Optical computing of spatial differentiation without Fourier optics
Tengfeng Zhu, Yijie Lou, Yihan Zhou, Jiahao Zhang, Junyi Huang, Yan Li, Hailu Luo, Shuangchun Wen, Shiyao Zhu, Qihuang Gong, Hui Ye, Min Qiu, Shanhui Fan, Zhichao Ruan · Conference on Lasers and Electro-Optics · 2019
We propose optical analog computing of spatial differentiation with two new effects: the surface plasmon excitation and the spin Hall effect of light. Also we experimentally demonstrate their applications on edge-enhanced imaging.