shift compared to the single crystal with the same chemical composition. The optical transmittance is 45 % in the visible light and 58 % in the near infrared light and the optical transmittance descends with the decreasing the wavelength. 展开更多
关键词 laser materials transparent ceramics neodymium-doped yttrium aluminum garnet (Nd:yag nano-sized powders low temperature combustion synthesis (LCS) rare earths
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Effects of laser processing parameters on solidification microstructures of ternary Al_2O_3/YAG/ZrO_2 eutectic in situ composite and its thermal property 被引量:4
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作者 苏海军 张军 +1 位作者 刘林 傅恒志 《中国有色金属学会会刊:英文版》 EI CSCD 2009年第6期1533-1538,共6页
Rapid surface resolidification with a high powered CO2-laser was performed in preparing directionally solidified Al2O3/YAG/ZrO2 ternary eutectic ceramic in situ composite.The effects of laser processing parameters on ... Rapid surface resolidification with a high powered CO2-laser was performed in preparing directionally solidified Al2O3/YAG/ZrO2 ternary eutectic ceramic in situ composite.The effects of laser processing parameters on the solidification microstructure characteristics and thermal properties were studied by scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS),X-ray diffractometry(XRD)and synthetically thermal analysis(STA).Detailed investigations of the influence of laser power and scanning rate on the preparation and microstructural parameters of the ternary eutectic were presented.Moreover, the eutectic phase separation rule at high temperature was discussed.The results indicate that solidification microstructure of the ternary eutectic composite is greatly influenced by the laser processing parameters.The synthetically thermal analysis shows that the eutectic temperature of ternary Al2O3/YAG/ZrO2 composite is 1 738℃,well matching the phase diagram of Al2O3-Y2O3-ZrO2. 展开更多
关键词 共晶复合材料 原位复合材料 激光功率 三元复合 加工参数 定向凝固 热性能 扫描电子显微镜
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Fabrication,microstructures,and optical properties of Yb:Lu_(2)O_(3) laser ceramics from co-precipitated nano-powders 被引量:10
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作者 Ziyu LIU Guido TOCI +7 位作者 Angela PIRRI Barbara PATRIZI Yagang FENG Jiabei WEI Feng WU Zhaoxiang YANG Matteo VANNINI Jiang LI 《Journal of Advanced Ceramics》 SCIE CAS CSCD 2020年第6期674-682,共9页
The Yb:Lu_(2)O_(3)precursor made up of spherical particles was synthesized through the co-precipitation method in the water/ethanol solvent.The 5 at% Yb:Lu_(2)O_(3)powder is in the cubic phase after calcination at 110... The Yb:Lu_(2)O_(3)precursor made up of spherical particles was synthesized through the co-precipitation method in the water/ethanol solvent.The 5 at% Yb:Lu_(2)O_(3)powder is in the cubic phase after calcination at 1100℃ for 4 h.The powder also consists of spherical nanoparticles with the average particle and grain sizes of 96 and 49 nm,respectively.The average grain size of the pre-sintered ceramic sample is 526 nm and that of the sample by hot isostatic pressing grows to 612 nm.The 1.0 mm-thick sample has an in-line transmittance of 81.6%(theoretical value of 82.2%)at 1100 nm.The largest absorption cross-section at 976 nm is 0.96×1^(0-20)cm^(2) with the emission cross-section at 1033 nm of 0.92×10^(-20)cm^(2) and the gain cross sections are calculated with the smallest population inversion parameter β of 0.059.The highest slope efficiency of 68.7% with the optical efficiency of 65.1% is obtained at 1033.3 nm in quasi-continuous wave(QCW)pumping.In the case of continuous wave(CW)pumping,the highest slope efficiency is 61.0% with the optical efficiency of 54.1%.The obtained laser performance indicates that Yb:Lu_(2)O_(3)ceramics have excellent resistance to thermal load stresses,which shows great potential in high-power solid-state laser applications. 展开更多
关键词 Yb:Lu_(2)O_(3)transparent ceramics co-precipitated nano-powder spectroscopic properties laser performance hot isostatic pressing
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Cr^(4+),Nd^(3+)∶YAG自调Q激光透明陶瓷的光谱性质 被引量:8
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作者 李江 吴玉松 +2 位作者 潘裕柏 朱勇 郭景坤 《发光学报》 EI CAS CSCD 北大核心 2007年第2期219-224,共6页
以高纯α-Al2O3、Y2O3、Nd2O3和Cr2O3粉体为原料,CaO为电荷补偿剂,正硅酸乙酯(TEOS)为烧结助剂,采用固相反应法和真空烧结技术成功制备了高质量的Cr4+,Nd3+∶YAG透明陶瓷。研究了其在室温下的吸收光谱和发射光谱性质,0.1%Cr,1.0%Nd∶YAG... 以高纯α-Al2O3、Y2O3、Nd2O3和Cr2O3粉体为原料,CaO为电荷补偿剂,正硅酸乙酯(TEOS)为烧结助剂,采用固相反应法和真空烧结技术成功制备了高质量的Cr4+,Nd3+∶YAG透明陶瓷。研究了其在室温下的吸收光谱和发射光谱性质,0.1%Cr,1.0%Nd∶YAG(Cr,Nd为摩尔分数,下同)透明陶瓷在808nm处的吸收截面为4.27×10-20cm2,1064nm处的发射截面和荧光寿命分别为1.52×10-20cm2和206μs。由Cr4+,Nd3+∶YAG透明陶瓷的吸收和发射光谱计算出的吸收和发射截面,进一步估算了材料的激光性能参数,并对其激光性能进行理论预测。Cr,Nd∶YAG透明陶瓷很可能是一种具有潜力的自调Q激光材料。 展开更多
关键词 CR ND:yag透明陶瓷 光谱性质 激光性能参数 自调Q激光
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激光快速熔凝Al_2O_3/YAG共晶陶瓷的制备与组织 被引量:11
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作者 苏海军 张军 +1 位作者 刘林 傅恒志 《北京航空航天大学学报》 EI CAS CSCD 北大核心 2007年第7期846-850,共5页
采用激光快速熔凝技术制备Al2O3/YAG共晶自生复合陶瓷,研究Al2O3/YAG共晶陶瓷在高能激光束作用下,不同扫描速率(0.01~2.0 mm/s)、超高温度梯度下的凝固组织特征及其生长机制,探索激光熔凝过程控制参数与凝固组织的关系.研究结果表明... 采用激光快速熔凝技术制备Al2O3/YAG共晶自生复合陶瓷,研究Al2O3/YAG共晶陶瓷在高能激光束作用下,不同扫描速率(0.01~2.0 mm/s)、超高温度梯度下的凝固组织特征及其生长机制,探索激光熔凝过程控制参数与凝固组织的关系.研究结果表明:激光熔凝Al2O3/YAG共晶陶瓷由无规则连续分布的Al2O3相和YAG相两相组成,没有晶界和其他相,Al2O3相的体积分数为(45.0±2.0)%,两相耦合生长,交错分布,是典型的快速凝固层片状非规则共晶组织;共晶层间距细密,并随激光扫描速度的增大而减小,扫描速度为0.02 mm/s时,共晶间距约为1~2 μm,扫描速度为2.0 mm/s时,共晶间距仅为0.5 μm左右;综合热分析表明,Al2O3/YAG共晶熔点为2 096 K,与相图吻合. 展开更多
关键词 激光熔凝 Al2O3/yag 共晶自生复合陶瓷 微观组织 高温度梯度
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激光区熔定向凝固Al_2O_3/Y_3Al_5O_(12)(YAG)共晶的组织与断裂韧性 被引量:6
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作者 苏海军 张军 +1 位作者 刘林 傅恒志 《材料科学与工艺》 EI CAS CSCD 北大核心 2007年第6期741-745,共5页
采用激光区熔高温度梯度快速定向凝固技术从熔体中直接制备Al2O3/Y3Al5O12(YAG)共晶自生复合陶瓷,以研究其在超高温度梯度(1.0×10^6K/m)下的快速凝固组织特征及与激光工艺参数的关系,并对其力学性质进行分析.研究结果表... 采用激光区熔高温度梯度快速定向凝固技术从熔体中直接制备Al2O3/Y3Al5O12(YAG)共晶自生复合陶瓷,以研究其在超高温度梯度(1.0×10^6K/m)下的快速凝固组织特征及与激光工艺参数的关系,并对其力学性质进行分析.研究结果表明:凝固组织强烈地受激光扫描速度与功率密度的影响,当二者匹配时,Al2O3相和Y3Al5O12(YAG)相呈现均匀一致,连续分布的层状耦合共晶结构,共晶间距细小(1~2μm),且随扫描速度的增大逐渐减小;所制备的Al2O3/Y3Al5O12(YAG)共晶陶瓷硬度高达19.5GPa,断裂韧性达到3.6MPa·m^1/2。 展开更多
关键词 AL2O3 /Y3Al5O12(yag) 共晶自生复合陶瓷 激光区熔
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Al_2O_3/YAG共晶自生复合陶瓷的激光熔凝实验研究 被引量:7
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作者 张军 苏海军 刘林 《航空材料学报》 EI CAS CSCD 2003年第z1期171-174,共4页
开展了Al_2O_3/YAG共晶自生复合陶瓷的激光熔凝制备技术的实验研究,研究结果表明:(1)激光扫描速率与功率密度的匹配对激光熔凝实验起着决定性的作用。调整工艺参数,可以获得表面光滑、平整、致密的熔凝层,且无宏观孔隙及裂纹。随扫描速... 开展了Al_2O_3/YAG共晶自生复合陶瓷的激光熔凝制备技术的实验研究,研究结果表明:(1)激光扫描速率与功率密度的匹配对激光熔凝实验起着决定性的作用。调整工艺参数,可以获得表面光滑、平整、致密的熔凝层,且无宏观孔隙及裂纹。随扫描速率的增大,熔凝层变薄;(2)激光熔凝Al_2O_3/YAG共晶自生复合陶瓷由Al_2O_3相和YAG相两相组成,具有典型的快凝层状共晶组织,共晶间距非常细小。 展开更多
关键词 Al2O3/yag 共晶自生复合陶瓷 激光熔凝
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不同功率的Er∶YAG激光对白榴石玻璃陶瓷与树脂粘接面粘接强度的影响 被引量:4
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作者 秦娇娇 马昂 +5 位作者 王静 吴庆翠 李怡然 朱亚平 焦珊 王成坤 《吉林大学学报(医学版)》 CAS CSCD 北大核心 2020年第5期942-947,共6页
目的:探讨掺铒钇铝石榴石(Er∶YAG)激光处理后白榴石玻璃陶瓷与树脂粘接面剪切粘接强度(SBS)和表面形貌的变化,阐明不同功率Er∶YAG激光作为预处理方式对于瓷修复体粘接面粘接强度的影响,为其临床应用提供参考。方法:将IPS Empress CAD... 目的:探讨掺铒钇铝石榴石(Er∶YAG)激光处理后白榴石玻璃陶瓷与树脂粘接面剪切粘接强度(SBS)和表面形貌的变化,阐明不同功率Er∶YAG激光作为预处理方式对于瓷修复体粘接面粘接强度的影响,为其临床应用提供参考。方法:将IPS Empress CAD玻璃陶瓷块制备成84个7 mm×6 mm×3 mm的瓷片样本,并根据表面处理方法不同随机分为对照组、酸蚀组、2 W激光组、4 W激光组、6 W激光组、8 W激光组和10 W激光组,每组12个样本。除对照组外对其余各组样本进行表面处理,酸蚀组使用9.5%氢氟酸处理,2 W激光组、4 W激光组、6 W激光组、8 W激光组和10 W激光组分别使用功率为2、4、6、8和10 W的Er∶YAG激光处理。样本表面处理完成后,各组分别选取10个样本采用电子万能试验机检测处理后表面与树脂粘接后的SBS值,然后采用光学立体显微镜观察粘接失效模式。各组剩余2个样本采用扫描电镜(SEM)观察处理后的表面形貌改变。结果:与对照组比较,其他各组样本SBS值均升高(P<0.01);2 W激光组、4 W激光组、6 W激光组、8 W激光组和10 W激光组样本SBS值依次升高,各组间样本SBS值比较差异有统计学意义(P<0.01);与酸蚀组比较,2 W激光组、4 W激光组、6 W激光组和8 W激光组SBS值均降低(P<0.01),10 W激光组样本SBS值差异无统计学意义(P>0.05)。失效模式观察,各组样本失效模式均以粘合剂失效为主,偶见混合失效,无内聚失效。SEM观察,对照组样本表面光滑无变化;酸蚀组样本表面可见许多深浅不一的不规则凹槽,呈现出明显的“蜂窝状”结构;2 W激光组样本表面可见小范围的瓷层剥脱形成的凹坑状改变,4 W激光组样本表面凹坑的面积和深度有所增加,6 W激光组样本表面可见连续的大块剥脱,8 W激光组和10 W激光组样本表面可见凹坑数量增多,呈现出明显的“鳞片状”外观。结论:随着Er∶YAG激光辐照功率的增加,白榴石玻璃陶瓷与树脂之间表现出逐步升高的粘接强度和逐渐粗糙的表面形貌改变,当激光辐照功率达到10W时,能够获得与氢氟酸处理相近的效果。 展开更多
关键词 掺铒钇铝石榴石激光 白榴石 玻璃陶瓷 粘接强度
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660nm单一波长Nd∶YAG陶瓷激光器 被引量:2
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作者 谭雪春 武志超 梁柱 《光子学报》 EI CAS CSCD 北大核心 2010年第10期1762-1765,共4页
针对陶瓷晶体1319nm的谱线设计了适合的谐振腔腔镜膜系参量,采用激光二极管列阵侧向抽运掺杂1.1at%、Φ3×50mm的Nd∶YAG陶瓷,利用色散棱镜及KTP晶体Ⅱ类匹配腔内倍频,研制了一台660nm单一波长输出的高重频Nd∶YAG陶瓷红光激光器.... 针对陶瓷晶体1319nm的谱线设计了适合的谐振腔腔镜膜系参量,采用激光二极管列阵侧向抽运掺杂1.1at%、Φ3×50mm的Nd∶YAG陶瓷,利用色散棱镜及KTP晶体Ⅱ类匹配腔内倍频,研制了一台660nm单一波长输出的高重频Nd∶YAG陶瓷红光激光器.根据陶瓷晶体的热透镜焦距设计了谐振腔的各个参量,在重复频率为1000Hz、单脉冲抽运能量约144mJ时,获得了3.9mJ的660nm脉冲激光输出,总的光-光转换效率为2.71%.为进一步研究大功率、高效率的陶瓷红光激光器奠定了基础. 展开更多
关键词 激光器 660nm单一波长 腔内倍频 Nd∶yag陶瓷
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压电陶瓷的Nd∶YAG准脉冲激光打孔研究 被引量:1
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作者 郭栋 邵天敏 +1 位作者 李龙土 桂治轮 《压电与声光》 CSCD 北大核心 2002年第2期104-106,138,共4页
由于陶瓷材料硬而脆的特性使其难以加工 ,对于形状复杂的陶瓷聚合物复合材料更是如此。根据 3- 1压电复合材料的结构特征和激光加工的特点 ,文章以声光调 Q Nd∶ YAG准脉冲激光器为工具研究了两种压电陶瓷钻孔的最佳条件及激光器参数对... 由于陶瓷材料硬而脆的特性使其难以加工 ,对于形状复杂的陶瓷聚合物复合材料更是如此。根据 3- 1压电复合材料的结构特征和激光加工的特点 ,文章以声光调 Q Nd∶ YAG准脉冲激光器为工具研究了两种压电陶瓷钻孔的最佳条件及激光器参数对孔结构的影响 ,提出了一种简便的制备 3- 1压电复合材料的方法。实验表明 ,孔尺寸主要由激光功率决定 ,而孔的截面形状主要由光束入焦情况决定。通过调节激光参数 ,易制得直径 0 .15mm ,长径比大于 展开更多
关键词 压电复合材料 锆钛酸铅 压电陶瓷 ND:yag 准脉冲激光打孔
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High recorded color rendering performance of single-structured Ce,Mn:Y_(3)(Al,Sc)_(2)Al_(3)O_(12)phosphor ceramics for high-power white LEDs/LDs
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作者 Xuanchu Liu Congcong Yang +10 位作者 Yanbin Li Chang Min Jian Kang Tianyuan Zhou Chunming Zhou Chaofan Shi Cen Shao Bingheng Sun Wieslaw Strek Hao Chen Le Zhang 《Journal of Advanced Ceramics》 SCIE EI CAS CSCD 2024年第6期810-820,共11页
Achieving a high color rendering index(CRI)and luminous stability in single-structured Ce:Y_(3)Al_(5)O_(12)(Ce:YAG)phosphor ceramics(PCs)is crucial for high-power white light-emitting diodes or laser diodes(LEDs/LDs).... Achieving a high color rendering index(CRI)and luminous stability in single-structured Ce:Y_(3)Al_(5)O_(12)(Ce:YAG)phosphor ceramics(PCs)is crucial for high-power white light-emitting diodes or laser diodes(LEDs/LDs).However,cyan valleys and insufficient amounts of the red component in the Ce:YAG emission spectra significantly limit their real applications.In this work,a series of Ce,Mn:Y_(3)(Al,Sc)_(2)Al_(3)O_(12)(Ce,Mn:YSAG)PCs were fabricated by vacuum sintering,and efficient spectral regulation was realized for full-color lighting.The cyan valley was filled by the blueshifted emission peak of Ce^(3+)via Sc^(3+)doping.The orange‒red emission at approximately 580 nm was effectively supplemented via Mn^(2+)doping.In particular,CRI of Ce,Mn:YSAG increased from 56.4 to 85.8,a 52%increase compared with that of Ce:YAG under high-power LED excitation,and the operating temperature was stable at approximately 50℃for long working time.Moreover,CRI of 80.9 could still be obtained for PC-based white LDs.These results indicated that Ce,Mn:YSAG PC,which has excellent CRI and luminous stability,is an extremely promising color convertor for high-power white LEDs/LDs. 展开更多
关键词 color rendering index(CRI) color converter Ce:Y_(3)Al_(5)O_(12)(Ce:yag)phosphor ceramics(PCs) high-power white light-emitting diodes or laser diodes(LEDs/LDs) luminous stability
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YAG∶Ce^3+在激光照明应用中的研究进展 被引量:31
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作者 胡盼 丁慧 +6 位作者 刘永福 孙鹏 刘泽华 罗朝华 黄政仁 江浩川 蒋俊 《发光学报》 EI CAS CSCD 北大核心 2020年第12期1504-1528,共25页
基于激光二极管(Laser diode,LD)的照明和显示技术代表了半导体行业未来的重要发展方向之一,荧光转换材料是决定激光照明的能量效率和显示产品色彩品质的核心部件。黄色荧光转换材料Y3Al5O12∶Ce^3+(YAG∶Ce^3+)适合蓝光LD激发、效率高... 基于激光二极管(Laser diode,LD)的照明和显示技术代表了半导体行业未来的重要发展方向之一,荧光转换材料是决定激光照明的能量效率和显示产品色彩品质的核心部件。黄色荧光转换材料Y3Al5O12∶Ce^3+(YAG∶Ce^3+)适合蓝光LD激发、效率高、易于获得白光,仍然是目前最为广泛的研究对象。传统荧光粉加有机硅胶的封装模式热导率低,LD激发下存在烧蚀、发黑、失效等问题。LD高功率激发密度的特点引发了荧光材料封装技术革命性变革。为此,多形态、高热导率的远程荧光体应运而生。本综述主要对基于YAG∶Ce^3+荧光玻璃、荧光薄膜、荧光晶体、荧光陶瓷等不同形态材料的制备方法及其在LD照明应用中的性能研究进行了总结,对荧光转换材料和LD照明的发展进行了展望。 展开更多
关键词 yag∶Ce^3+ 荧光陶瓷 荧光玻璃 荧光薄膜 激光照明
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