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相关概念视频

X-ray Crystallography02:18

X-ray Crystallography

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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...
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Deflection of a Beam01:19

Deflection of a Beam

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Accurately determining beam deflection and slope under various loading conditions in structural engineering is crucial for ensuring safety and structural integrity. Singularity functions offer a streamlined approach to analyzing beams, especially when multiple loading functions complicate the bending moment equation.
Singularity functions, described in an earlier lesson, are powerful mathematical tools that represent discontinuities within a function commonly encountered in structural loading...
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相关实验视频

Updated: May 30, 2025

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

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没有衍射的部分连贯的Pearcey光束.

Tianyu Cao, Shengtai Jin, Qian Chen

    Optics express
    |January 29, 2025
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    概括
    此摘要是机器生成的。

    研究人员创建了一个不衍射,部分连贯的Pearcey光束,可以抵抗扭曲. 这种强大的光束显示出可靠的信息传输的前景,特别是在具有挑战性的环境中.

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    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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    相关实验视频

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    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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    科学领域:

    • 光学和光子学 在光学和光子学.
    • 波浪传播 波浪传播

    背景情况:

    • 部分连贯的光束提供了环境弹性,但受到 difraktion.
    • 衍射会扭曲传统光束,限制诸如光学信息传输之类的应用.

    研究的目的:

    • 从理论和实验上构建一个非衍射,部分连贯的皮尔西光束.
    • 在不同的连贯性条件下研究光束的传播特性.

    主要方法:

    • 一个部分连贯的皮尔西光束的理论建模.
    • 试验验证光束的非折射性质.
    • 在传播过程中分析光束不变性.

    主要成果:

    • 成功构建了一个非衍射,部分连贯的皮尔西光束.
    • 在不同相干状态的传播过程中证明了光束的不变性.
    • 实验结果与理论预测非常接近.

    结论:

    • 非衍射,部分连贯的皮尔西光束在传播过程中保持其完整性.
    • 这种光束显示出作为在恶劣环境中进行光学通信的强大信息载体的潜力.