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Flat optics with nanophotonic metasurface

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Abstract

Comprehensive light manipulation is highly desired in modem optics applications, such as LiDAR, augmented imaging system, and quantum technology. To tailor the light wavefront, the conventional optical components rely on the phase accumulation via the propagation length. It leads to the fact that the conventional optical components are physically bulky, but cannot simultaneously manage electromagnetic waves in different degrees of freedom either. Nanophotonic metasurfaces composed of artificial structures, enabling abrupt changes to the electromagnetic phase as well as amplitude within a subwavelength spatial region. Thus, they are very promising for the development of flat optics systems [1-3]. In this presentation, I will talk about unprecedented schemes with nanophotonic metasurfaces for optical modulation and related applications [4, 5], including broadband achromatic metalens (metasurface lens) for full-color imaging [6, 7] and active control of light properties in demand [8, 9].

© 2019 Japan Society of Applied Physics, The Optical Society (OSA)

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