Analog computing using reflective plasmonic metasurfaces.
作者： Anders Pors , Michael G. Nielsen , Sergey I. Bozhevolnyi
DOI: 10.1021/NL5047297
关键词: Materials science 、 Phase (waves) 、 Optoelectronics 、 Analog computer 、 Wavelength 、 Metamaterial 、 Optics 、 Plasmon 、 Differentiator 、 Realization (systems) 、 Integrator
摘要: Motivated by the recent renewed interest in compact analog computing using light and metasurfaces ( Silva, A. et al. Science 2014 , 343, 160 - 163), we suggest a practical approach to its realization that involves reflective consisting of arrayed gold nanobricks atop subwavelength-thin dielectric spacer optically thick film, configuration supports gap-surface plasmon resonances. Using well-established numerical routines, demonstrate these enable independent control phase amplitude, design differentiator integrator featuring realistic system parameters. Proof-of-principle experiments are reported along with successful high-quality poor-man's metasurface operating at wavelength 800 nm.
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