Super-Resolution Imaging via Angular Magnification
Abstract
The far-field resolution of optical imaging systems is restricted by the Abbe diffraction limit, a direct result of the wave nature of light. One successful technological approach to circumventing this limit is to reduce the effective size of a point-spread-function. In the past decades, great endeavors have been made to engineer an effective point-spread-function by exploiting different mechanisms, including optical nonlinearities and structured light illumination. However, these methods are hard to be applied to objects in a far distance. Here, we propose a new way to achieve super-resolution in a far field by utilizing angular magnification. We present the first proof-of-concept demonstration of such an idea and demonstrate a new class of lenses with angular magnification for far-field super-resolution imaging. Both theoretical and experimental results demonstrate a more than two-fold enhancement beyond the angular-resolution limit in the far-field imaging. The proposed approach can be applied to super-resolution imaging of objects in far distance. It has promising potential applications in super-resolution telescopes and remote sensing.
Cite
@article{arxiv.2305.10011,
title = {Super-Resolution Imaging via Angular Magnification},
author = {Yi Zhou and Dingpeng Liao and Kun Zhang and Zijie Ma and Shikai Wu and Jun Ma and Xuemei Dai and Zhengguo Shang and Zhongquan Wen and Gang Chen},
journal= {arXiv preprint arXiv:2305.10011},
year = {2023}
}