Nonlinear All-Optical Diffractive Deep Neural Network with 10.6 μm Wavelength for Image Classification. - Sun, Yichen; Dong, Mingli; Yu, Mingxin; Xia, Jiabin; Zhang, Xu; Bai, Yuchen; Lu, Lidan; Zhu, Lianqing (International Journal of Optics, 2021)