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相关概念视频

Design of Prismatic Beams for Bending01:23

Design of Prismatic Beams for Bending

241
The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and...
241
Deflection of a Beam01:19

Deflection of a Beam

267
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...
267

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相关实验视频

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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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可扩展和坚固的梁形状使用apodized鱼骨格合器.

Chad Ropp, Dhriti Maurya, Alexander Yulaev

    Optics express
    |December 2, 2023
    PubMed
    概括

    我们开发了一种新的鱼骨格合器,用于高效的芯片上到自由空间光学合. 这种设计使精确的光束成型和在461nm的毫米尺度光束生成成为可能,克服了制造限制.

    科学领域:

    • 光子学和光学工程的工程.
    • 纳米光子学 纳米光子学
    • 集成光学 集成光学 集成光学

    背景情况:

    • 在芯片上引导和自由空间光学模式之间的高效合对于光子集成电路至关重要.
    • 形格合器对于精确的空间模式匹配至关重要,但它们的制造往往受到最小特征尺寸的限制,特别是对于短波长或大面积格.

    研究的目的:

    • 展示一种新型的鱼骨格合器,用于精确的光束成型和在461 nm的毫米尺度光束生成.
    • 为了克服与传统的apodized格联器相关的制造限制.

    主要方法:

    • 一个鱼骨格格合器的设计和制造.
    • 使用一种设计,将最小特征尺寸与光学散射强度分开.
    • 使用与标准制造工艺相容的商业造工厂光刻法.

    主要成果:

    • 实现了精确的光束成型和在461nm波长产生毫米尺度光束.
    • 证明了光学发射的顺开启和持续控制.
    • 展示了与商业造工厂光刻法的兼容性,降低了对制造分辨率和可变性的敏感性.

    结论:

    • 鱼骨格合器为高效的光功率合提供了可行的解决方案,并增强了光束控制.

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  • 这种方法克服了传统网格和低波长元网格的制造限制.
  • 这项技术适用于使用标准光刻法进行大规模生产,为先进的光子设备铺平了道路.