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相关概念视频

Deflection of a Beam01:19

Deflection of a Beam

234
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...
234
Bewley Lattice Diagram01:12

Bewley Lattice Diagram

534
The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
534
Shear on the Horizontal Face of a Beam Element01:16

Shear on the Horizontal Face of a Beam Element

154
To understand shear on the flat side of a prismatic beam element, consider the vertical and horizontal shearing forces, and the normal forces, acting on the element. The element's upper (U) and lower (L) sections, which are divided by the beam's neutral axis, are examined. The equilibrium of these forces is determined by applying the equilibrium equation, which helps identify the horizontal shearing force. This force is directly related to the bending moments and the cross-section's...
154
Design of Prismatic Beams for Bending01:23

Design of Prismatic Beams for Bending

213
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...
213

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相关实验视频

Updated: Jun 5, 2025

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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用于光束方向的阵列波导镜头.

Mostafa Honari-Latifpour1,2, Ali Binaie1, Mohammad Amin Eftekhar3

  • 1Department of Physics, Queens College of the City University of New York, Queens, 11367, New York, USA.

Nanophotonics (Berlin, Germany)
|December 5, 2024
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种用于集成光学系统的新型阵列波导镜头. 这种新设计使得光束转向效率高,视野广,克服了传统平面透镜制造中的挑战.

关键词:
灯束转向的方向盘.集成的波导镜头镜头.光子网格的光子网格.

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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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相关实验视频

Last Updated: Jun 5, 2025

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Published on: April 1, 2020

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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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科学领域:

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

背景情况:

  • 传统的光学信息处理平面镜头在芯片上实现时面临挑战,因为复杂的梯度指数控制.
  • 束方向是集成光子电路在像成像和传感等应用中的关键功能.

研究的目的:

  • 引入一种新的方法,用于在芯片上的光束方向使用阵列波导镜头.
  • 通过工程 evanescent 合,同时展示平面透镜和离芯片辐射.

主要方法:

  • 一系列带有细分尾巴的联接波导阵列的设计.
  • 在相邻的波导通道之间进行工程 evanescent 合.
  • 使用合模式分析和全波数值模拟.

主要成果:

  • 用单个组件实现平面透镜和离芯片辐射.
  • 证明了光束转向,视野大约为60度.
  • 使用具有等距离传播常数的光子网格模拟了一个连续的抛物线索引配置文件.

结论:

  • 拟议的阵列波导镜头为集成光子电路中的光束方向提供了一个紧而高效的解决方案.
  • 这项技术可以应用于先进的成像,传感和计量系统.
  • 该设计克服了与传统渐变指数镜头相关的制造挑战.