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相关概念视频

X-ray Crystallography02:18

X-ray Crystallography

23.8K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
23.8K
Wedges01:24

Wedges

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A wedge is a simple machine that serves various purposes, such as adjusting the elevation of structural or mechanical parts, providing stability for heavy objects, and splitting a body into two parts. This versatile tool can amplify an applied force, making it easier to manipulate large or heavy objects.
Consider using a wedge to lift a heavy slab. Here, the wedge functions by converting the applied force into a much larger force directed almost perpendicular to the initial force. This...
1.1K

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相关实验视频

Updated: May 30, 2025

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

Published on: September 26, 2014

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在模拟具有多个形的多层结构的光衍射上.

Dmitry A Bykov, Evgeni A Bezus, Leonid L Doskolovich

    Journal of the Optical Society of America. A, Optics, image science, and vision
    |January 31, 2025
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    概括
    此摘要是机器生成的。

    我们开发了一种更快的方法,用来模拟分层结构的光学特性,这对于在先进的成像系统中使用的线性变量过器 (LVF) 至关重要. 这种新方法可以显著加快计算速度,同时保持准确性.

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    相关实验视频

    Last Updated: May 30, 2025

    Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
    10:35

    Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

    Published on: September 26, 2014

    12.2K
    Scattering And Absorption of Light in Planetary Regoliths
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    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

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    科学领域:

    • 光学和光子学 在光学和光子学.
    • 材料科学 材料科学 材料科学
    • 计算物理 计算物理

    背景情况:

    • 具有小角的分层结构作为线性变量过器 (LVF) 起作用.
    • LVF是微光谱仪,传感器和高光谱成像中的关键组件.
    • 精确的光学属性模拟对于LVF设计和优化至关重要.

    研究的目的:

    • 引入一种新的方法来模拟多层形结构的光学特性.
    • 提高复杂的LVF配置的设计和研究.
    • 为了提高光学建模中的计算效率.

    主要方法:

    • 利用散射矩阵形式主义来建模具有形层的分层结构.
    • 将该方法应用于具体的例子:一个带有布拉格涂料的单LVF和一个三LVF.
    • 将模拟速度和准确性与富里埃模式方法进行比较.

    主要成果:

    • 拟议的散射矩阵方法在严格的数值模拟中提供了两个数量级的速度增加.
    • 使用新方法的模拟显示了与富里埃模态方法高度一致的结果.
    • 证明了该方法对复杂结构的建模能力,包括具有平顶共振传输峰值的三LVF.

    结论:

    • 散射矩阵形式主义提供了一种高效和准确的方法来模拟包含形层结构的光学特性.
    • 这种方法对于先进的线性变量过器的设计和分析非常有前途.
    • 开发的技术有助于更快地代和探索新的LVF设计.