本文简单介绍了光场角动量的基本定义与概念，各类圆对称光束的角动量。
An introduction is given to the basic definition and conception of the angular momentums of the light field, and the angular momentums of a variety of cylindrical symmetric beams.
研究了稳态情况下一维宽光束在有偏压双光子中心对称光折变晶体中的调制不稳定性。
The modulational instability of one-dimensional broad optical beams in biased two-photon centrosymmetric photorefractive crystals under steady-state conditions has been investigated.
预言了亮-亮，暗-暗和亮-暗非相干耦合空间孤子对可存在于中心对称光折变介质中。
Incoherently coupled dark-dark , bright-bright and bright-dark screening soliton pairs in centrosymmetric photorefractive crystals are possible due photorefractive effect.
使光学速调管第二段波动器的磁场参数与光场的高次谐波共振，与对称光学速调管情况相比，可使产生的相干谐波辐射强度提高。
Making the second section undulator of optical klystron resonant with the higher harmonic of the laser, the harmonic emission can be enhanced.
分析研究了相干光与具有空间反演对称非线性介质作用的压缩性质。
An analytical approach is adopted for the calculation of squeezed property of coherent light interacting with a nonlinear medium of inversion symmetry.
计算结果指出，当轴棱锥的截面为圆对称的理想加工时，轴棱锥产生的光场分布为近似理想的零阶贝塞耳光。
Results show that if the cross-section of the axicon is ideally manufactured in circular symmetry, the field distribution behind the axicon is approximately an ideal Bessel beam.
数值模拟表明，无论是注入光的对称耦合驱动控制还是非对称耦合驱动控制，该方法都能有效地使混沌系统同步。
Numerical simulations show that by this method chaotic synchronization can be achieved effectively no matter whether or not the coupling driving control of the injection lights is symmetrical.
通过光弹实验表明了端齿连接转子受力的分区循环对称性。
The partially cyclic symmetry of the displacement and stress field in a typical rotor with curvic couplings is shown by carrying out a photoelastic experiment for the rotor.
对结果的分析讨论表明，非对称微带电极用于极性反转电极结构对在高频波段实现低驱动功率光调制是十分有效的。
For high-speed and low-drive -power light, modulation, the advantages of the use of asymmetric strip line was shown.
第二部分是在非对称的双量子点中电压调控的慢光效应。
The second part involves voltage controlled slow light effects in asymmetry double quantum dots (QDs).
综述了不对称方酸菁的合成、 中间体的制备、光谱、光导性能以及应用研究。
Recent advance in research on unsymmetric squarine is reviewed, including their synthetic methods, properties and applications.
采用选择区域生长、量子阱混杂和非对称双波导技术制作了电吸收调制器与半导体光放大器和双波导模斑转换器的单片集成器件。
On the basis of the study of the single circular groove guide and symmetric double circular groove guide, a new structure, asymmetric double circular groove guide, has been put forward.
研究了级联三能级系统中孪生色锁随机光场的相位共轭阿秒和频极化拍频(ASPB)不对称新效应。
The new effects of phase-conjugation asymmetric attosecond sum-frequency polarization beat (ASPB) of twin composite color-locking stochastic fields in cascade three-level system are investigated.
这种方法能够计算非轴对称甚至接近真实形状粒子的光散射。
This method enables us to calculate light scattering by non-axisymmetric and even more realistically shaped particles.
数值计算例表明，用快速汉克尔变换来模拟柱对称大型高功率激光放大系统中的光传输时，是一种非常有用的、快速的算法。
Numerical examples show that FHT is a useful fast algorithm to simulate the beam propagation through a large high power laser amplifier system with cylindrical symmetry.
通过对光强不对称的改进，该方法有光路简单，无能量损失的优势。
Comparing with other improvement, this method is superior in simple optical path and no additional energy loss.
该光瞳滤波器由两个平行偏光镜，一个电光晶体与一个径向对称双折射晶体组成。
It consists of two parallel polarizers, an electro-optical crystal and a birefringent crystal with radial symmetry.
针对近红外五甲川菁染料光稳定性差的问题，设计合成系列水溶性方酸菁染料，其中两个不对称染料结构未见报道。
Focus on the poor photostability of pentamethine cyanine dyes, a series of water-soluble squarylium cyanine dyes were synthesized, including two novel asymmetric dyes.
提出了制作透镜电极时保持轴对称、特别是限制光栏必须位于透镜光轴上的必要性。
The necessity of the lens electrode coaxality especially the coaxality of the aperture with lens axis is emphasized.
四极子量子级联微腔激光器带来的光的方向性激射，解决了对称型微腔激光器光的方向性激射的困难。
Directional emission of light guided by quadrupolar-shaped quantum cascade microcavity lasers solves the difficulty about the directional emission of symmetrical microcavity lasers.
球对称梯度折射率微球透镜具有体积小、光路短、外形易加工、使用易调整，且无螺旋光线、像差小等优越性能。
The spherical gradient refractive index micro-lens with small volume and short optical path can be easily shaped and conveniently adjusted, and has no spiral rays and low spherical aberration.
文摘：综述了光活性化合物动力学拆分法的研究进展及其在不对称合成中的应用。
Abstract: the recent progress is kinetic resolution and its applications in asymmetric synthesis are reviewed.
结果表明，三阶色散会引起光脉冲形状发生畸变，会在其前沿或后沿附近形成非对称的振荡结构。
The results show that the third-order dispersion generates distortion to the optical pulse shape with an unsymmetrical structure at the front or back edge.
通过烯丙基溴化锌对手性亚胺的两次不对称加成，合成了光活性的双烯丙基化的新型手性二胺。
A novel chiral diallylic diamine has been synthesized through double addition of allyl zinc bromide to chiral imines in this contribution.
本文主要研究了对称三层平面光波导中光的传播问题。
In this paper, we mainly deal with the wave propagation in the symmetric three layers slab optical waveguide.
关于手性配体催化二烷基锌一羰基的不对称加成生成光活性醇的反应，从催化剂、不对称催化机理与自催化过程、手性放大等方面进行了概述，参考文献50篇。
The title reaction is reviewed with 50 references, the catalysts, the mechanism of asymmetric catalysis, the self-catalyzed process and the chiral amplification phenomenon are discussed.
提出一种基于非对称双相机结构光的三维扫描系统方案。
An asymmetry Dual-Camera structured light based 3-d digitization system is introduced.
提出了在三值光计算机中采用对称三进制半加器的观点，设计了支持这个观点的半加器结构原理图。
This paper brings forward a new viewpoint of using balanced ternary half-adder in the ternary optical computer.
确定了当入射光场为椭圆高斯分布时，获得圆对称聚焦光斑的条件。
Conditions by which a circular symmetrical focussed spot can be obtained when the incident laser beam is an elliptical Gaussian profile are determined.
确定了当入射光场为椭圆高斯分布时，获得圆对称聚焦光斑的条件。
Conditions by which a circular symmetrical focussed spot can be obtained when the incident laser beam is an elliptical Gaussian profile are determined.
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