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groove density
相关语句
  线密度
     Theoretic analysis show that the changes of groove density, line-profile and grating substrate(blank) shapes endow gratings the ability of focusing and reducing aberration, so the amount of reflective mirrors are decreased, the efficiency and resolving power of instruments are improved.
     理论分析表明,有目的的改变光栅的线密度分布(即周期分布)或者改变光栅基底的面形,有可能使光栅具有自动聚焦和消像差的能力,从而可以减少系统中的光学元件,提高仪器的分辨率。
短句来源
     As a result of shape change and groove density variation,it not only improves the focusing condition,but also affectes higher order aberrations such as coma aberration of the imaging system.
     由于光栅面形及其线密度的变化,不仅对光栅成像的聚焦特性有所改善,对彗差等高阶次像差的影响也是不可忽略的。
短句来源
     The geometry theory of holographic variable line space(VLS) gratings was briefly described. The essential condition which the groove density distribution equation obtained by holographic recording must be in agreement with the expected equation after analysis of the varying coefficient of line space and the limitations of the holographic recording parameters on the groove density distribution equation.
     简述全息变间距光栅几何理论,通过分析其线距变化系数,研究了全息记录参数对线密度分布方程系数的约束,给出了使全息记录得到的线密度分布方程与期望方程相吻合的必要条件。
短句来源
     Primary researches on the groove density variations of bending grating were experimented.
     对压弯光栅的线密度进行了实验研究。
短句来源
     Consequently,the long trace profiler was used to test the curved substrates precisely and the groove density of the gratings were measured by diffractive method.
     其后采用长程面形仪测试压弯后光栅面形,使用衍射法测试压弯前后光栅线密度,从而得到线密度的变化曲线。
短句来源
  “groove density”译为未确定词的双语例句
     Study on Coefficients of Groove Density Distribution Equation of Plane Holographic Variable Line Space Gratings
     全息平面变间距光栅线密度分布方程系数研究
短句来源
     The groove density measurement of VLS plane grating by diffraction method
     变间距光栅刻线密度的测试精度分析
短句来源
     Performance of a grating groove density measuring system by diffraction method
     变间距光栅刻线密度测试系统的性能评价
短句来源
     Determination of groove density for bending gratings
     压弯光栅线密度检测
短句来源
     Analysis of groove density for diffraction grating during bending
     压弯光栅线密度变化分析
短句来源
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  相似匹配句对
     Determination of groove density for bending gratings
     压弯光栅线密度检测
短句来源
     Analysis of groove density for diffraction grating during bending
     压弯光栅线密度变化分析
短句来源
     The Second Density
     密度的第二性
短句来源
     Density of utility.
     效用密度。
短句来源
     And the strength of the groove was evaluated.
     并对减应力区的强度进行了分析。
短句来源
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  groove density
Various methods for the recording of blazed holographic diffraction gratings are presented and the regions in the wavelength-groove density plane for which they can be used are shown.
      
The investigated variables are: pulse energy, delay time, integration time, grating groove density, object lens distance deviation and crater depth.
      
In high-resolution spectra of fast ion beams, employing a grating of high groove density in a 2m grazing-incidence monochromator, asymmetric line broadening has been observed.
      
The MLD grating based Petawatt compressor necessitates a new pulse stretcher using the same groove density as the compressor gratings.
      
The use of low-groove density gratings makes it more practical to obtain a large spectral bandpass.
      
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The groove density parameters are important to VLS plane gratings monochromator. It is necesary to make sure that the parameters were specified and their errors were acceptable. A diffraction method was used to measure the groove density of VLS grating for system. It included a light source (He - Ne laser), a collimator, a goniometer with angle encoder, a autocollimator, a linear stages, a detector(CCD) and the guting to be tested. The main error sources in the measuring system were analyzed in...

The groove density parameters are important to VLS plane gratings monochromator. It is necesary to make sure that the parameters were specified and their errors were acceptable. A diffraction method was used to measure the groove density of VLS grating for system. It included a light source (He - Ne laser), a collimator, a goniometer with angle encoder, a autocollimator, a linear stages, a detector(CCD) and the guting to be tested. The main error sources in the measuring system were analyzed in details. It turned out that the measuring system proposed was adequated for our purpose. A compensation method was analyzed for the monochromator if the groove density parameters were deviated from the design value.

介绍了衍射法测量变间距光栅线密度的测量系统。该测量系统由激光器、准直镜、光栅转动台(含角度测量仪)、直线工作台、光栅调节架、探测器和待测光栅组成。分析了系统中各种误差对测量精度的影响,以及变间距光栅参数的变化对光学系统的影响和补偿办法。计算表明,该系统的测试精度满足光束线对光学系统的性能要求。

Varied-line-space grating is very useful in synchrotron radiation devices and laser fusion devices, but there are no good ways to measure them. The line density of varied-line-space gratings have been measured by using interferometry. The principle and geometry are introduced, the methods of data processing and the results are given. On the surface of grating to be tested, quantity and density of diffracted light interferometric fringes are difference of interferometric fringes of incident light and grating...

Varied-line-space grating is very useful in synchrotron radiation devices and laser fusion devices, but there are no good ways to measure them. The line density of varied-line-space gratings have been measured by using interferometry. The principle and geometry are introduced, the methods of data processing and the results are given. On the surface of grating to be tested, quantity and density of diffracted light interferometric fringes are difference of interferometric fringes of incident light and grating groove quantity multiplied. Two sets of waves are in the common path, it is easier to make adjustment and measurement. Interference in interferometric image is removed by mid-value filtering method. Two projects are put forward for different interference fringes. The invariance of relative density is brought forward. The grating diffracts two coherent incident waves, the fringes appear, the density relates to groove density, if the incidence angles and the diffraction orders and the position of fringes are known, the groove density can be calculated. The method can satisfy the requirements of varied-line-space gratings, and it is suitable in the measurement of varied-line-space gratings and can reach some precision. Finally, the method is suggested into fabrication of holographic varied-line-space gratings.

变线距光栅在同步辐射装置、激光核聚变装置上有着广阔的应用前景 ,它的制作和检测方法尚未成熟。用干涉法测量变线距光栅的线密度 ,给出了测量原理、实验中的光路、数据处理的方法、测量结果。在待测光栅表面 ,衍射光干涉条纹的数量和密度是入射光干涉条纹和倍增后光栅的刻线之差。采用共光路的方案 ,使光路具有很强的抗干扰能力。用中值滤波消除干涉图像中的干扰。针对不同的干涉条纹 ,讨论和比较了两种测量方法 ,提出相对密度不变性。证明了干涉法完全可以用于变线距光栅的线密度测量 ,并能达到一定的精度 ,初步解决了检测问题 ,认为这种方法也可以用于变线密度光栅的加工中。

In order to derive the effect of an arbitrary bending curve in tangential orientation on a grating,a general expression about the transform of groove density was represented in theory,and simulated by Finite Element Method(FEM) using ABAQUS/Standard.The results show that the groove density was severely determined by the attribute of diffractive grating and bending curve.Sequentially,the imaging properties of grating monochromator due to bending were numerically pointed out with a simple example.As...

In order to derive the effect of an arbitrary bending curve in tangential orientation on a grating,a general expression about the transform of groove density was represented in theory,and simulated by Finite Element Method(FEM) using ABAQUS/Standard.The results show that the groove density was severely determined by the attribute of diffractive grating and bending curve.Sequentially,the imaging properties of grating monochromator due to bending were numerically pointed out with a simple example.As a result of shape change and groove density variation,it not only improves the focusing condition,but also affectes higher order aberrations such as coma aberration of the imaging system.

理论上给出了光栅在子午面内弯曲为任意面形后,光栅线密度的变化关系,并采用有限元分析软件ABAQUS/Standard进行了模拟分析。理论与模拟分析的结论说明,压弯后光栅线密度是由光栅本身参数及压弯面形严格决定的。在此基础上设计一个简单的单色器,并在数值上给出了压弯后光栅线密度变化对单色器件性能的影响。由于光栅面形及其线密度的变化,不仅对光栅成像的聚焦特性有所改善,对彗差等高阶次像差的影响也是不可忽略的。

 
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