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相关概念视频

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:

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相关实验视频

Updated: Jul 1, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
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一个电气注入的固态表面声波波声波激光声波激光.

Alexander Wendt1, Matthew J Storey2, Michael Miller2

  • 1Wyant College of Optical Sciences, University of Arizona, Tucson, AZ, USA.

Nature
|January 14, 2026
PubMed
概括
此摘要是机器生成的。

研究人员在单个芯片上开发了一种固态表面声波 (SAW) 声激光器. 这种紧的设备产生连贯的声波,使小型SAW系统能够在没有外部射频源的情况下使用.

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Fabrication of Surface Acoustic Wave Devices on Lithium Niobate
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相关实验视频

Last Updated: Jul 1, 2026

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科学领域:

  • 声学和固态物理学的物理.
  • 微和纳米系统工程 微和纳米系统工程
  • 光子学和量子技术的使用.

背景情况:

  • 表面声波 (SAW) 对于过器,传感器和微流体等技术至关重要.
  • 现有的SAW生成方法在性能,频率和小型化方面存在局限性.
  • 需要紧,高效和高频的SAW源.

研究的目的:

  • 介绍一款全新的,完全固态的,单芯片表面声波 (SAW) 声激光器.
  • 为了演示一个紧的SAW设备与集成的半导体增益连贯振荡.
  • 探索在芯片上的SAW源的增强性能和小型化的途径.

主要方法:

  • 使用集成的,电注入的半导体增益介质制造尼奥巴特SAW共振器.
  • 描述设备在激光值偏差以下和以上的行为.
  • 详细的理论建模,以预测性能改进和扩展.

主要成果:

  • 证明了SAWs在36V值以上的自主连贯振荡.
  • 在1GHz时,实现了芯片上的连续声学输出功率为-6.1dBm.
  • 观察到分辨率有限的线路宽度<77 Hz和低载体相位噪声.

结论:

  • 开发的SAW声激光器代表了芯片上声学生成的重大进步.
  • 该设备能够实现超高频SAW源和高度小型化的SAW系统.
  • 未来的工作可能会导致mHz的线宽,高功率效率,以及在10 GHz下低于550 μm2的足迹.