Article
Crystallography
Tao Zhan, En-Lin Hsiang, Kun Li, Shin-Tson Wu
Summary: This research demonstrates a light efficient virtual reality near-eye display design based on a directional display panel and a diffractive deflection film, which significantly enhances light efficiency.
Article
Physics, Multidisciplinary
Ze-Guo Chen, Ruo-Yang Zhang, C. T. Chan, Guancong Ma
Summary: This study demonstrates the realization of non-Abelian braiding of multiple degenerate acoustic waveguide modes, exploring the dynamics and geometric phase variations. By switching the order of different braiding processes, the non-Abelian characteristics are revealed.
Article
Chemistry, Physical
Tianqi Zhao, Bo Fang, Wenkang Huang, Jianxun Lu, Yinglai Wu, Changyu Shen, Chenxia Li, Xufeng Jing
Summary: In this paper, we propose an all-dielectric encoded particle metasurface using the Pancharatnam-Berry phase principle for efficient and flexible manipulation of transmitted beams. We also introduce an error analysis theory for rectangular beams and provide a method to achieve standard beam.
SURFACES AND INTERFACES
(2022)
Article
Optics
Sheng Liu, Shuxia Qi, Peng Li, Bingyan Wei, Peng Chen, Wei Hu, Yi Zhang, Xuetao Gan, Peng Zhang, Yanqing Lu, Zhigang Chen, Jianlin Zhao
Summary: The study demonstrates an analog of optical activity in free space using a specially designed liquid crystal element, which can be revoked by another element with the same structure. By switching the orientation of the optical element, equivalent leverotation and dextorotation can be achieved simultaneously, promising potential applications in non-magnetic optical devices like optical isolators.
LASER & PHOTONICS REVIEWS
(2022)
Article
Engineering, Electrical & Electronic
Lin Wang, Yan Li, Shuxin Liu, Yikai Su, Dongdong Teng
Summary: To overcome the common issue of visual fatigue in AR displays caused by accommodation and convergence conflict, we propose a Maxwellian-viewing-super-multi-view (MV-SMV) near-eye display system based on a Pancharatnam-Berry optical element (PBOE). By using an array of high-efficiency polarization gratings, the PBOE can direct different views to different directions simultaneously, constructing a 3D light field. Experimental results show that the MV-SMV display can effectively present virtual images with correct accommodation depth cue within a large depth of field (DOF).
IEEE PHOTONICS JOURNAL
(2022)
Article
Physics, Multidisciplinary
Wenguo Zhu, Huadan Zheng, Yongchun Zhong, Jianhui Yu, Zhe Chen
Summary: This research demonstrates a novel wave-vector-varying PB phase that naturally arises in transmission and reflection processes for paraxial beams with small incident angles. This new photonic spin Hall effect can address the contradiction between spin separation and energy efficiency in the conventional PSHE.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Feiyan Zhao, Jiantao Lu, Hexiang He, Yangui Zhou, Shenhe Fu, Yongyao Li
Summary: Two rotation schemes, full-wedge rotation and half-wedge rotation, of the QPM parameters in the process of fully nonlinear three-wave mixing were studied. These two schemes can effectively suppress uncertainty in creating the geometric phase in the nonlinear frequency conversion process.
Article
Physics, Multidisciplinary
Jia-Yuan Zhang, Xia Yin, Ming-Yu Liu, Jize Zhao, Yang Ding, Jun Chang
Summary: We propose that universal anomalies near phase transitions may originate from geometric phase effects. In our multi-level quantum model, quantum interference induced by the geometric phase can alter the relaxation times of excited states at phase transition points. Furthermore, by introducing a phase shift of p, we can decouple the excited state from the ground state, extending the relaxation time of qubits for quantum computing.
Article
Materials Science, Multidisciplinary
Qingrong Deng, Jianing Yang, Xiang Lan, Wenting Zhang, Hengyu Cui, Zhengwei Xie, Ling Li, Yijia Huang
Summary: Pancharatnam-Berry (PB) phase, as one of the main approaches to implement phase gradient in metasurfaces, has attracted enormous interest. The recently proposed generalized PB phase, which indicates that phase gradient could be achieved by high-order symmetry metallic meta atoms, can also be implemented in all-dielectric metasurfaces with higher efficiency. Functional devices are designed by merging generalized PB phase and propagation phase, and a detailed comparison between meta atoms with different rotational symmetries is conducted to illustrate the difference between classical and generalized PB phase.
RESULTS IN PHYSICS
(2023)
Article
Optics
Quan Xu, Xiaoqiang Su, Xueqian Zhang, Lijuan Dong, Lifeng Liu, Yunlong Shi, Qiu Wang, Ming Kang, Andrea Alu
Summary: Metasurfaces have enabled the realization of optical functionalities on an ultrathin platform, driving the field of flat optics. Traditional metasurfaces have static meta-atoms, while reconfigurable and programmable metasurfaces offer customized functionality with individually reprogrammable meta-atoms.
ADVANCED PHOTONICS
(2022)
Article
Optics
Tianqi Zhao, Xufeng Jing, Xiaoyan Tang, Xun Bie, Tianzi Luo, Haiyong Gan, Yingwei He, Chenxia Li, Zhi Hong
Summary: The study introduces an encoding metasurface with a three-layer C-shaped unit cell structure, which controls transmission phase and deflection angle through rotation angles, and utilizes Fourier convolution theory for flexible control.
OPTICS AND LASERS IN ENGINEERING
(2021)
Article
Chemistry, Analytical
Ling Wang, Yang Yang, Feng Gao, Shuhua Teng, Jinggui Zhang, Li Deng, Weijun Hong, Zhuofang Li
Summary: This paper presents a strategy of using polarization-insensitive unit cells to manipulate incident waves with arbitrary circularly polarized and linearly polarized states. The proposed method is significant for designing microwave-transmissive metasurfaces capable of polarization insensitivity.
Article
Optics
Fuyong Yue, A. Aadhi, Riccardo Piccoli, Vincenzo Aglieri, Roberto Macaluso, Andrea Toma, Roberto Morandotti, Luca Razzari
Summary: Experimental evidence of a direct connection between high-order PB phase time evolution on the Poincare sphere and rotational Doppler frequency shift of light has been provided. This study demonstrates a new advanced way to engineer the frequency content of light through the use of a metasurface and TAM converters.
LASER & PHOTONICS REVIEWS
(2021)
Article
Crystallography
Ying Ma, Mingkui Yin, Yuhang Shan, Vladimir G. Chigrinov, Hoi-Sing Kwok, Jianlin Zhao
Summary: This study introduces a ferroelectric liquid crystal (FLC) compound lens based on the Pancharatnam-Berry (PB) phase, which integrates polarization grating and a PB lens to achieve rapid transmittance tunability. The FLC compound lenses can function as concave/convex lenses with spatially separated output light, and have potential applications in various displays and augmented reality.
Article
Quantum Science & Technology
Long Chen, Jian Wei You, Ze Gu, Qian Ma, Tie Jun Cui
Summary: This study develops an analog quantum bit based on Pancharatnam-Berry phase metasurfaces. It not only provides a theoretical foundation to go beyond the information limit of classical bits but also develops a feasible physics platform to investigate quantum information science.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Review
Crystallography
Kun Yin, Tao Zhan, Jianghao Xiong, Ziqian He, Shin-Tson Wu
Article
Multidisciplinary Sciences
Tao Zhan, Kun Yin, Jianghao Xiong, Ziqian He, Shin-Tson Wu
Article
Optics
Tiegang Lin, Tao Zhan, Junyu Zou, Fan Fan, Shin-Tson Wu
Article
Chemistry, Multidisciplinary
En-Lin Hsiang, Yannanqi Li, Ziqian He, Tao Zhan, Caicai Zhang, Yi-Fen Lan, Yajie Dong, Shin-Tson Wu
Article
Crystallography
Tao Zhan, En-Lin Hsiang, Kun Li, Shin-Tson Wu
Summary: This research demonstrates a light efficient virtual reality near-eye display design based on a directional display panel and a diffractive deflection film, which significantly enhances light efficiency.
Article
Optics
Yannanqi Li, Tao Zhan, Zhiyong Yang, Chi Xu, Patrick L. LiKamWa, Kun Li, Shin-Tson Wu
Summary: The designed planar and broadband cholesteric liquid crystal (CLC) lens hybridized with a refractive lens forms a catadioptric pancake lens for virtual reality (VR) displays. The chromatic aberration of the assembled pancake lens is dramatically suppressed due to the opposite optical dispersion behaviors, showing great potential for next-generation VR displays.
Article
Engineering, Electrical & Electronic
En-Lin Hsiang, Yannanqi Li, Ziqian He, Tao Zhan, Caicai Zhang, Yi-Fen Lan, Yajie Dong, Shin-Tson Wu
Summary: The study introduces a patterned cholesteric liquid crystal polymer film as a self-assembled Bragg reflector to enhance the performance of a color-converted micro-LED display system, doubling the optical efficiency by optimizing the device structure and integrating the CLC film while maintaining a wide color gamut of about 90% Rec. 2020.
JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY
(2021)
Article
Engineering, Electrical & Electronic
Zhiyong Yang, Tao Zhan, Shin-Tson Wu
Summary: This paper presents a polarization-independent refractive index sensor with a sensitivity of 50 nm/RIU, consisting of a liquid crystal polymeric polarization grating film and a glass substrate. The wavelength shift over the refractive index of the surrounding medium is investigated through anisotropic rigorous coupled-wave analysis. This LC-based sensor allows the use of unpolarized light source and exhibits high sensitivity, showing great potential for integration with display systems.
JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY
(2021)
Article
Optics
Junyu Zou, Tao Zhan, En-Lin Hsiang, Xinpeng Du, Xiaoming Yu, Kun Li, Shin-Tson Wu
Summary: The study demonstrates a method to double the optical efficiency of VR systems using a directional backlight and a diffractive deflection film, which has been successfully validated through experiments.
Review
Optics
Jianghao Xiong, En-Lin Hsiang, Ziqian He, Tao Zhan, Shin-Tson Wu
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
Optics
En-Lin Hsiang, Zhiyong Yang, Tao Zhan, Junyu Zou, Hajime Akimoto, Shin-Tson Wu
Summary: A systematic optimization method is proposed for OLED and LCD displays in VR headsets, improving display performance and efficiency through optimized microcavity structures and backlight units. Pros and cons of the optimized displays in VR systems are analyzed, proving the effectiveness of the optimization method.
Article
Optics
Zhiyong Yang, Tao Zhan, Shin-Tson Wu
Article
Optics
Jianghao Xiong, Guanjun Tan, Tao Zhan, Shin-Tson Wu
Article
Chemistry, Multidisciplinary
Juan He, Ziqian He, Andrew Towers, Tao Zhan, Hao Chen, Le Zhou, Caicai Zhang, Ran Chen, Ted Sun, Andre J. Gesquiere, Shin-Tson Wu, Yajie Dong
NANOSCALE ADVANCES
(2020)
Review
Optics
Tao Zhan, Jianghao Xiong, Junyu Zou, Shin-Tson Wu
