Chirality Invertible Superstructure Mediated Active Planar Optics

Overview

Journal Nat Commun

Specialty Biology

Date 2019 Jun 9

PMID 31175286

Citations 16

Authors

Peng Chen

Ling-Ling Ma

Wei Hu

Zhi-Xiong Shen

Hari Krishna Bisoyi

Sai-Bo Wu

Shi-Jun Ge

Quan Li

Yan-Qing Lu

Affiliations

Soon will be listed here.

Abstract

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 from static functions. Here, we introduce an inhomogeneously self-organized anisotropic medium featured by photo-invertible chiral superstructure to realize geometric phase elements with continuously tunable working spectrum and light-flipped phase profile. Via preprograming the alignment of a cholesteric liquid crystal mixed with a photo-responsive chiral dopant, we demonstrate light-activated deflector, lens, Airy beam and optical vortex generators. Their polychromatic working bands are reversibly tuned in an ultra-broadband over 1000 nm covering green to telecomm region. The chirality inversion triggers facile switching of functionalities, such as beam steering, focusing/defocusing and spin-to-orbital angular momentum conversion. This work offers a platform for advanced adaptive and multifunctional flat optics with merits of high compactness, low loss and broad bandwidth.

Citing Articles

Chiral structural color from microdomes.

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Dynamic propagation of an Airy beam in metasurface-enabled gradiently-aligned liquid crystals.

Gao M, Wang J, Cai W, Cheng M, Hao X, Wang Y Nanophotonics. 2024; 12(22):4205-4214.

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Fast selective edge-enhanced imaging with topological chiral lamellar superstructures.

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Chirality tuning and reversing with resonant phase-change metasurfaces.

Sha X, Du K, Zeng Y, Lai F, Yin J, Zhang H Sci Adv. 2024; 10(21):eadn9017.

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