Add to BibSonomy
Abstract
The development of super-oscillatory lens (SOL) offers opportunities to realize far-field label-free super-resolution microscopy. Most microscopes based on a high numerical aperture (NA) SOL operate in the point-by-point scanning mode, resulting in a slow imaging speed. Here, we propose a high-NA metalens operating in the single-shot wide-field mode to achieve real-time super-resolution imaging. An optimization model based on the exhaustion algorithm and angular spectrum (AS) theory is developed for metalens design. We numerically demonstrate that the optimized metalens with an NA of 0.8 realizes the imaging resolution (imaging pixel size) about 0.85 times the Rayleigh criterion. The metalens can achieve super-resolution imaging of an object with over 200 pixels, which is one order of magnitude higher than the unoptimized metalens. Our method provides an avenue toward single-shot far-field label-free super-resolution imaging for applications such as real-time imaging of living cells and temporally moving particles.
© 2024 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Lianhong Dong, Weijie Kong, Fei Zhang, Ling Liu, Mingbo Pu, Changtao Wang, Xiong Li, Xiaoliang Ma, and Xiangang Luo
Opt. Lett. 49(5) 1189-1192 (2024)
Yong-Qiang Liu, Jinhai Sun, Yongxing Che, Kainan Qi, Liangsheng Li, and Hongcheng Yin
Opt. Lett. 45(22) 6262-6265 (2020)
Xinyu Li, Zhengxin Wang, Huiqi Jiang, Minghui Deng, Lesiqi Yin, Cheng Gong, and Weiwei Liu
Opt. Lett. 49(5) 1261-1264 (2024)