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相关概念视频

Phase Contrast and Differential Interference Contrast Microscopy01:26

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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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Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
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相关实验视频

Updated: Sep 11, 2025

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

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使用旋转四步相位移方法的束-菲佐干扰仪.

Daju Lu, Dayong Zhang, Zhongming Yang

    Applied optics
    |August 12, 2025
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    概括
    此摘要是机器生成的。

    我们开发了一种新型的波束-菲佐干扰仪,用于精确的光学表面测量. 这种新方法实现了高精度,为光学计量应用提供了可靠的技术.

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    Direct Imaging of Laser-driven Ultrafast Molecular Rotation
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    Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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    相关实验视频

    Last Updated: Sep 11, 2025

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

    Published on: August 12, 2013

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    Direct Imaging of Laser-driven Ultrafast Molecular Rotation
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    Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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    科学领域:

    • 光学和计量学 在光学和计量学.
    • 干涉测量是干涉测量的方法.
    • 光学工程是指光学工程.

    背景情况:

    • 螺旋束干扰仪对于光学计量学至关重要.
    • 共同路径的Fizeau旋干扰仪为高精度的光学表面形状测量提供了优势.
    • 之前关于菲泽奥旋干扰仪的报道是有限的.

    研究的目的:

    • 提出和演示一个波束-菲佐干扰仪.
    • 为了实现高精度的光学表面形状测量.
    • 为了验证性能与商业Fizeau干扰仪相比.

    主要方法:

    • 一个波束-菲佐干扰仪的开发.
    • 实现一个旋转四步相位移方法.
    • 通过物体旋转引入角度相位移.

    主要成果:

    • 实现了高精度的光学配置测量.
    • 测量配置的偏差为1.5164λ (PV) 和0.0933λ (RMS).
    • 测量概况偏差的根平均平方误差小于9.33%.

    结论:

    • 拟议的波束-菲泽奥干扰仪为光学表面测量提供了可靠的方案.
    • 旋转四步相位移方法提高了测量精度.
    • 这项工作促进了束干扰仪在光学计量学中的应用.