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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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In Situ Measurement of Vacuum Window Birefringence using 25Mg+ Fluorescence
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测量双断层元素相位减速的替代方法.

Jiun-You Lin, Chen-Yi Chang, Pin-Yu Lai

    Applied optics
    |August 12, 2025
    PubMed
    概括

    这项研究引入了一种新的方法,用于使用模拟测量双断层材料的相延迟. 该技术通过分析干扰模式,准确地确定相位延迟,实现高精度.

    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

    背景情况:

    • 双折射元件在光学系统中至关重要.
    • 精确测量相位减速对于设备的表征至关重要.

    研究的目的:

    • 开发一种替代的,精确的方法来测量相位延迟.
    • 为了建立相位减速和边缘倾斜之间的线性关系.

    主要方法:

    • 正向偏振光束的螺旋调制.
    • 使用图像处理和中枢点分析进行干扰模式分析.
    • 确定中央黑暗边缘的倾斜角度.

    主要成果:

    • 阶段减速和边缘倾斜角度之间建立了线性关系.
    • 从边缘角度准确地推断出相位延迟.
    • 在一个广泛的范围 (-180°至180°) 中,大约达到0.12°的测量不确定性.

    结论:

    • 拟议的旋调制方法为相延缓测量提供了可行和准确的方法.
    • 这种技术为光学计量学和双断层材料表征提供了有价值的工具.

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