查询词典 a beam of light

The nonlinear Goos-Hanchen shift of a reflection light beam and the refraction angle of a transmission light beam can all be changed by adjusting the power of the incident light beam.

同时发现反射光束的非线性古斯-汉辰平移量及透射光束的折射角都可以通过适当改变入射光束的功率来调整。

In strictly, it is hard to make the light normal incident into the sphere, double refraction will take place in crystal sphere when a TEM〓 mode Gaussian beam oblique incident into the sphere, and the two orthogonal polarized beams are both elliptical Gaussian beam. The ellipticity and eccentricity of the elliptical Gaussian beam will change with the incident angle, and for a fixed incident angle, they will change with the shifting of incident beam waist position.

由于严格意义上的正入射较难实现，基模圆高斯光束斜入射晶体球后将在球内产生双折射，且球内偏振态正交的两束折射光都将是椭圆高斯光束，它们的椭圆度e和偏心度Δ随入射角的改变而改变，在入射角一定的情况下，入射光束束腰的移动也将改变这两束折射光的椭圆度e和偏心度Δ。

We investigate the lateral shift of a TM-polarized light beam reflected from Otto configuration under grazing incidence.

本文系统研究了TM偏振态光束在Otto结构中掠入射情形下反射光束的Goos-H？nchen位移。

They include: 1. A supersonic beam of NO molecule mixed with Ar atom is ionized by VUV synchrotron radiation from Hefei Light Source at National Synchrotron Radiation Laboratory.

它们包括： 1。首次利用国家同步辐射实验室合肥光源的真空紫外同步辐射，使NO分子和Ar原子混合物的超声分子束发生光电离，测量了Ar，NO和异类团簇Ar·NO的光电离效率谱。

The method utilizes an optical device which consists of polarization control elements and polarization beam splitting pieces for realizing the multi-switching of polarization or non-polarization light; in a position sequence, one polarization beam splitting piece is arranged on a main optical path at the back surface of each polarization control element, thereby commonly constituting a 'single-pole double-throw' optical switch with a controller; the controller changes the polarization state of input light beams by driving the polarization control elements according to the control logic, and the input light beams are switched to any one path on an output channel through the polarization beam splitting pieces, thereby completing the designated optical information processing function.

利用偏振控制元件和偏振分束片两种光学元件组成的光学装置实现偏振或非偏振光的多路切换；在位置序列上，每个偏振控制元件后面主光路上放置一块偏振分束片，并和控制器共同构成一个'单刀双掷'光开关；控制器按照控制逻辑驱动偏振控制元件改变输入光束的偏振态，并通过偏振分束片将输入光束切换到输出通道上的任何一路，来完成指定的光信息处理功能。

In order to obtain symmetry and parallel polarized light, the double Wollaston prism is amended. After getting symmetric polarized light at a big splitting beam angle, an ordinary triangular prism is added so that the symmetric light beam can be divided into parallel light beams. The distance between the triangular prism and the double Wllaston prism is changed so that the distance of the shearing parallel light can be changed.

为了获得对称且平行分束的偏振光，对双wollaston棱镜进行了修正，在获得大分束角的对称偏振光后，配合普通玻璃三棱镜，使对称分束光变成平行分束光，通过改变三棱镜与双wollaston棱镜间的距离来改变平行光的剪切距离。

A device which transmits an extremely narrow and coherent beam of electromagnetic energy in the visible light spectrum.

一种能够发射可见光谱电磁能的极细的相干光束的装置。

Mobile positioning system or dynamic table so that the laser head is cutting material in the system-driven subcapital high speed, laser head from the light source and cutting heads, light source produces a very short wavelength focused laser beam, laser beam through cutting heads, vertically focused the material being cut on the surface, heating and melting, evaporation is cutting material, resulting in the closure of Lancing, slotted openings formation pads.

移动定位系统妪动工作台或激光头，使得被切割材料在系统驱动头下高速运动，激光头由光源部分和切割头组成，光源部分产生波长很短的聚焦激光束，激光束通过切割头，垂直聚焦在被切割的材料表面上，加热、融化、蒸发被切割材料，形成切缝，闭合的切缝形成焊盘开孔。

Through the design and practice of light-type steel structure, the author introduces the design elements of the workshop's pile, beam, roofing purline , node and rigid frame's zoccola with the structure, in order to make the structure more economic and rational, which to offer a reference for engineering and technicians.

通过轻型钢结构的设计与实践，介绍了其结构厂房柱、梁、屋面檩条、节点及刚架柱脚的设计要点，从而使结构变得更经济合理，对工程技术人员具有一定的参考价值。

When the four minstrels were finished, they put out the light and looked for a place to sleep, each according to his nature and his desire. The donkey lay down on the manure pile, the dog behind the door, the cat on the hearth next to the warm ashes, and the rooster sat on the beam of the roof.

他们吃饱之后，把灯灭了，各自依自己的习惯找到了休息的地方，驴子躺在院子里的一堆草上，狗趴在门后面，猫蜷曲在仍有炉灰余热的壁炉前，公鸡栖息在房顶的屋樑上。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。