光栅

We firstly bring forward and realize technologies of arbitrarily shaping laser pulse in the time domain by chirped pulse stacking, programmablely shaping spatial intensity by crystal liquid diaphragm, focused spot smoothing using angular spectrum dispersion by special gratings and detecting and compensating the small patch wave front aberration. Precise, programmable, efficient and \'all parameters\' condition of high power laser system has been obtained.

首次提出并实现了啁啾脉冲堆积型的时间波形任意整形；液晶光阀可编程光强空间整形；特殊光栅光谱角色散焦斑束平滑和小尺度波前畸变的探测和补偿，从而对高功率激光系统的激光束实现了高精度、可编程、有效的"全息"控制。

From the point of view of eliminating angular dispersion, the planar tilt errors and groove parallelism can ompensate each other, and the groove-width difference and planar errors of tip can also compensate each other.

标 签 光学器件拼接光栅压缩器时域特性脉冲展宽偏差补偿 optical devices tiled grating compressor temporal property pulse-broadening alignment errors compensation

Grating sensor is a type of accurate sensor which is widely used for linear and angular displacement measurements.

引 言 光栅位移传感器(包括直线位移和角位移)是一类广泛使用的精密测量器件[1，2 ] 。

On the basis of autocollimation principle,combining with grating interference principle, a new autocollimation interferometry method was put forward which can measure three-dimensional angular distortion.

以自准直原理基础，将光栅干涉原理引入，提出了一种能对船体三维变形测量的自准直干涉法。

How to improve the resolution and precision of photoelectric Autocollimator by Moiré fringe.

利用光栅叠加所形成的莫尔条纹在光学上提高光电自准直仪的分辨率和精度。

In order to make up for the deficiency that photoelectric autocollimator does not have high resolution and large measuring range at present, an auto-collimation angular measurement method based on imaging grating is presented.

针对目前光电自准直仪难以做到既有高分辨力同时又有大的测量范围的不足，提出一种成像式光栅自准直测角方法。

Results show that time delay of 2000 ns can occur in an apodized FBG with length of 50 meters and corresponding average velocity is

对孤子时延进行的数值仿真表明， 50 m的变迹光栅中可产生2000 ns的时延，平均速度仅相当于均匀光纤中的0.1倍。

A study of the writing microstructures on the surface of azobenzene polymers［J］.

利用偏振全息记录可重复擦写的偶氮相位光栅［J］。

And successful applications of strain sensors in the bowstring arch bridge and tie bar cable replacement in the construction.

应用结果表明，光纤光栅测力传感器可有效监测钢管混凝土系杆的受力状况。

In this paper,using numerical solution method of vector diffraction theory,we discuss the dependence of reflectivity upon structural parameters of subwavelength grating,particularly upon substrate thickness.It can be used as the basis for design and fabrication of binary optical element with proper antireflection property.

文摘：利用矢量衍射理论的数值求解方法，研究了亚波长光栅结构参数对反射率的影响，特别是基底厚度对反射率的影响，这些为设计和制作具有优良的抗反射性能的二元光学元件提供了设计依据。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。