光束

TEC part affected Gaussian beam waist radius,Coreless part worked on the space between beam waist and thin lens,and GRIN part acted as thin lens,in which focal length was determined by fiber index distribution parameter g.

推导了出射高斯光束的束腰半径和工作距离的解析表达式，进而对该光纤透镜做了数值模拟，讨论了无芯光纤和GRIN多模光纤的长度对光纤透镜参数的影响。

The main contents included the optimization of x-ray laser characteristics, the applied experimental demonstrations of diagnosing plasma with the x-ray laser as a probe using Moir6 deflectometer and Mach-Zehnder interferometer, respectively.

内容包括类镍银X射线激光的饱和输出以及光束质量的优化、摩尔偏折法和M-Z干涉法诊断等离子体电子密度分布信息的实验演示等。

When laser light strikes the surface of a tiny reflective display chip, made from liquid-crystal on silicon, the crystals both diffract the beams and alter the phase of the light waves, creating images that are in focus at all distances from the projector.

当激光打击一个极小的、由液晶硅制成的反射显示片，上面的晶体即会使光束产生衍射，也会改变光波的相位，产生来的是无论距离投影仪远近都处于焦点下的画面。

The crystal monochromator is a key device of the X-ray beamline. It uses crystals as dispersive elements to diffract and separate the synchrotron radiation, and provide X-ray monochmmatic light with a given energy bandwidth.

晶体单色仪是X射线光束线上的关键设备，它用晶体作为色散元件，衍射、分离具有连续光谱的同步辐射，向用户提供一定带宽的X射线单色光。

Algorithm for the design of diffractive optical elements for laser beam shaping.

一种用于光束整形的衍射光学元件设计算法。

The registers and players all use some kind of photocell, but what is more interesting from an Einsteinian perspective is the red beam of coherent light they shoot.

结帐柜檯及随身听都用到某种型式的光电池，但是从爱因斯坦的观点来看，更有趣的是它们所射出来的红色同调光束。

The research presented in this thesis concentrates on the design, model and fabrication process of electrostatically actuated micromachined micromirrors array for the optical scanning system. In this thesis, the emphasis is placed on the following four parts.

本文主要介绍了一种静电力驱动的微反射镜阵列的设计、模拟和工艺，这种微镜阵列采用表面机械加工的方法制作完成，是光束扫描领域中的核心器件之一。

The behavior of the axially pumped Nd:YVO4 laser with large pumping spot size is experimently and numerically studied.

我们分别从实验与模拟去试图了解当我们用大光束端泵浦掺钕钒酸钇雷射时，在简并共振腔下的雷射行为。

In general, the image of laser facular is a gray picture.

这为光束质量的评价提供了重要依据。

In view of the facts that traditional graphical construction has less pertinence to stray light and tracing different incidence angle rays is fatiguesome and more likely to omit some rays, we proposed a reverse ray-trace method based on the ray reversibility. According to the method, a dot-matrix source was set at the image plane. Each dot emitted rays to fully cover the system aperture. A detector surface, large enough to receive all possible rays from the source, was set at object plane.

针对传统作图法设计遮光罩的针对性不强，且追迹不同入射角的光线繁琐、容易遗漏的问题，本文提出一种逆向追迹法，依据光的可逆性，在像面处设置点阵面光源，每一点都发出充满系统孔径的光束，在物面设置足够大的探测面，使之有充足的余量记录所有到达物方的光线，利用该方法可以在探测面上直观地区分出非成像杂散光。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。