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arXiv · 2305.10011

Super-Resolution Imaging via Angular Magnification

Yi Zhou·Dingpeng Liao·Kun Zhang·Zijie Ma·Shikai Wu·Jun Ma·Xuemei Dai·Zhengguo Shang·Zhongquan Wen·Gang Chen
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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.

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Yi Zhou, Dingpeng Liao, Kun Zhang, Zijie Ma, Shikai Wu, Jun Ma, Xuemei Dai, Zhengguo Shang, Zhongquan Wen, Gang Chen. 2023-05-17. Super-Resolution Imaging via Angular Magnification. https://arxiv.org/abs/2305.10011

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