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The invention is characterized in that it dops ytterbium and zinc in lead tungstate crystal, which greatly improves its optical properties on the basis of retaining original good properties of lead tungstate crystal.

本发明在钨酸铅晶体中掺杂元素镱和锌，在保留钨酸铅晶体原有优良性能的基础上，大幅度改善其光学性能。

Based on the theory of stimulated polariton scattering, adopting reported experimental conditions that generate tuning terahertz wave utilizing nonlinear optical parametric oscillation as the theoretical analysis model, taking GaAs, GaP, InP, ZnTe crystal as representative, the absorption and gain characteristics in zinc blende crystal are calculated, and the output tuning characteristics of terahertz wave are also analyzed.

基于受激电磁耦子散射原理，采用已报道的利用非线性光学参量振荡方法产生可调谐太赫兹波的实验条件作为理论分析的实验模型，以GaAs、GaP、 InP、ZnTe晶体为代表，计算分析了在闪锌矿晶体中参量振荡产生太赫兹波的吸收、增益特性，对输出THz波的调谐特性给出了详尽分析。

Simply inferred the optical-rectification effect in the silicon, discovered the optical electric voltage aeolotropic rule through the experiment of observing the relation between the optical electric voltage and the light wave direction of polarization and the orientation of crystal changing when the Si/Al schottky barrier has been illuminated, and confirm the reason is that the existence of self-field destroy the crystal symmetry, produce second-order nonlinear optical-rectification effect, and the direct-current field which has been produced by the optical-rectification effect and the self-field affect mutually.

推导了硅中的光整流效应，并通过观测Si/Al肖特基势垒受光照时产生的光生电压与光波偏振方向和晶向的变化关系的实验，发现了光生电压的各向异性规律，并确定这是由于内建电场的存在使晶体对称性被破坏，产生二阶非线性效应的光整流，光整流产生的直流电场又与内建电场相互作用的结果。

The copper atom is in a planar coordination site of [N_2O_2] and it devites from the mean plane by only 0.80 pm. Byπ-πstacking interactions, a alabastrine structure was obtained.(2)Schiff-base complex [Cu(H_2O)]·H_2O, where H3GS is the 3-carboxyl -salicylidene glycine, was synthesized and characterized by elemental analysis, IR spectra and single-crystal analysis. The crystal belongs to monoclinic system, space group P2(1)/c, a=848.46(3)pm, b=681.54(3)pm, c=1967.16(8)pm,β=95.8210(10)°, Z=4, R_1=0.0279, wR_2=0.0724. The copper atom is in a square-pyramidal field with the base

结果表明该晶系属单斜晶系，空间群P2(1)/c，晶胞参数：a=848.46(3)pm，b=681.54(3)pm，c=1967.16(8)pm，α=90°，β=95.8210(10)°，γ=90°，Z=4，R_1=0.0279，wR_2=0.0724，Cu原子位于轻微变形的四方锥场底心，底面被氮原子、酚氧原子、甘氨酸羧基的一个氧原子和一个水分子氧原子占据，而甘氨酸羧基的另一个氧原子占据相邻分子的锥顶，因而形成一维链状结构；合成了单核双聚配合物Na_2[Cu_2_2]·2H_2O ，铜三核配合物Cu_3_2·5H_2O和铜锌异三核配合物ZnCu_2_2·5H_2O，并用元素分析，IR光谱，电子光谱和磁化率测定对配合物的组

The crystal structures have been determined by single-crystal X-ray diffraction.Cadmium atoms in compounds 1 and 2 show an eight-coordinated distorted square-antiprismatic geometry and a seven-coordinated distorted pentagonal bipyramidal geometryrespectively. Copper atoms in compounds 3 and 4 show a six-coordinated distorted threeprismatic geometry and a four-coordinated distorted tetrahedral geometry respectively.

所有配合物的晶体结构都通过单晶X-射线衍射确定：配合物1中的镉离子周围显示八配位的扭曲四方反棱柱构型；而配合物2中的镉离子周围显示七配位的扭曲五角双锥构型；配合物3中的铜离子周围显示六配位的扭曲三棱柱构型；配合物4中的铜离子周围显示四配位的扭曲四面体构型；配合物5中的锌离子周围显示六配位的扭曲八面体构型。

The conoscopic interference pattern of wafer with optical axis parallel to the surface of a crystal is sensitive to the crystal birefractive index.

光轴平行表面的晶片的会聚偏光干涉对晶体的双折射率非常敏感。

The structure of ITO films prepared on flexible substrate for different concentration of SnO2 is polycrystalline bixbyite, the crystal lattice parameter of films increases and distortion of crystal lattice is more obvious with the increasing of SnO2 concentration.

用不同掺杂比例的靶材制备的薄膜均为多晶纤锌矿结构，掺杂比例增大，样品的晶格常数变大，晶格畸变明显。

The results can be expressed as follows:(1) With the increase of water phase content, the amine salt aggregated orderly in different forms such as W/O micro-emulsion, nodus-knot catenulate aggregates, layer liquid crystal and O/W micro-emulsion.(2) In layer liquid crystal, SO〓 mainly combined with amine salt cation by two oxygen atoms in bridge.(3) In UV-VIS spectrum of layer L. C., there is an absorption about 500 nm and "light short circuit"appeared about 430 nm. These phenomena may be very important for measuring the distance between the layers of the L.

研究发现该体系随水相含量的增加，胺盐发生不同形式的有序缔合，分别形成了W/O型微乳液、&节-结&型链状缔合体、层状液晶和O/W型微乳液：在层状液晶中，SO〓主要以桥式双齿配位形式存在，中性胺分子有利于体系中液晶的形成；层状液晶于500nm波长处有一吸收峰，在430nm附近发生&光短路&现象，该现象可能对测定层状液晶的层间距有重要意义。

The possibility of liquid crystal used in optical isolator is discussed based on the selective reflection of cholesteric liquid crystal .

利用手性液晶的Bragg选择反射特性，理论分析了液晶在光隔离技术中的应用可能性。

Both cholesteric liquid crystal polymer cholesteric liquid crystal optical properties and the unique characteristics of the polymer which has a wide range of applications.

胆甾液晶高分子兼具胆甾相液晶的独特光学性质及高分子的特点从而具有广泛的应用前景。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。