检索结果-南通市图书馆

Chinese Science Bulletin 1999年第7期44卷 664-668页

作者： Qinyuan Zhang Lili Hu zhonghong jiang Chinese Acad Sci Shanghai Inst Opt & Fine Mech Shanghai 201800 Peoples R China

A new method to calculate the formation enthalpies and free energies of compounds based on standard electromotive force of cation,φ0, and free energies of formation, ΔG2980, or formation enthalpies, ΔH2980, of chloride was proposed. A linear relationship between φ0 and ΔG2980, φ0 and ΔH2980, and ΔG2980 and ΔH2980 was found respectively. The parameters used for thermodynamic calculation were calculated. The calculated values of the formation enthalpies and the free energies of formation of platinum compounds, such as Pt3（PO4）2 and Pt （PO3）2,were given for the first time. The mechanism of eliminating platinum inclusions in phosphate laser glass by POCI3 gas bubbling was interpreted from thermodynamic aspect.

关键词： thermodynamics phosphate laser glass platinum inclusions.

The effect of OH^(-) groups on the spectroscopic properties of erbium-doped tellurite glasses

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2005年第6期48卷 638-647页

作者： YU Chunlei DAI Shixun ZHOU Gang ZHANG Junjie HU Lili jiang zhonghong Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800China Graduate School of the Chinese Academy of Sciences Beijing 100049China

A series of five different concentration erbium-doped tellurite glasses with various hydroxl groups were prepared. Infrared spectra of glasses were measured. In order to estimate the exact content of OH? groups in samples, various absorption coefficients of the OH? vibration band were analyzed under the different oxygen bubbling times. The absorption spectra of the glasses were measured, and the Judd-Ofelt intensity parameters Ω i of samples with the different erbium ions concentration and OH? contents were calculated on the basis of the Judd-Ofelt theory. The peak stimulated emission cross-section of 4|13/2→4|15/2 transition of the samples was finally calculated by using the McCumber theory. The fluorescence spectra of Er3+:4|13/2→4|15/2 transition and the lifetime of Er3+:4|13/2 level of the samples were measured. The effects of OH? groups on the spectroscopic properties of Er3+ doped samples with the different concentrations were discussed. The results showed that the OH? groups had great influences on the Er3+ lifetime and the fluorescence peak intensity. The OH? group is a main influence factor of fluorescence quenching when the doping concentration of Er2O3 is smaller than 1.0 mol%, but higher after this concentration, the energy transfer of Er3+ ions turns into the main function of the fluorescence quenching. And basically, there is no influence on the other spectroscopic properties (FWHM, absorption spectra, peak stimulated emission cross section, etc.).

关键词： OH^(-)groups tellurite glasses erbium ions spectroscopic properties

Study of a new ytterbium doped phosphate laser glass

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2002年第3期47卷 255-259页

作者： DAI Shixun HU Lili A.Sugiyama Y.Izawa LIU Zhuping jiang zhonghong Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800China Japan Atomic Energy Research Institute Kyoto 619-0215Japan Institute of Laser Engineering Osaka UniversityOsaka 565-0871Japan

Physical, and spectral properties of a new com-mercial ytterbium doped phosphate laser glass with big size, NEW/Yb, was researched. Assessing from thermal mechani-cal property, nonlinear property, crystalline phase, micro defects and spectroscopic properties of NEW/Yb and Kigre’s QX/Yb glasses, it is found that thermal-optical properties and glass internal quality of NEW/Yb glass are superior to QX/Yb glass. For NEW/Yb, the emission cross-section and fluorescent lifetime have a value of 0.53×10 pm2 and 2.2 ms, which are higher than those of QX/Yb.

关键词： ytterbium-doped glass phosphate glasses glass properties spectroscopy.

Large aperture N31 neodymium phosphate laser glass for use in a high power laser facility

在线全文

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2014年第1期2卷 34-39页

作者： Lili Hu Shubin Chen Jingping Tang Biao Wang Tao Meng Wei Chen Lei Wen Junjiang Hu Shunguang Li Yongchun Xu Yasi jiang Junzhou Zhang zhonghong jiang Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences

Large aperture Nd:phosphate laser glass is a key optical element for an inertial confinement fusion(ICF) facility. N31,one type of neodymium doped phosphate glasses, was developed for high peak power laser facility applications in China. The composition and main properties of N31 glass are given, together with those of LHG-8, LG-770, and KGSS-0180 Nd:phosphate laser glasses, from Hoya and Schott, and from Russia. The technologies of pot melting, continuous melting, and edge cladding of large size N31 phosphate laser glass are briefly described. The small signal gain profiles of N31 glass slabs from both pot melting and continuous melting at various values of the pumping energy of the xenon lamp are presented. N31 glass is characterized by a stimulated emission cross section of 3.8 × 10-20cm2 at 1053 nm,an absorption coefficient of 0.10–0.15% cm-1at laser wavelength, small residual stress around the interface between the cladding glass and the laser glass, optical homogeneity of ～2 × 10-6in a 400 mm aperture, and laser damage threshold larger than 42 J/cm2 for a 3 ns pulse width at 1064 nm wavelength.

关键词： neodymium phosphate laser glass large aperture glass ICF facility

在线全文

学校读者我要写书评

暂无评论

磷酸盐玻璃熔炼时对铂的腐蚀

无机材料学报 1997年第3期12卷 265-272页

作者：余尧楚姜中宏中国科学院上海光学精密机械研究所上海201800

通过对磷酸盐的生成热和标准熵比较准确的估算，并应用热力学第一近似方程，对磷酸盐玻璃的熔炼过程进行了剖析，发现体系中存在的氧和水是铂坩埚受侵蚀的主要原因，而腐蚀产物Pt（PO3）2和Pt（PO3）4能容易地和游离氧化物发生反应，释... 详细信息

通过对磷酸盐的生成热和标准熵比较准确的估算，并应用热力学第一近似方程，对磷酸盐玻璃的熔炼过程进行了剖析，发现体系中存在的氧和水是铂坩埚受侵蚀的主要原因，而腐蚀产物Pt（PO3）2和Pt（PO3）4能容易地和游离氧化物发生反应，释出铂粒子。通入POCl3气氛，既可除水，除去游离氧化物，又能达到隔绝空气的目的，从而可导致铂粒子大大地减少．

关键词：生成热标准熵磷酸盐玻璃铂腐蚀熔制玻璃

在线全文

学校读者我要写书评

暂无评论

凝胶基质高效可调谐固态染料激光器

光学学报 1999年第6期19卷 766-770页

作者：张勤远姜中宏胡丽丽中国科学院上海光学精密机械研究所

采用溶胶－凝胶（ｓｏｌ－ｇｅｌ）工艺制成激光染料掺杂有机改性凝胶玻璃（Ｏｒｍｏｓｉｌ）。用室温下调ＱＮｄＹＡＧ激光器倍频光（５３２ｎｍ）泵浦凝胶基，成功地获得了高转换效率、长寿命、可调谐固态染料激光器的激光输出。其中... 详细信息

采用溶胶－凝胶（ｓｏｌ－ｇｅｌ）工艺制成激光染料掺杂有机改性凝胶玻璃（Ｏｒｍｏｓｉｌ）。用室温下调ＱＮｄＹＡＧ激光器倍频光（５３２ｎｍ）泵浦凝胶基，成功地获得了高转换效率、长寿命、可调谐固态染料激光器的激光输出。其中ＳｉＯ２－Ｏｒｍｏｓｉｌ基质Ｐｙｒｏｍｅｔｈｅｎｅ５９７染料激光器，激光输出阈值低于１０μＪ，斜率效率η＝６１％，５５０～５９４ｎｍ波长范围内连续可调谐，激光输出能量下降１０％所承受的激光脉冲数大于２．５×１０４个（激光泵浦频率１Ｈｚ，能量密度１ｍＪ／ｃｍ２）。

关键词：溶胶-凝胶激光染料固态激光器可调谐

在线全文

学校读者我要写书评

暂无评论

磷酸盐激光玻璃研究进展

硅酸盐通报 2005年第5期24卷 125-129,135页

作者：胡丽丽姜中宏中国科学院上海光学精密机械研究所上海201800

由于国内外大型激光贯性约束聚变装置的兴建和光通信的迅速发展,磷酸盐激光玻璃。尤其是激光钕玻璃得到了前所未有的发展。本文介绍了目前国内外磷酸盐激光玻璃,主要是掺钕、掺铒、掺镱磷酸盐激光玻璃的最新研究进展。

关键词：激光玻璃磷酸盐玻璃稀土离子磷酸盐激光玻璃聚变装置国内外光通信钕玻璃兴建

在线全文

学校读者我要写书评

暂无评论

氟锆酸盐玻璃析晶动力学研究

无机材料学报 1995年第1期10卷 17-22页

作者：杨秋红姜中宏中国科学院上海光学精密机械研究所

本文用差示热分析ＤＴＡ研究了ＮａＦ和ＮａＣｌ的引入对氟锆酸盐玻璃析晶动力学参数的影响，指出ＮａＦ和ＮａＣｌ的引入使氟锆酸盐玻璃析晶活化能下降，Ｔｘ—Ｔｇ增加，改善了玻璃形成能力．用Ａｕｇｉｓ－Ｂｅｎｎｅｔｔ法及修正Ｋ... 详细信息

本文用差示热分析ＤＴＡ研究了ＮａＦ和ＮａＣｌ的引入对氟锆酸盐玻璃析晶动力学参数的影响，指出ＮａＦ和ＮａＣｌ的引入使氟锆酸盐玻璃析晶活化能下降，Ｔｘ—Ｔｇ增加，改善了玻璃形成能力．用Ａｕｇｉｓ－Ｂｅｎｎｅｔｔ法及修正Ｋｉｓｓｉｎｇｅｒ法处理实验结果，所得析晶活化能基本一致，而由Ａｕｇｉｓ－Ｂｅｎｎｅｔｔ法得到的频率因子较由修正Ｋｉｓｓｉｎｇｅｒ法得到的频率因子小一个数量级．同时用一种新的析晶动力学判据Ｋｙ（Ｔ）＝ｖｅｘｐ（－Ｅ／ＲＴ×△Ｔ／Ｔｍ（△Ｔ＝Ｔｘ—Ｔｇ）来判断氟锆酸盐玻璃形成能力，并与别的判据进行了分析比较．析晶活化能与玻璃的热稳定性有关．

关键词：玻璃析晶动力学氟锆酸玻璃

重金属氧化物对Er^(3+)掺杂锗碲酸盐玻璃荧光性能的影响

在线全文

学校读者我要写书评

暂无评论

硅酸盐学报 2005年第6期33卷 732-735页

作者：杨中民张勤远姜中宏华南理工大学光通信材料研究所

在980nm激光二极管的抽运下,对稀土Er3+掺杂锗碲玻璃的荧光性能进行了研究。结果表明:当Bi2O3取代PbO后,玻璃的最大吸收截面和最大发射截面保持不变,而1.53μm荧光带宽略微增大。玻璃的Raman散射光谱显示:这种玻璃的网络局域结构发生了... 详细信息

在980nm激光二极管的抽运下,对稀土Er3+掺杂锗碲玻璃的荧光性能进行了研究。结果表明:当Bi2O3取代PbO后,玻璃的最大吸收截面和最大发射截面保持不变,而1.53μm荧光带宽略微增大。玻璃的Raman散射光谱显示:这种玻璃的网络局域结构发生了变化。Er3+周围局域晶体场的不均匀分布引起了荧光带宽和发射截面带宽的略微增大。

关键词：荧光玻璃铒离子

在线全文

学校读者我要写书评

暂无评论

用铅同位素特征研究中国古代铅(钡)玻璃

硅酸盐学报 1998年第1期26卷 109-113页

作者：姜中宏张勤远中国科学院上海光学精密机械研究所

研究了我国出土的一些早期古代铅（钡）玻璃，尤其是先秦时期铅（钡）玻璃的铅同位素比值特征，总结了我国铅矿床铅同位素组成特征，并将两者进行对比研究，从原料来源的角度判定了我国出土的先秦铅（钡）玻璃等是中国本土制造的．

关键词：玻璃铅同位素钡铅矿床比值特征铅玻璃