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相关概念视频

Confocal Fluorescence Microscopy01:16

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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
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基于元全息图PCSEL集成的紧结构光源生成.

Wen-Cheng Hsu1,2, Chia-Hsun Chang1, Yu-Heng Hong3

  • 1Department of Photonics, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan.

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概括

这项研究展示了使用光子晶体表面发射激光和超表面全息图的紧全息图像重建. 这种集成提供了高输出功率和广泛的视野成像,用于3D应用程序,没有额外的镜头.

关键词:
一个全息图.在Metasurfaces上使用.光子晶体表面发射激光器发射激光器结构光的结构光.

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科学领域:

  • 光学和光子学 在光学和光子学.
  • 地表表面技术的技术.
  • 激光工程 激光工程

背景情况:

  • 超表面提供了新的光学功能,但与垂直腔表面发射激光器 (VCSEL) 集成面临限制.
  • 之前的VCSEL集成遭受了低输出功率和大的分歧角度.
  • 在提高功率的同时,VCSEL阵列需要额外的镜头,并且很庞大.

研究的目的:

  • 用一种新的紧集成方法实验证明全息图像的重建.
  • 为了克服以前VCSEL-metasurface集成的局限性.
  • 展示超表面的灵活设计,用于结构光生成和高性能成像.

主要方法:

  • 将光子晶体表面发射激光与定制设计的超表面全息图集成在一起.
  • 用于结构光生成和全息图像重建的超表面设计.
  • 实验设置用于展示全息成像能力.

主要成果:

  • 成功重建了全息图像.
  • 实现了大约毫瓦的高输出功率.
  • 展示了具有广泛视野的均图像.
  • 消除了收集镜头的需要.

结论:

  • 光子晶体激光器和超表面的紧集成使得高性能全息成像成为可能.
  • 这种方法克服了以前的局限性,提供了高功率和广的视野.
  • 该技术适用于先进的3D成像和传感应用.