电光学

Optical electronegativity of binary oxide glasses based on the energy gap and refractive index Optical electronegativity is one of the most important parameters in understanding the nature of chemical bonding, and several important physical parameters can be predicted by using it.

光学电二元氧化物玻璃基于关于能源的差距和折射率光学电是其中最重要的参数在了解的性质，化学粘接，和几个重要的物理参数可以预测使用它。

Electrooptics Manual［M］.

电光学手册［M］。

Ferroelectric thin films possess a set of unique properties, such as electronic, optical, electro-optic, pyroelectricity, piezoelectricity, for many applications in electronic and optical devices.

由于铁电薄膜具有独特的电学、光学、热学、声学等性能，在光电子学、集成光学、微电子学等高新技术领域中有着广泛的应用前景，八十年代以来铁电薄膜的制备、表征和应用已经成为了世界范围新材料研究中的热点。

This project was established based on the first cooperative development of optical in situ real time detecting technique probing the atomic scale layer-by-layer epitaxy growth of oxide film. Over the last three years, we have given full play to the advantages and characteristics of both sides and have finished the assumptions and plans of this subject satisfactorily. 1. In Institute of Physics, we set up advanced oblique-incidence reflectivity difference equipment and wrote one data acquisition procedure that made the simultaneous detection of optical signal and RHEED signal into reality. 2. The first observation of sustained oscillations over hundreds of monolayers in both real and imaginary signals during the epitaxy growth of SrNb0.1Ti0.9O3 on SrTiO3 substrate in LMBE testifies that oblique-incidence is an excellent method to detect and monitor film epitaxy growth real time. 3. For the first time, we verify that oblique-incidence reflectivity difference method can be used to monitor the layer-by-layer growth mode during continuous growth through the correspondence between optical signals to atomic or molecular step edge density on the growth surface. 4. Phenomenological analysis shows that optical signals comprise three parts, the first is proportional to the average thickness of the film and depends on the bulk phase dielectric response; the second is proportional to the coverage of terraces and depends on the dielectric response of atoms or unit cells in the terrace; the third is proportional to the coverage of step edges and depends on the effective dielectric response of atoms or unit cells at step edges. This makes oblique-incident reflectivity difference technique a quantitative macroscopic method to monitor film growth.

中文摘要：本课题是在合作首次发展了氧化物薄膜原子尺度层状外延生长光学原位实时探测方法的基础上立项的，三年来，我们充分发挥双方的优势和特点，圆满完成了课题的设想和计划。1、在物理所建立了一套先进的光反射差法装置，编写了计算机系统的数据采集程序，实现了两路光学信号和RHEED数据的同步采集和显示。2、用激光分子束外延在SrTiO3基底上生长SrNb0.1Ti0.9O3薄膜，首次观测到连续外延几百个原胞层，周期振荡的光反射差实部和虚部信号，证明了光反射差法是一种能原位实时探测与监控薄膜层状外延生长的好方法。3、首次验证了通过对生长表面原子或分子台阶密度的响应，光反射差法可用于原位实时监测在连续生长条件下薄膜的层式生长模式。4、通过唯象理论的研究，证明光反射差信号由三项组成，第一项只与薄膜的平均厚度和宏观光学电介质常数有关；第二项与分子台阶面覆盖度和台阶面上分子层的光学电介质常数有关；第三项与台阶边缘的覆盖度成正比，并和在台阶边缘的分子的有效光学介电常数有关。

In the present study, tungsten oxide nanomaterials were synthesized by a modified plasma arc gas condensation technique. The effects of the plasma currents (70~90 A), chamber pressures (200~600 torr), production time（3~12 min）, oxygen partial pressure Ar:O2（1~6:1）and plasma including the hydrogen（0~10 %）on the preparation of tungsten oxide nanostructures were investigated. Pre-treatment on the tungsten oxide nanorods for surface modification was investigated by atmospherical plasma jet. The optical, filed emission, and gas sensing characteristics of tungsten oxide nanopowders were also examined.

本研究系利用电浆电弧气凝合成法来制备氧化钨奈米材料，分别探讨不同腔体压力（200~600 torr）、电浆电流（70~90 A）、制备时间（3~12 min）、氧分压Ar：O2（1~6：1）、电浆气含氢量（0~10 %）对於产物的形貌、相态影响，并使用常压低温电浆设备对氧化钨奈米棒进行表面处理，且针对氧化钨奈米材料的光学、场发射以及使用自行组装气体感测量测设备量测其气体感测特性。

The invention relates to electrooptical light modulating elements, to electrooptical displays containing elements of this type, and to display systems, e.g. television screens and computer monitors, and to the modulating media used therein.

本发明涉及电光学光调制元件，涉及包含此类型元件的电光学显示器和显示系统，例如电视屏和计算机显示器，和涉及其中使用的调制介质。

A new electrostriction material strain measure method using optical lever has been proposed.Short arm senses micro strain at contact point,with the help of optical lever micro strain has been magnified to form a facula.The CCD camera samples the positions of facula and the micro displacement of contact point can be obtained.

提出利用光学杠杆测量电致伸缩材料性能的新方法，通过触点短臂传感微形变，并通过光学杠杆将微形变放大后形成光斑，利用CCD摄像头采集放大前后的光斑，通过对光斑图像进一步的处理可以得到微位移量，从而实现电致伸缩材料应变测量。

The ferroelectrics with photoelectronic, acoustooptic, and nonlinear optical effects are good candidate for constructing optical switches, power splitters, couplers, filters, frequency doublers, and integrated photonic devices. Especially, the newly developed fabrication technology for ferroelectric-based photonic crystals renders a perspective application of ferroelectric materials in photonic band-gap engineering.

具有热释电效应的铁电物质是制作新一代非致冷红外探测器的理想材料；利用铁电体的电光、声光和非线性光学效应，可构建光开关、功分器、耦合器、滤波器、倍频器等无源光学元器件或集成光子器件；特别是近年来发展的铁电光子晶体制备技术对推动和拓展铁电氧化物在光子带隙工程领域的应用带来了新的希望。

The ferroelectric, dielectric, and optical properties of these thin films were studied. Moreover, a four-phase model was successfully employed in analyzing the optical parameters.

研究了部分组分薄膜的铁电、介电和光学性质，提出了四相模型拟合薄膜结构，并成功地用此模型分析了薄膜的光学参数。

Its basic principle, classification, applications, and new developments are introduced and described in detail. 2 A new optimum method named simulated annealing algorithm is introduced and applied in the analysis of the ellipsometric spectra. 3 Some new ferroelectric materials have been studied by the method mentioned above, and some new results achieved as follows. First, Ca-modified lead titanate ferroelectric thin films have been prepared by solgel processing. The optical constants spectra of the 〓(x=0.0-0.4, 0.24) films have been obtained, the structure properties of the thin films have been studied by XRD and AFM.

回顾了椭偏光谱近一个世纪的产生发展的历程，系统介绍了椭偏光谱的基本原理、物理模型，以及广泛应用与发展状况。2）介绍模拟退火算法这一新型的优化方法，并将其结合Forouhi-Bloomer模型和Sellmeier模型应用到椭偏光谱分析中。3）用上述方法分析几种新型铁电材料的光学性质，并获得以下结果：首先，第一次获得钛酸铅钙系列、钙原子含量分别为0％、10％、20％、24％、30％、40％的铁电薄膜的光学常数谱，并结合XRD和SEM分析其结构，发现随钙含量的增加，薄膜晶相发生变化。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。