1) gauze diffraction
网格衍射
1.
After discussing the theory of gauze diffraction of light wave emitted from two linear light source with Fourier transformation an experimental method of determinating light wavelength by gauze diffraction is offered.
用傅里叶变换讨论了以网格（二维正交粗光栅）为衍射屏的双（线）光源衍射理论，并介绍了用网格衍射测量光波波长的实验方法。
2) Bragg diffraction
布拉格衍射
1.
A rigorous coupled wave theory for the Bragg diffraction of a Gaussian beam in the uniaxial crystal is derived and a group of rigorous coupled wave equations and diffraction efficiency formula are obtained in terms of the proper coordinate transformation and Riemann method.
利用适当的坐标变换和黎曼方法建立了高斯光束在单轴晶体中布拉格衍射的严格的耦合波理论 ,获得了一组严格的耦合波方程和衍射效率计算公式 ,讨论了衍射效率随折射率调制量的关系以及波长选择性和角度选择性 ,同时分析了衍射效率对再现光宽度的要求。
2.
A deflection angle of acoustooptical Bragg diffraction on an acoustic-optical medium is modulated by ultrasonic,and on the other hand,surface acoustic wave(SAW)propagation velocity can be influenced by rotational velocity Ω of SAW medium.
声表面波(SAW)陀螺效应表现为SAW介质旋转角速度Ω对SAW波速的调制作用,以及对布拉格衍射角的调制作用。
3.
According to the theory of acoustooptic interaction of normal Bragg diffraction, a chirp acoustooptic surface wave transducer whose central frequecy and working bandwith are 200 MHz and 300 MHz respectively is designed and manufactured on LiNbO 3 substrate.
根据正常布拉格衍射声光相互作用原理 ,设计并制作了以 Li Nb O3 晶体作为衬底、中心频率为 30 0 MHz、工作带宽为 2 0 0 MHz的倾斜式变周期表面波声光偏转器。
3) Bragg diffraction
布喇格衍射
1.
Birefractive index and Bragg diffraction have been oboserved and measured in the crystals.
测量和研究了晶体的双折射率和布喇格衍射。
2.
The elementary principle of the method is to get out acoustic information from acoustic solid medium firstly through Bragg diffraction,and then to measure the difference of deflection angular from reference beam of light.
该方法的核心是通过声光布喇格作用,把SAW陀螺效应引起的声速变化信息寄载到布喇格衍射光中,通过检测布喇格衍射角度推算出固体介质的旋转角速度。
3.
The principle of the two dimensional acoustooptic Q switch is presented,the formulas of the diffraction efficiency and diffraction loss of the AO Q switch with normal Bragg diffraction is derived,the relationship between One dimensional and Two dimensional Bragg diffraction is analyzed.
描述了两维声光Ｑ开关的基本原理，详细推导出正常布喇格衍射的两维声光Ｑ开关衍射效率和衍射损耗的表达式，分析了两维布喇格衍射和一维布喇格衍射之间的关系，并给出了在驱动功率４０Ｗ、光束直径５ｍｍ、光波长１。
4) superlattice diffraction
超晶格衍射
5) Bragg diffraction
布喇格衍射，布喇格绕射
6) grid mapping
网格映射
1.
Using Finite Element Method(FEM) to simulate the flanging process,a kind of grid mapping method was put forward to acquire the trimming line.
在有限元仿真计算模拟翻边过程的基础上,提出了网格映射法来实现修边线的精确计算。
补充资料：魏森贝格衍射仪
分子式：
CAS号：
性质：一种以活动胶片法逐层收集单晶X射线二维衍射数据的衍射仪。仪器运转收集零层数据时以单色特征X射线垂直入射于安置在仪器中轴测角头上已沿某一晶轴定向的单晶上，并使晶样在沿晶轴旋转时，同步地控制围绕中轴圆柱状的感光胶片筒沿平行于轴线的正、反向作往复的平移折返运动(晶体每转2°，胶片筒平移1mm)。实验中还需使用层线屏以实行分层收集二维衍射数据。在收集非零层数据时，实行等倾斜法，入射X射线将以特定倾角μ与转轴斜交。
CAS号：
性质：一种以活动胶片法逐层收集单晶X射线二维衍射数据的衍射仪。仪器运转收集零层数据时以单色特征X射线垂直入射于安置在仪器中轴测角头上已沿某一晶轴定向的单晶上，并使晶样在沿晶轴旋转时，同步地控制围绕中轴圆柱状的感光胶片筒沿平行于轴线的正、反向作往复的平移折返运动(晶体每转2°，胶片筒平移1mm)。实验中还需使用层线屏以实行分层收集二维衍射数据。在收集非零层数据时，实行等倾斜法，入射X射线将以特定倾角μ与转轴斜交。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条