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Article
Nanoscience & Nanotechnology
Xiangang Luo
Summary: Replacing curved and bulky optical elements with thin and lightweight counterparts is a persistent pursuit of the optical society. Metasurfaces, as two-dimensional artificial meta materials, have exceptional ability to manipulate electromagnetic waves. With the advances in planar digital optics and vector optical field manipulation via metasurfaces, planar optics with multiscale optical field manipulation is highly desired in practical applications.
Review
Quantum Science & Technology
Quan-Ming Chen et al.
Summary: This paper reviews the recent progress on the customizable working band of liquid crystal planar optics enabled by helical structures. It summarizes the development of broadband transmissive devices, broadband reflective Bragg-Berry phase elements, transflective phase modulations, and external field shifted bands of planar optics. In addition to customization of the geometric phase and working band, manipulation of other optical parameters is also discussed. The self-assemblies and external field responsiveness of liquid crystals make them a perfect platform for full-dimensional manipulation of light.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Optics
Kuixian Chen et al.
Summary: This paper introduces a method to extend liquid crystal devices into multifunctional devices by combining Pancharatnam-Berry phase with orientation-degeneracy implied in Malus's law, which enables separate manipulation of the amplitude and phase of incident light. Experimental results demonstrate that the proposed multifunctional LC device can display a grayscale pattern at the surface of LC, while simultaneously projecting an independent phase-only holographic image in the far-field. Furthermore, the spectral-response of the LC device can be modulated by tilting the LC directors with external applied voltages, providing a unique function of optical switch. Due to these unique characteristics of dual-manipulations and spectrum-tunability, the proposed multifunctional LC devices have promising prospects in information multiplexing, optical communications, spectral measurements, etc.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Dongliang Tang et al.
Summary: As a fundamental material in display technology, liquid crystal (LC) possesses excellent properties for the development of next-generation flat optical devices. Current LC elements lack flexibility due to their single functionality. This paper proposes flat LC elements that can simultaneously achieve near-field display and far-field holography. Experimental demonstrations of two-channel LC elements generating grayscale patterns and independent holographic images are presented. Position and spatial multiplexing methodologies are introduced to enhance the information capacity.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Lin Zhu et al.
Summary: This work proposes an innovative scheme based on opposite-chirality-coexisted superstructures to simultaneously modulate orthogonal circular polarization and achieve PB phase reversal. By refilling cholesteric liquid crystal into a washed-out polymer network with opposite chirality and delicate photo-patterned structures, specific optical phenomena can be efficiently generated.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Optics
Xinjian Lu et al.
Summary: This paper proposes a method to achieve broadband high-efficiency polarization-multiplexing using a geometric phase polymerized liquid crystal metasurface, allowing for polarization-switchable functionalities. By designing broadband high-efficiency polymerized liquid crystal metalenses, spin-controlled behavior is obtained and experimental results demonstrate stable and excellent optical performance. The low-cost polymerized liquid crystal metasurfaces enable large-scale patterning and have unrivalled advantages in terms of low waveguide absorption.
PHOTONICS RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Chun-Ting Xu et al.
Summary: This study demonstrates broadband tunable planar optics by electrically driving the nanohelix of photopatterned heliconical cholesterics. It allows arbitrary encoding of spatial geometric phases and precise selection of the reflective Bragg band. Additional functionalities like spatial amplitude modulation and spin reversion can also be expected. This offers a platform for full-dimensional manipulation of light and upgrades optical information processing techniques.
ADVANCED OPTICAL MATERIALS
(2022)
Review
Optics
Chao Zeng et al.
Summary: Graphene, with its dynamic tunability, has enabled the development of dynamic metasurfaces and metadevices. This review highlights the recent progress in graphene-empowered dynamic manipulation of electromagnetic waves, including dynamic spectrum manipulation, wavefront shaping, polarization control, and frequency conversion. The remaining challenges and potential future developments are also discussed.
OPTO-ELECTRONIC ADVANCES
(2022)
Article
Optics
Shuai Wang et al.
Summary: This study presents an effective strategy for designing full Poincare sphere polarizers and implements it in a monolayer all-dielectric metasurface. By leveraging this strategy, it allows the transmission and conversion of polarization states located at arbitrary positions on the Poincare sphere, with high experimental efficiency.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Review
Optics
Jianghao Xiong et al.
Summary: With advancements in technology, AR and VR have become the next-generation display platforms, but unprecedented challenges in optical engineering require the use of holographic optical elements and lithography-enabled devices. These devices improve the performance of AR and VR, opening up new possibilities for future displays.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Physics, Multidisciplinary
Xin Xie et al.
Summary: Research has shown that high-order geometric phases can be achieved by meta-atoms with high fold rotational symmetries. Experimental results have demonstrated the broadband angular spin Hall effect of light and optical vortices, providing a new understanding of the geometric phase and light-matter interaction in nanophotonics.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Zi-Lan Deng et al.
Summary: Malus' law serves as the foundation for image steganography based on orthogonal polarizations of light, but introducing a vectorial compound metapixel design allows for arbitrary nonorthogonal polarization multiplexing of independent grayscale images with high fidelity and strong concealment. This new approach sheds light on metaoptics and unlocks the full potential of metasurface polarization optics.
ADVANCED MATERIALS
(2021)
Review
Optics
Chandroth Pannian Jisha et al.
Summary: Geometric phase, with optics playing a key role, especially in the introduction of the Pancharatnam-Berry phase related to light polarization, offers exotic properties. Applications of this concept in photonics, such as phase modulation in anisotropic materials, are discussed along with the generation of a new optical waveguide using geometric phase without the need for index gradients.
LASER & PHOTONICS REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Peng Chen et al.
ADVANCED MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Deng Juan et al.
Article
Optics
Liangui Deng et al.
LIGHT-SCIENCE & APPLICATIONS
(2020)
Article
Optics
Bingyan Wei et al.
Article
Optics
Yingjie Zhou et al.
Review
Optics
Yuebian Zhang et al.
OPTO-ELECTRONIC ADVANCES
(2020)
Article
Chemistry, Multidisciplinary
Miao Jiang et al.
ADVANCED MATERIALS
(2019)
Review
Physics, Applied
Eliahu Cohen et al.
NATURE REVIEWS PHYSICS
(2019)
Article
Optics
Fuyong Yue et al.
LIGHT-SCIENCE & APPLICATIONS
(2018)
Article
Optics
Hernando Magallanes et al.
Article
Optics
Tao Zhan et al.
Review
Materials Science, Multidisciplinary
Dandan Wen et al.
ADVANCED OPTICAL MATERIALS
(2018)
Article
Chemistry, Multidisciplinary
Xiaohu Zhang et al.
Article
Optics
Ziqian He et al.
Article
Optics
Wiebke Freese et al.
