Chirality invertible superstructure mediated active planar optics.
作者： Peng Chen , Ling-Ling Ma , Wei Hu , Zhi-Xiong Shen , Hari Krishna Bisoyi
DOI: 10.1038/S41467-019-10538-W
关键词:
摘要: Active planar optical devices that can dynamically manipulate light are highly sought after in modern optics and nanophotonics. The geometric phase derived from the photonic spin-orbit interaction provides an integrated strategy. Corresponding elements usually suffer static functions. Here, we introduce inhomogeneously self-organized anisotropic medium featured by photo-invertible chiral superstructure to realize with continuously tunable working spectrum light-flipped profile. Via preprograming alignment of a cholesteric liquid crystal mixed photo-responsive dopant, demonstrate light-activated deflector, lens, Airy beam vortex generators. Their polychromatic bands reversibly tuned ultra-broadband over 1000 nm covering green telecomm region. chirality inversion triggers facile switching functionalities, such as steering, focusing/defocusing spin-to-orbital angular momentum conversion. This work offers platform for advanced adaptive multifunctional flat merits high compactness, low loss broad bandwidth. Optically reconfigurable demand future applications. authors report on use chirality-invertible crystals actively create switchable perform variety
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