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飞机扫描太赫兹多平面无镜头成像与压抑的连贯噪声

Qiang Yan, Weipeng Kong, Guangbin Li

|January 29, 2025

概括

这项研究引入了一种新的flyscan terahertz (THz) 成像技术,以克服无镜头成像中的噪音和工件. 该方法实现了低波长分辨率,用于高质量,快速的复杂值THz成像,并证明了生物医学应用.

科学领域:

光学和光子学在光学和光子学.
特拉赫兹 (THz) 图像成像
生物医学成像技术生物医学成像技术

背景情况:

连贯的无镜头成像面临着连贯噪声和双图像文物带来的挑战.
在太赫兹 (THz) 范围内,噪声包括寄生干扰边缘和边缘衍射.
现有的方法在噪声抑制和在THz频率实现高分辨率成像方面扎.

研究的目的:

开发一种新的无镜头成像技术,用于高质量,快速,复杂值的THz成像.
在THz成像中抑制Fabry-Pérot (F-P) 干扰边缘和边缘衍射.
为了实现潜在的生物医学应用的THz成像中亚波长分辨率.

主要方法:

建议采用一个flyscan THz多平面无透镜成像技术.
在轴移上平均衍射模式可以抑制FP干扰边缘.
规范化解决了边缘衍射和不均的照明;多平面配置解决了双图像工件.
图像重建使用多平面交替投影和总变化规范化算法进行了精细化.

主要成果:

该技术实现了亚波长分辨率 (88μm在2.52 THz).
展示了高质量,全场和快速复杂值的THz成像.
成功成像小鼠大脑组织展示了生物医学潜力.

结论:

拟议的flyscan THz多平面无镜头成像技术有效地抑制了连贯的噪音和文物.
该方法可以实现高分辨率,快速的THz成像,并有可能用于生物医学应用.
精细的重建算法进一步提高了图像质量和分辨率.

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