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相关概念视频

Cascaded Op Amps01:16

Cascaded Op Amps

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Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
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对于先进的集成设备的级联元表面的审查.

Lingyun Zhang1, Zeyu Zhao1, Leying Tao1

  • 1State Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, Tianjin 300072, China.

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级联式元表面,叠加光学层,通过电磁合来增强光控制. 这些先进的设备为紧的多功能光学系统提供了新的功能.

关键词:
级联式的元表面.超材料是指金属材料.可调节的地表表面.

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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
  • 电磁主义 电磁主义

背景情况:

  • 超表面提供独特的光操纵能力.
  • 单层超表面在功能和性能方面存在局限性.
  • 级联的元表面提供了一条克服这些局限性的途径.

研究的目的:

  • 审查级联元表面的原理,设计和应用.
  • 为了突出近场和远场电磁合在级联结构中的优点.
  • 探索级联元表面的静态和动态配置.

主要方法:

  • 讨论控制近场和远场合的物理原理.
  • 对静态和动态级联元面的设计方法的分析.
  • 对级地表应用的实验和理论研究的回顾.

主要成果:

  • 近场合可实现新的共振模式,用于增强光控制 (相位,偏振,传播).
  • 远场合允许传统的光学设计方法用于诸如偏差校正和光谱学等应用.
  • 动态配置提供可调节的光学特性,用于光束方向,多焦镜头和全息.

结论:

  • 与单层相比,级联元表面显著提高了光学功能.
  • 这些结构对于开发多功能和紧的光学系统至关重要.
  • 未来的研究将重点关注先进光学设备的小型化和集成.