光束

The output beam quality can be improved by adopting Gaussian reflectivity coupling output mirror, using plano-convex unstable cacity, Nd: YAG, and electro-optic Q setting solid laser in the experiment.

使用高斯反射率耦合输出镜可较好地改善其输出光束质量，设计了平-凸非稳腔，使用Nd：YAG，电光调Q 固体激光器进行实验，获得了较为平滑的远场光强分布，实验结果表明高斯反射率输出镜可较好地改善固体激光器中非稳腔输出光束质量。

The theories of cuneiform prism and series neutral glass slices used as laser attenuator are analyzed in this paper. An aberration-free laser quantitative attenuator made of cuneiform prism is adopted and a series of neutral attenuated slices are used for adjusting laser-beam enegy at the same time.

分析了楔形镜和中性玻璃衰减片组对光束的衰减原理，采用反射式楔形镜作为无像差定量衰减器，并同时使用中性玻璃衰减片组微调光束能量。

To meet the demand of the 60 nm spatial resolution,the zone plate imaging technology must be employed.

在X射线成像光束线光学系统的设计基础上，对光束线的能量分辨率和光子通量进行了计算，并对双晶单色器第一块晶体的热载影响进行了模拟分析，同时利用波带片成像技术对实验站进行了设计，达到了60 nm的空间分辨率。

The retardation of the quarter-wave plate is obtained through the four light intensity values.

通过检偏器组的四束光束的光强由四象限探测器同时测量。1/4波片的相位延迟量由这四光束的光强得到。

Iterative algorithm based on fuzzy control theory is put forward for designing diffractive optical elements for laser beam shaping, aiming at decreasing both mean square error and top beam uniformity of the output beam.

在光束整形衍射光学元件的设计中，为同时减小输出光束的均方根误差和顶部不均匀度值，提出了模糊控制迭代算法。

Based on the aberrationless model of self-focusing, the location and intensity of hot image of Guassian optical beams is investigated.

本文以高斯光束为例，基于无像差自聚焦理论分析了有限束宽光束的&热像&形成规律。

Because the scale Gaussian beam description is not accurately satisfies Maxwell equation, it is not suitable for the study of interaction between the beam and small spherical particle.

由于标量高斯光束模不是麦克斯韦方程的准确解，因而不能用于研究粒子与聚焦光束相互作用问题。

We mainly refered to the one of those improved algorithms of Gerchberg-Saxton.With the computer simulation and drawing program, the simulated diffraction patterns were gotten in this paper, the results agreed with the anticipated diffraction patterns; in the paper we also design the computer optical elements that can shape the laser beam into a double circle shape,a lamp shape and so on.

同时，本文还用标量理论设计了把高斯光束整形为双圆斑形光束的计算机光学元件，文中主要是参考改进的GS(Gerchberg-Saxton)算法；通过计算机模拟，得到了计算机光学元件表面的相位浮雕图。

Applications of multi-component glass fiber, silica fiber and polymer optical fiber to medical illumination are introduced.

介绍了多组分玻璃光纤、石英光纤和聚合物光纤在医学照明上的应用，现今医学上应用的光纤传光束以多组分玻璃光纤为主，传光束直径多在0。

The theoretical packing fraction of the bundle of optical fibers which are arrayed in hexagon with round end-tip is calculated by two methods,and the value of packing fraction was 90.69% which was the same as the value of bundle of optical fibers that were arrayed in hexagon with rectangle end-tip.

采用二种方式推算了光纤采用六边形排列配用圆形端套光纤传光束的理论敛集率，其值为90.69%，这一值同光纤采用六边形排列配用长方形端套的传光束理论敛集率一致。

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％。