1. Super-Resolution Imaging via Angular Magnification
- Author
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Zhou, Yi, Liao, Dingpeng, Zhang, Kun, Ma, Zijie, Wu, Shikai, Ma, Jun, Dai, Xuemei, Shang, Zhengguo, Wen, Zhongquan, and Chen, Gang
- Subjects
Physics - Optics - 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.
- Published
- 2023