Advanced Photonics, Volume. 7, Issue 4, 046006(2025)
High-resolution and wide-field microscopic imaging with a monolithic meta-doublet under annular illumination
Fig. 1. Schematic of the meta-microscope based on metalens doublet and annular illumination. The optimized doublet enlarges the FOV and the annular illumination improves the resolution. Inset is the implemented meta-microscope prototype in a very compact form.
Fig. 2. Optical design of the metalens doublet. (a) Ray tracing simulation schematic diagram of the metalens doublet of
Fig. 3. Characterization of the metalens doublet. (a) Phase and transmittance of meta-atoms with 12 different structural parameters, simulated by FDTD solutions. The sizes (in nanometers) of the nano-fins are marked along the phase distribution line. (b) Schematic of a single unit cell, the width and length of the nano fins are 90 nm and 230 nm, respectively. (c) Optical and top-view scanning electron microscope (SEM) images of the fabricated
Fig. 4. Microscopic imaging performance. (a) Image of the whole FOV captured by the CMOS. Scale bar is
Fig. 5. Meta-microscope prototype and its application in bio-diagnostics. (a) Photographic image of the meta-microscope prototype, along with the optical and top-view SEM images of the fabricated illumination metasurface. Scale bar is
Fig. 6. Parameters and performance of some meta-based microscopes reported.
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Jiacheng Sun, Wenjing Shen, Junyi Wang, Rongtao Yu, Jian Li, Chunyu Huang, Xin Ye, Zhaoyu Cheng, Jiefu Yu, Peng Wang, Chen Chen, Shining Zhu, Tao Li, "High-resolution and wide-field microscopic imaging with a monolithic meta-doublet under annular illumination," Adv. Photon. 7, 046006 (2025)
Category: Research Articles
Received: Feb. 11, 2025
Accepted: Apr. 28, 2025
Posted: Apr. 28, 2025
Published Online: May. 28, 2025
The Author Email: Chen Chen (chenchen2021@nju.edu.cn), Tao Li (taoli@nju.edu.cn)