SiO2-Al2O3-PbF2-ZnF2-ErF3玻璃陶瓷的显微结构

氟氧化物玻璃陶瓷综合了传统激光晶体和激光玻璃的优点，是近年来激光材料研究的新热点。我们制备了掺杂Er离子的SiO2-Al2O3-PbF2-ZnF2玻璃陶瓷材料，并对其显微结构进行了初步研究。     

氟氧化物玻璃陶瓷中上转换发光强度与泵浦激光功率的非平方关系

用960nm半导体激光器作泵浦源,研究了Er^3 和Yb^3 共掺杂的氟氧化物玻璃陶瓷中Er^3 的上转换发光的性质。绿光上转换发光是双光子过程,但绿色上转换发光强度与泵浦激光功率是非平方关系,随着泵浦激光功率的增加,上转换发光强度逐渐趋于饱和。用Er^3 -Yb^3 系统的动力学平衡方程解释了这种现象,在氟氧化物玻璃陶瓷中稀土离子的上转换发光主要是受Er^3 和Yb^3 之间较强的背向能量传输过程影响的。     

Ho3+在氟氧化物玻璃陶瓷中的光谱性质

根据 Ｈｏ掺杂的氟氧化物玻璃陶瓷的吸收光谱，用 Ｊｕｄｄ－Ｏｆｅｌｔ理论计算了强度参量，并由此计算了激发能级的自发辐射跃迁速率、辐射寿命、荧光分支比和积分发射截面等光谱参量．     

低温共烧陶瓷基板材料学上的进展

本文介绍了玻璃-陶瓷和玻璃 陶瓷两种低温共烧陶瓷（LTOC）基板主要途径上的进展，着重提到氧化物混合物 陶瓷该方法的优点，同时介绍了对LTOC金属化材料的要求、组成和选用，简述了工艺因素和烧结时的界面反应对LTCC电容器、电阻器性能的影响。     

平板式固体氧化物燃料电池的封接

甲板式固体氧化物燃料电池（SOFC）是目前发展的主要趋势，其中的封接技术很关键。本文综述了云母复合压缩封接和玻璃／玻璃陶瓷封接在平板式SOFC中应用的技术进展，比较了各种封接方式的优缺点，并指出了其在不同国家、地区的研究现状和发展趋势。     

Er^3＋在氟氧化物玻璃陶瓷中的荧光衰减特性

氟氧化物玻璃陶瓷是具有氧化物的机械性能和氟化物的低声子能量的新型上转换发光材料。本文首次研究了Er^2 -Yb^3 共掺杂时Er^3 的荧光衰减特性。研究结果表明,由于室温下声子的参与使不同稀土离子之间更容易实现能级匹配,增强了交叉弛豫过程,并使664nm辐射在室温下有较长的寿命,这一结果有利用4F9/2 能级做中间能级实现转换发光。     

中波红外玻璃的研究

中波红外玻璃综合了优良的透红外性能、大尺寸制备特性和低成本等特点,是很多重要军用系统的关键窗口材料之—.中波红外玻璃材料主要包括氟化物玻璃、铝酸钙玻璃、锗酸盐玻璃、镓酸盐玻璃、碲酸盐玻璃和重金属氟氧化物玻璃等.中波红外玻璃材料目前的基本性能表明了其存在的问题.指出了当前中波红外玻璃的国内外研究现状及其发展趋势.     

氟氧化物中Tm3+的光跃迁

由氟化物微晶镶嵌于氧化物玻璃基质中构成的氟氧化物玻璃陶瓷（ＦＯＶ）,由于兼具氟化物的好的光学性能和氧化物的机械、化学稳定性和易于制作等特点而受到关注． 本文测量了 Ｔｍ３＋（０．５ ｍｏｌ％） 掺杂的氟氧化物玻璃陶瓷和玻璃（ＦＯＧ）吸收谱,发现由于局部晶场的增强,各峰的半高宽略变小,而致３Ｆ４、、３Ｆ３能态的峰值吸收增大． 根据振子强度与积分吸收系数的关系,求得各吸收跃迁的振子强度的实验值．可以看出,Ｔｍ３＋在氟氧化物玻璃陶瓷中的吸收较强,这将有利于产生高的泵浦效率,而在较宽的波段范围内均有较强的吸…     

Er^3＋,Yb^3＋掺杂氟氧化物微晶玻璃上转换发光的研究

测量了Er^3 掺杂氟氧化物微晶玻璃、Er^3 ,Yb^3 掺杂氟氧化物微晶玻璃退火前后3种样品的吸收光谱、激发光谱、上转换发光光谱及其强度随泵浦光强的变化,对比讨论了其上转换发光特性。     

Er~(3+)在氟氧化物玻璃陶瓷中的荧光衰减特性

氟氧化物玻璃陶瓷是具有氧化物的机械性能和氟化物的低声子能量的新型上转换发光材料。本文首次研究了 Er3+ - Yb3+ 共掺杂时 Er3+ 的荧光衰减特性。研究结果表明 ,由于室温下声子的参与使不同稀土离子之间更容易实现能级匹配 ,增强了交叉弛豫过程 ,并使 6 6 4nm辐射在室温下有较长的寿命 ,这一结果有利于用 4F9/2 能级做中间能级实现上转换发光     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.