Design of Topological Nanocavity (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Design of Topological Nanocavity

Caption

a, Scanning electron microscopy image of a fabricated 2D topological photonic crystal cavity in a square shape. The inset on the right shows an enlarged image around the corner. The scale bar is 1 μm. The topological nanocavity consists of two topologically distinct photonic crystals, which are indicated by the red and blue areas. They have different unit cells, as shown in the insets. d and D are the lengths of the squares in the blue and red unit cells, in which D = 2d. b, Electric field profile of the topological corner state.

Credit

by Weixuan Zhang, Xin Xie, Huiming Hao, Jianchen Dang, Shan Xiao, Shushu Shi, Haiqiao Ni, Zhichuan Niu, Can Wang, Kuijuan Jin, Xiangdong Zhang and Xiulai Xu

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