Performing differential operation with a silver dendritic metasurface at visible wavelengths

• DOI: 10.1364/oe.25.026417
• Publication Date: 2017-10-16T14:57:17Z
• Authors: Huan Chen; Di An; Zhenchun Li; Xiaopeng Zhao
• Keywords: Visible spectrum

We design a reflective silver dendritic metasurface that can perform differential operation at visible wavelengths. The consists of an upper layer structures, silica spacer, and lower film. Simulation results show the realize in red, yellow, green bands. Such functionality is readily extended to infrared communication samples respond red bands are prepared by using electrochemical deposition method, their properties proved through tests. Silver metasurfaces conduct mathematical light pave way for realizing miniaturized, integratable all-optical information processing systems. Their differentiation functionality, which used real-time ultra-fast edge detection, image contrast enhancement, hidden object other practical applications, has great development potential.