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稀土掺杂钨酸钆钠激光晶体的生长及性能研究

人工晶体学报 2008年第6期37卷 1301-1309页

作者：王鸿雁游振宇朱昭捷王燕吴柏昌涂朝阳中国科学院福建物质结构研究所福州350002

采用提拉法生长出纯的和Nd3+、Tm3+、Ho3+、Dy3+、Pr3+掺杂的大尺寸优质NaGd(WO4)2晶体。测定了晶体沿(001)和(100)方向的热膨胀系数。测定了晶体的折射率,得到了折射率的色散方程。测量了NaGd(WO4)2晶体的拉曼光谱,对晶体的振动性能进... 详细信息

采用提拉法生长出纯的和Nd3+、Tm3+、Ho3+、Dy3+、Pr3+掺杂的大尺寸优质NaGd(WO4)2晶体。测定了晶体沿(001)和(100)方向的热膨胀系数。测定了晶体的折射率,得到了折射率的色散方程。测量了NaGd(WO4)2晶体的拉曼光谱,对晶体的振动性能进行研究。对稀土离子掺杂的NaGd(WO4)2晶体进行了一系列的光谱性质研究,并进行了Judd-Ofelt理论计算。Nd3+:NaGd(WO4)2和Tm3+:NaGd(WO4)2晶体在800nm附近吸收峰的半高宽和吸收截面较大,有利于LD泵浦。测定了不同能级的荧光寿命,发现Nd3+:NaGd(WO4)2晶体具有较高的荧光量子效率。采用氙灯闪光灯作为泵浦源,研究了Nd3+:NaGd(WO4)2晶体1060nm的激光特性。

关键词：晶体生长光谱性能激光特性

稀土掺杂钨酸镧钠激光晶体的生长及其性能研究

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人工晶体学报 2008年第3期37卷 543-550,556页

作者：魏艳萍游振宇朱昭捷王燕吴柏昌涂朝阳中国科学院福建物质结构研究所福州350002

采用提拉法生长出了纯的和Nd3+、Tm3+、Dy3+、Ho3+、Pr3+离子掺杂的大尺寸优质的NaLa(WO4)2晶体。TG/DTA实验表明NaLa(WO4)2晶体在1251℃同成分熔化,热膨胀实验结果显示该晶体沿(100)和(001)方向的热膨胀系数分别为1.23×10-5K-1和2.49... 详细信息

采用提拉法生长出了纯的和Nd3+、Tm3+、Dy3+、Ho3+、Pr3+离子掺杂的大尺寸优质的NaLa(WO4)2晶体。TG/DTA实验表明NaLa(WO4)2晶体在1251℃同成分熔化,热膨胀实验结果显示该晶体沿(100)和(001)方向的热膨胀系数分别为1.23×10-5K-1和2.49×10-5K-1。在室温下测量了该晶体的红外和拉曼光谱,对晶体的振动性质进行了研究。对稀土离子掺杂的NaLa(WO4)2晶体进行了光谱性质的研究。Nd3+:NaLa(WO4)2和Tm3+:NaLa(WO4)2晶体800nm附近的吸收峰半高宽和吸收截面较大,有利于用LD泵浦。采用小型的氙灯泵浦,研究了Nd3+:NaLa(WO4)2晶体的激光特性。当氙灯输入能量为1.28J时,获得14.77mJ的激光输出能量,光光转换效率为1.15%。

关键词：晶体生长光谱性能激光特性

大尺寸优质激光晶体Nd^(3+)/Yb^(3+):NaY(WO_4)_2的生长和性能研究

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人工晶体学报 2011年第5期40卷 1087-1092页

作者：游振宇涂朝阳李坚富王燕朱昭捷刘英同中国科学院福建物质结构研究所中国科学院光电材料化学与物理重点实验室福州350002 中国科学院研究生院北京100049 长春理工大学长春130022

采用提拉法生长了尺寸为Φ25 mm×100 mm的大尺寸Nd3+与Yb3+掺杂的NaY(WO4)2晶体。对晶体的生长习性进行了讨论,利用XRD对晶体进行了相分析。测试了晶体的热膨胀特性,得到了主轴方向的热膨胀系数,测得沿c轴的膨胀系数大约为a轴的两倍。... 详细信息

采用提拉法生长了尺寸为Φ25 mm×100 mm的大尺寸Nd3+与Yb3+掺杂的NaY(WO4)2晶体。对晶体的生长习性进行了讨论,利用XRD对晶体进行了相分析。测试了晶体的热膨胀特性,得到了主轴方向的热膨胀系数,测得沿c轴的膨胀系数大约为a轴的两倍。在室温下测试了Yb3+掺杂的NaY(WO4)2晶体的吸收谱、荧光光谱和相关能级的荧光衰减,用标准与改进的J-O理论分析了吸收光谱与荧光光谱。结果表明,Yb3+掺杂的NaY(WO4)2晶体有着较好的光谱性能参数。采用氙灯泵浦Nd3+掺杂的NaY(WO4)2,实现了1.06μm波段786 mJ的激光输出,同时在LD泵浦下,采用LBO晶体倍频,实现了87 mW的激光输出,基频光光转换效率为25%,斜率效率为7.98%。

关键词： NaY(WO4)2 晶体生长光谱性能

GdAl3（BO3）4和Nd离子掺杂的倍频与自变频激光晶体研究

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人工晶体学报 2019年第10期48卷 1843-1853页

作者：涂朝阳朱昭捷李坚富游振宇王燕 Brenier Alain 中国科学院福建物质结构研究所福州350002 Laboratoire de Physico-Chimie des Matériaux Luminescents UMR CNRS 5620UniversitéClaude Bernard-Lyon169622 VilleurbanneFrance

采用熔盐顶部籽晶法从K 2 Mo 3 O 10-B 2 O 3助熔剂中生长出尺寸为20 mm的优质GdAl 3(BO 3)4(简称GAB)和Nd^3+激活的自变频激光晶体。确定了GAB晶体的透光波长范围、折射率和倍频系数随波长的变化,结果表明其在整个透光范围内均可实现... 详细信息

采用熔盐顶部籽晶法从K 2 Mo 3 O 10-B 2 O 3助熔剂中生长出尺寸为20 mm的优质GdAl 3(BO 3)4(简称GAB)和Nd^3+激活的自变频激光晶体。确定了GAB晶体的透光波长范围、折射率和倍频系数随波长的变化,结果表明其在整个透光范围内均可实现相位匹配。测定了Nd^3+∶GAB晶体在室温下的偏振吸收、荧光光谱和荧光寿命,进行了光谱计算,测试了晶体的自变频激光性能,实现了紫外-可见光-红外-中红外多波段激光输出。

关键词： GdAl 3(BO 3)4晶体 Nd^3+离子光谱性能自变频激光性能

钨酸锶及其稀土激活离子掺杂的新型拉曼与自拉曼激光晶体

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人工晶体学报 2019年第10期48卷 1823-1833页

作者：涂朝阳朱昭捷李坚富王燕游振宇中国科学院福建物质结构研究所中国科学院光电材料化学与物理重点实验室

本文以钨酸锶(SrWO 4)晶体为例,介绍了拉曼光学晶体的性质。近年来我们用熔体提拉法成功生长出的一系列纯的和稀土离子掺杂的钨酸锶(SrWO 4)晶体。测试了纯SrWO 4晶体的热性能和折射率,并拟合出晶体折射率的色散方程。测试了Nd∶SrWO 4... 详细信息

本文以钨酸锶(SrWO 4)晶体为例,介绍了拉曼光学晶体的性质。近年来我们用熔体提拉法成功生长出的一系列纯的和稀土离子掺杂的钨酸锶(SrWO 4)晶体。测试了纯SrWO 4晶体的热性能和折射率,并拟合出晶体折射率的色散方程。测试了Nd∶SrWO 4晶体的偏振吸收谱、近红外偏振荧光谱和荧光寿命发射曲线,结果显示,Nd∶SrWO 4晶体具有优异的光谱性能。进行了一系列的激光实验,测试了纯SrWO 4晶体的拉曼激光性能,及Nd∶SrWO 4晶体的自拉曼激光性能。结果表明,SrWO 4晶体是一个性能优越的拉曼晶体。

关键词： SrWO 4晶体提拉法拉曼与自拉曼激光性能

中红外激光晶体Er∶KPb_2Cl_5的原料制备和晶体生长

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人工晶体学报 2006年第6期35卷 1214-1216,1171页

作者：李坚富王燕涂朝阳游振宇朱昭捷夹国华吴柏昌中国科学院福建物质结构研究所福州350002

本文是对中红外激光晶体Er:KPb2C l5的原材料处理合成和晶体生长进行的研究报道。由于KPb2C l5的合成原料容易水解和氧化,我们设计了合适的方案对原料进行了处理,并成功合成出掺杂的稀土氯化物,然后在自制的垂直两温区晶体生长炉内,用B ... 详细信息

本文是对中红外激光晶体Er:KPb2C l5的原材料处理合成和晶体生长进行的研究报道。由于KPb2C l5的合成原料容易水解和氧化,我们设计了合适的方案对原料进行了处理,并成功合成出掺杂的稀土氯化物,然后在自制的垂直两温区晶体生长炉内,用B ridgm an法成功生长出透明的尺寸为22×10×5mm3的Er:KPb2C l5单晶体,并测试了粉末衍射和吸收光谱。

关键词：中红外激光晶体氯铅化钾(KPb2Cl5) 材料合成晶体生长

Study on growth and spectral properties of rare-earth doped sodium gadolinium tungstates crystals

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Study on growth and spectral properties of rare-earth doped ...

Study on growth and spectral properties of rare-earth doped sodium lanthanum tungstates crystals

中国化学会第五届全国结构化学学术会议

作者： Wang Hong-yan You Zhen-yu Zhu Zhao-jie Wang Yan Wu Bai-chang tu chao-yang (Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China)

Pure and rare earth ions(Nd,Tm,Ho,Dy,and Pr)doped NaGd(WO) crystals of good optical quality have been grown successfully by the Czochralski technique *** coefficients of thermal expansion along(100)and(001) directions were *** refractive indices were measured precisely as a function of wavelength and Sellmeir equations of refractive indices were *** Raman spectrum was measured and the vibrational assignment is *** properties of rare-earth doped NaGd(WO) crystals were studied. Large absorption cross-sections and FWHM for the 800nm absorption bands of the Nd:NaGd(WO) and Tm:NaGd(WO) crystals indicated that these crystals were preferable to be pumped by the GaAIAs laser diode(LD).Fluorescence decay curves were measured and results show that Nd:NaGd(WO) crystals have relatively large luminescent quantum *** characteristics of Nd:NaGd(WO) crystal were measured using the Xenon flash-lamp as the pumping source.

关键词： crystal growth spectra properties laser properties

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Study on growth and spectral properties of rare-earth doped ...

Increased excitatory amino acid transporter 2 levels in basolateral amygdala astrocytes mediate chronic stress–induced anxiety-like behavior

中国化学会第五届全国结构化学学术会议

作者： Wei Yan-ping You Zhen-yu Zhu Zhao-jie Wang Yan Wu Bai-chang tu chao-yang (Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China)

Pure and rare-earth ions(Nd、Tm、Dy、Ho、Pr)doped NaLa(WO) crystals of good optical quality were grown successfully by Czochralski technique method,the coefficients of thermal expansion along(100)and(001)directions were measured,and the DTA,TG properties of NaLa(WO) crystal were *** also measured the infrared and Raman spectra of NaLa(WO) crystal,the vibrational characteristics were *** properties of rare-earth doped NaLa(WO) crystals were *** large absorption cross-sections and FWHM for the 800nm absorption bands of the Nd:NaLa(WO) and Tm:NaLa(WO) crystals indicated that these crystals were preferable to be pumped by the GaAIAs laser diode(LD). Laser characteristics of Nd:NaLa(WO) crystal were measured using the Xenon flash-lump as the pumping *** 1.28J pulsed excitation,we obtained 14.77mJ laser output,the maximum overall efficiency is 1.15%.

关键词： crystal growth spectra properties laser properties

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Neural Regeneration Research 2025年第6期20卷 1721-1734页

作者： Xirong Xu Shoumin Xuan Shuai Chen Dan Liu Qian Xiao Jie tu Shenzhen Key Laboratory of Neuroimmunomodulation for Neurological Diseases Shenzhen-Hong Kong Institute of Brain ScienceShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina CAS Key Laboratory of Brain Connectome and Manipulation Brain Cognition and Brain Disease Institute(BCBDI)Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina Guangdong Provincial Key Laboratory of Brain Connectome and Behavior the Brain Cognition and Brain Disease Institute(BCBDI)Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina University of Chinese of Academy of Sciences BeijingChina Faculty of Life and Health Sciences Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina

The conventional perception of astrocytes as mere supportive cells within the brain has recently been called into question by empirical evidence, which has revealed their active involvement in regulating brain function and encoding behaviors associated with ***, astrocytes in the basolateral amygdala have been found to play a role in the modulation of anxiety-like behaviors triggered by chronic stress. Nevertheless, the precise molecular mechanisms by which basolateral amygdala astrocytes regulate chronic stress–induced anxiety-like behaviors remain to be fully elucidated. In this study, we found that in a mouse model of anxiety triggered by unpredictable chronic mild stress, the expression of excitatory amino acid transporter 2 was upregulated in the basolateral amygdala. Interestingly, our findings indicate that the targeted knockdown of excitatory amino acid transporter 2 specifically within the basolateral amygdala astrocytes was able to rescue the anxiety-like behavior in mice subjected to stress. Furthermore, we found that the overexpression of excitatory amino acid transporter 2 in the basolateral amygdala, whether achieved through intracranial administration of excitatory amino acid transporter 2agonists or through injection of excitatory amino acid transporter 2-overexpressing viruses with GfaABC1D promoters, evoked anxiety-like behavior in mice. Our single-nucleus RNA sequencing analysis further confirmed that chronic stress induced an upregulation of excitatory amino acid transporter 2 specifically in astrocytes in the basolateral amygdala. Moreover, through in vivo calcium signal recordings, we found that the frequency of calcium activity in the basolateral amygdala of mice subjected to chronic stress was higher compared with normal *** knocking down the expression of excitatory amino acid transporter 2 in the basolateral amygdala, the frequency of calcium activity was not significantly increased, and anxiety-like behavior was ob

关键词： anxiety astrocytes basolateral amygdala behavior dihydrokainic acid excitatory amino acid transporter 2 fiber photometry glutamate LDN-212320 transporter