全光混合元面用于超快的计算光谱仪和单像素成像
Zijian Liao1,2, Zhanqiang Xue1,2, Junxing Fan1,2
1State Key Laboratory of Optical Fiber and Cable Manufacture Technology, Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China.
Nature communications
|December 13, 2025
概括
研究人员开发了一种活跃的混合超表面,用于超快的太赫兹 (THz) 光谱和成像. 这种新的方法克服了传统THz光谱仪的局限性,实现了紧和高分辨率的应用.
科学领域:
- 光学和光子学 在光学和光子学.
- 超材料是指一种超材料.
- 特拉赫兹技术的技术.
背景情况:
- 太赫兹 (THz) 频谱为传感和成像提供了潜力.
- 传统的THz光谱仪面临着由于机械元件的小型化,速度和成本方面的挑战.
研究的目的:
- 为THz计算光谱和单像素成像开发一个活跃的混合超表面.
- 为了克服传统THz光谱仪的局限性.
主要方法:
- 使用分散工程的超表面,在连续体中具有准束状态,用于密集的高Q共振.
- 采用集成贴片的全光学激发用于动态调制.
- 实施了临时调制的元表面,用于不连贯的单像素检测和光谱重建.
- 演示了用于THz单像素成像的像素化metasurface阵列.
主要成果:
- 在0.25THz带宽上实现了0.03 THz分辨率的纳秒级光谱重建.
- 证明了超快的THz单像素成像与3x3像素阵列.
- 超表面功能作为一个低相关性,超快的光谱/空间光调节器.
结论:
- 这种CMOS兼容的无电路策略可实现紧,高分辨率和超快的THz光谱和成像.
- 这种方法为下一代THz光子设备提供了一个可扩展的途径.
相关概念视频
Imaging Biological Samples with Optical Microscopy
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
Total Internal Reflection Fluorescence Microscopy
Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
Super-resolution Fluorescence Microscopy
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.
Electron Microscope Tomography and Single-particle Reconstruction
Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...


