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相关概念视频

Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

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Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
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Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

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Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short...
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Atomic Absorption Spectroscopy: Interference01:25

Atomic Absorption Spectroscopy: Interference

859
Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
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相关实验视频

Updated: Jul 26, 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

Published on: October 11, 2016

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修改的马赫-泽恩德干扰仪用于空间连贯度测量.

F J Torcal-Milla, J Lobera, E M Roche

    Optics letters
    |June 15, 2023
    PubMed
    概括

    经过修改的马赫-泽恩德干扰仪提供了一种可靠的方法来测量光源的空间连贯性. 这种新设置简化了连贯度的确定,有助于优化干扰测量激光配置.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 干涉测量是干涉测量的方法.
    • 激光物理 激光物理

    背景情况:

    • 经典干扰仪是空间连贯度测量的标准.
    • 现有的方法需要多个点对,并且可能是繁的.
    • 经典设置中的局限性阻碍了对复杂连贯性的高效表征.

    研究的目的:

    • 提出一个修改的马赫-泽恩德干扰仪用于空间连贯度测量.
    • 为了能够测量完整的4D空间连贯性函数.
    • 为现有方法提供强大,便携和简化的替代方案.

    主要方法:

    • 开发了一种修改后的马赫-泽恩德干扰仪,该干扰仪包含了镜头.
    • 传入光束的侧向位移允许进行4D空间连贯映射.
    • 测量了一个2D投影 (零剪切) 来描述源.
    • 该系统在高速两腔激光器上进行了测试.

    主要成果:

    • 修改后的干扰仪成功测量了空间连贯性.
    • 观察到复杂的连贯度与激光脉冲能量有所不同.
    • 两种激光腔都显示了相似的,虽然不是对称的,在最大能量时的复杂连贯度.

    更多相关视频

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

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    Implementation of a Reference Interferometer for Nanodetection
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    Implementation of a Reference Interferometer for Nanodetection

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    相关实验视频

    Last Updated: Jul 26, 2025

    Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
    10:39

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    Published on: October 11, 2016

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    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
    12:19

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

    Published on: April 4, 2017

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    Implementation of a Reference Interferometer for Nanodetection
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    Implementation of a Reference Interferometer for Nanodetection

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    结论:

    • 经过修改的马赫-泽恩德干扰仪为空间连贯度测量提供了强大的,便携式的解决方案.
    • 该技术允许确定干扰度应用的最佳激光配置.
    • 这种方法适用于测试激光器以外的各种光源.