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相关概念视频

Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

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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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相关实验视频

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Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT
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Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT

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大规模并行FMCW激光雷达具有厘米范围的分辨率,使用电光频.

Bibo He, Chenbo Zhang, Jiachuan Yang

    Optics letters
    |June 30, 2023
    PubMed
    概括

    本研究介绍了使用频率调制连续波 (FMCW) 激光器进行高分辨率3D成像的电光频率. 新方法实现了1厘米范围的分辨率和高级应用的高测量速率.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 传感技术 传感技术
    • 先进的成像成像技术 (Advanced Imaging) 是一种先进的成像技术.

    背景情况:

    • 频率调制连续波 (FMCW) 光检测和距离 (lidar) 对于3D成像和自动驾驶至关重要.
    • 目前使用soliton微的FMCW激光雷达提供多通道功能,但由于带宽狭窄,范围分辨率有限.
    • 需要使用具有增强范围分辨率和高测量速率的FMCW激光雷达系统.

    研究的目的:

    • 提出和演示一种新的FMCW激光雷达系统,使用级联调制器电光 (EO) 频率.
    • 为了克服现有的基于单子微的FMCW lidar的范围分辨率限制.
    • 为了实现高级3D成像应用的高分辨率的大规模并行范围.

    主要方法:

    • 开发使用级联调节器EO频率的FMCW激光雷达系统.
    • 演示31通道系统与散装EO频和19通道系统与集成薄膜酸 (TFLN) EO频.
    • 通过对目标的3D成像来分析扫描带宽限制和性能评估.

    主要成果:

    • 每个频道的扫描带宽高达15GHz,可实现1厘米范围的分辨率.
    • 经验证的多通道FMCW激光雷达系统:31通道 (批量EO) 和19通道 (TFLNEO).

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  • 达到每秒超过12兆像素的测量速率,证实了大规模平行测距的可行性.

    • 结论:

    • 级联调节器EO频率可以显著提高FMCW激光雷达的能力,以实现大规模的平行测距.
    • 开发的系统提供高范围的分辨率和测量速率,适合苛刻的3D成像任务.
    • 这种方法有可能用于需要高分辨率3D成像的应用,包括刑事调查和精密加工.