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相关概念视频

Photoelectric Effect02:26

Photoelectric Effect

When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...

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相关实验视频

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Direct Imaging of Laser-driven Ultrafast Molecular Rotation
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基于光子电子集成电路的连贯LiDAR引擎

Anton Lukashchuk1, Halil Kerim Yildirim2, Andrea Bancora1

  • 1Institute of Physics, Swiss Federal Institute of Technology Lausanne (EPFL), CH-1015, Lausanne, Switzerland.

Nature communications
|April 11, 2024
PubMed
概括

我们开发了一个晶圆尺度可制造的光电子LiDAR源,用于先进的感知系统. 这一突破使得高精度的远程传感能够实现,并集成了激光连贯性和频率敏捷性.

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Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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相关实验视频

Last Updated: Jun 21, 2026

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科学领域:

  • 光子学和半导体制造业 制造业
  • 激光雷达技术和光学工程 LiDAR技术和光学工程
  • 综合光子学和电子学.

背景情况:

  • 芯片规模集成对于部署先进的光子技术至关重要.
  • 频率调制连续波 (FMCW) LiDAR提供了诸如瞬间速度和距离检测,眼睛安全和干扰免疫等优势.
  • 由于严格的激光连贯性,频率敏捷性和光学放大器要求,FMCW LiDAR系统的晶圆规模集成面临挑战.

研究的目的:

  • 为了展示一个新的光电子LiDAR源.
  • 为了实现FMCW LiDAR系统的晶圆尺度制造兼容性.
  • 克服与激光连贯性和频率敏捷性相关的整合挑战.

主要方法:

  • 开发一个微电子高压任意波形发生器.
  • 混合光子电路与可调节的维尼耶激光器和压电驱动器的集成.
  • 整合了一个带有的波导放大器.
  • 使用与III-V半导体,化光子集成电路和SiGe CMOS技术兼容的晶圆尺度制造工艺.

主要成果:

  • 一个光子电子LiDAR源的成功演示.
  • 测距实验在10米距离以50kHz的获取速率实现了10厘米的精度.
  • 开发的激光源是交钥匙,无线化,并且与晶圆尺度制造兼容.

结论:

  • 展示的光电子LiDAR源可以在晶圆尺度上制造.
  • 这项技术可以与现有的LiDAR架构 (如焦点平面和光学相位阵列) 进行无集成.
  • 该系统解决了FMCW LiDAR集成的关键挑战,为广泛部署铺平了道路.