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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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Quasi-light Storage for Optical Data Packets
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基于连贯完美吸收的非线性光学开关.

Miao-Di Guo, Hai-Feng Li, Feng-Lei Wang

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    此摘要是机器生成的。

    我们展示了一种使用连贯完美吸收 (CPA) 和连贯完美反射 (CPR) 的新型光学开关. 这种开关可以使用不连贯场在CPA和CPR状态之间进行转换,从而实现高开关效率.

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    Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering CARS
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    科学领域:

    • 光学和光子学 在光学和光子学.
    • 量子光学是一种量子光学.
    • 材料科学 材料科学 材料科学

    背景情况:

    • 连贯完美吸收 (CPA) 和连贯完美反射 (CPR) 允许精确控制光学场.
    • 通常,CPA和CPR需要特定的输入场相位关系.

    研究的目的:

    • 为可转换的CPA和/或CPR功能提供双可视光学交换机提出方案.
    • 调查拟议交换机的控制机制和操作制度.

    主要方法:

    • 使用不连贯的场来切换CPA和CPR状态,即使输入探针束处于相位.
    • 分析开关在线性 (弱输入) 和非线性/双稳定 (强输入) 两种模式中的运行.

    主要成果:

    • 使用不连贯的交换场,证明了CPA和CPR状态之间的转换.
    • 从理论上讲,实现了最大的切换效率 η=1.1.
    • 展示了线性和非线性模式中的运行,效率对输入场强度敏感.

    结论:

    • 拟议的方案提供了一种新的方法,用于高效率的可二位式光学切换.
    • 强度依赖的效率表明在敏感光学检测中的潜在应用.