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Studies on Lead Tungstate Crystal

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Chinese Physics Letters 1998年第1期15卷 46-47页

作者： LIU Feng-zhen han jian-ru MAN Chang-feng CHEN Huan-chu HE Mao Department of Physics Shandong UniversityJi’nan 250100 Institute of Crystal Materials Shandong UniversityJi’nan 250100

The growth of lead tungstate(PWO)single crystals and their luminescence properties such as light yield,scintillation decay time,and transmittance were *** colourless PWO single crystal has been obtained by using the presyntheses ***,Nb,and Mg ions were doped in the crystals and the Ba-doped crystal has a relatively short decay *** crystal was found having a better transmission spectrum than that of unannealed one.

关键词： crystal decay annealed

Growth and Second-Harmonic-Generation Properties of Tm^(3+), Yb^(3+), Bi^(3+) and Li^(+) Doped GdCa_(4)O(BO_(3))_(3) Crystals

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Chinese Physics Letters 2001年第3期18卷 388-389页

作者： ZhanG Shu-Jun CHENG Zhen-Xiang ZhanG Shao-Jun LIU Jun-Hai han jian-ru WANG Ji-Yang CHEN Huan-Chu State Key Laboratory of Crystal Materials Shandong UniversityJi’nan 250100

The rare-earth ions(Yb^(3+),Tm^(3+))and Li^(+),Bi^(3+)ions doped GdCa_(4)O(BO_(3))_(3) crystals were grown using the Czochralski pulling *** second-harmonic-generation conversion efficiencies of the GdCOB:Yb and GdCOB:Tm crystals are 31.3%and 33.3%,respectively,while the undoped GdCOB crystal is 27.9%.The conversion efficiencies of Yb^(3+),Tm^(3+)doped GdCOB are improved by 12%and 19%,respectively,compared to that of the undoped *** conversion efficiencies of Li^(+),Bi^(3+)doped GdCOB crystals are 33%and 38.3%,which are improved by 15%and 37%as compared to that of the undoped *** results are discussed using the anion group theory.

关键词： Crystal (3) Harmonic

Effect of Strontium Ion on the Growth and Second-Harmonic Generation Properties of GdCa_(4)O(BO_(3))_(3) Crystal

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Chinese Physics Letters 2001年第1期18卷 63-64页

作者： ZhanG Shu-Jun CHENG Zhen-Xiang LIU Jun-Hai han jian-ru WANG Ji-Yang SHAO Zong-Shu CHEN Huan-Chu State Key Laboratory of Crystal Materials Shandong UniversityJi'nan 250100

Large sized and optical quality GdCa_(4)O(BO_(3))_(3)(GdCOB)crystal with calcium partially substituted by strontium(Sr)ions was grown for the first *** x-ray powder diffraction shows that the Sr ion has an effect on the cell parameters of the GdCOB crystal Second-harmonic generation(SHG)experiments were performed on the Sr:GdCOB and GdCOB crystals along the spatial phase-matching *** results show that the cw green laser output power is 1.04 W when the laser diode pump power is 10 W in the Nd:YVO_(4)/Sr:GdCOB intracavity *** the slope efficiency of Nd:YVO_(4) and the fundamental laser in cavity,the intracavity SHG conversion efficiency of the GdCOB crystal is 21%while it is 24%for the Sr:GdCOB crystal,the SHG conversion efficiency is improved by 14%.The effect of the Sr ions on the nonlinearity of the GdCOB crystal is also discussed by using the anion group theory.

关键词： intracavity pump Crystal

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掺钐钛酸铅铁电薄膜的制备和主要性质

压电与声光 2005年第1期27卷 59-61,64页

作者：杨长红王卓韩辉翟剑庞王民韩建儒山东大学晶体材料国家重点实验室山东济南250100

采用金属有机分解法(MOD)在P型Si(111)衬底上制备了Pb0.85Sm0.1TiO3(PST)薄膜。用X-射线衍射技术研究了退火温度对薄膜的结构和结晶性的影响。同时还研究了薄膜的介电、铁电和绝缘性能。结果发现在600°C下退火1h的PST薄膜呈钙钛矿结构;... 详细信息

采用金属有机分解法(MOD)在P型Si(111)衬底上制备了Pb0.85Sm0.1TiO3(PST)薄膜。用X-射线衍射技术研究了退火温度对薄膜的结构和结晶性的影响。同时还研究了薄膜的介电、铁电和绝缘性能。结果发现在600°C下退火1h的PST薄膜呈钙钛矿结构;在0～16V范围内,薄膜的漏电流小于1.17×10-7A;在±10V的偏压范围内,电容-电压(C-V)记忆窗口宽度为4.5V;在室温10kHz下,其介电常数为37.25,介电损耗为0.042。

关键词：金属有机分解法 Pb0.85Sm0.1TiO3 铁电薄膜

A New Nonlinear Optical Crystal GdCa_(4)O(BO_(3))_(3)

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Chinese Physics Letters 1999年第3期16卷 184-186页

作者： ZhanG Shu-jun CHENG Zhen-xiang ZhanG Shao-jun ZhanG Ji-guo han jian-ru CHEN Huan-chu National Laboratory of Crystal Materials Shandong UniversityJi’nan 250100

Large size and high quality single crystals GdCa_(4)O(BO_(3))_(3) have been grown from platinum crucible under air atmosphere by the conventional rf-heating Czochralski *** crystal growth conditions,growth habits,and transmission spectra were *** crystal is transparent in the visible and near-infrared region(320-2600nm).It has a good second harmonic generation phase-matching *** phase-matching experiment result is well consistent with the theoretical *** frequency-doubling efficiency is 26.7% in the phase-matching angles θ=45o and ø=45.1o direction.

关键词： Crystal matching doubling

化学溶液分解法制备Sm_(0.5)Bi_(3.5)Ti_3O_(12)铁电薄膜

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人工晶体学报 2006年第6期35卷 1265-1267页

作者：杨冬梅韩建儒袁春雪姜付义山东大学晶体材料国家重点实验室济南250100

采用化学溶液分解法(CSD)在S i衬底上制备了Sm0.5B i3.5Ti3O12(SmBT0.5)薄膜。用X射线衍射技术分析了薄膜的结构和结晶性,用原子力显微镜描述了薄膜的表面形貌;并研究了薄膜的存储性以及介电性能。结果表明,在700℃下退火1h得到了结晶... 详细信息

采用化学溶液分解法(CSD)在S i衬底上制备了Sm0.5B i3.5Ti3O12(SmBT0.5)薄膜。用X射线衍射技术分析了薄膜的结构和结晶性,用原子力显微镜描述了薄膜的表面形貌;并研究了薄膜的存储性以及介电性能。结果表明,在700℃下退火1h得到了结晶性较好,表面致密的多晶薄膜。该薄膜显示了良好铁电和介电性能。

关键词：化学溶液分解法 SmBT0.5 铁电薄膜