Bi‐Chiral Nanostructures Featuring Dynamic Optical Rotatory Dispersion for Polychromatic Light Multiplexing DOI

Si‐Jia Liu,

Lin Zhu,

Yi‐Heng Zhang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(33)

Published: May 10, 2023

Abstract Chiral nanostructures featuring the unique optical activity have attracted broad interests from scientists. The typical polarization rotation of transmitted light is usually wavelength dependent, namely rotatory dispersion. However, its dynamic tunability and intriguing collaboration with other degrees freedom, especially highly desired spatial phase, remain elusive. Herein, a bi‐chiral liquid crystalline nanostructure proposed to induce an effect called reflective Thanks independent manipulation opposite‐handed self‐assembled helices, spin‐decoupled geometric phases are induced simultaneously. These naturally unite multi‐dimensions versatile stimuli‐responsiveness soft matter. Dynamic holography driven by heat electric field demonstrated fast response. For polychromatic light, hybrid multiplexed holographic painting exhibited fruitful tunable colors. This study extends ingenious construction chiral superstructures, presents open‐ended strategy for on‐demand control, enlightens advanced applications display, computing, communication.

Language: Английский

Advanced liquid crystal devices for augmented reality and virtual reality displays: principles and applications DOI Creative Commons
Kun Yin,

En‐Lin Hsiang,

Junyu Zou

et al.

Light Science & Applications, Journal Year: 2022, Volume and Issue: 11(1)

Published: May 30, 2022

Liquid crystal displays (LCDs) and photonic devices play a pivotal role to augmented reality (AR) virtual (VR). The recently emerging high-dynamic-range (HDR) mini-LED backlit LCDs significantly boost the image quality brightness reduce power consumption for VR displays. Such light engine is particularly attractive compensating optical loss of pancake structure achieve compact lightweight headsets. On other hand, high-resolution-density, high-brightness liquid-crystal-on-silicon (LCoS) promising source see-through AR displays, especially under high ambient lighting conditions. Meanwhile, high-speed LCoS spatial modulators open new door holographic focal surface Finally, ultrathin planar diffractive LC elements, such as geometric phase grating lens, have found useful applications in enhancing resolution, widening field-of-view, suppressing chromatic aberrations, creating multiplanes overcome vergence-accommodation conflict, dynamic pupil steering gaze-matched Maxwellian just name few. operation principles, potential applications, future challenges these advanced will be discussed.

Language: Английский

Citations

307
Intelligent optoelectronic processor for orbital angular momentum spectrum measurement DOI Creative Commons
Hao Wang,

Ziyu Zhan,

Futai Hu

et al.

PhotoniX, Journal Year: 2023, Volume and Issue: 4(1)

Published: Feb. 13, 2023

Abstract Orbital angular momentum (OAM) detection underpins almost all aspects of vortex beams’ advances such as communication and quantum analogy. Conventional schemes are frustrated by low speed, complicated system, limited range. Here, we devise an intelligent processor composed photonic electronic neurons for OAM spectrum measurement in a fast, accurate direct manner. Specifically, optical layers extract invisible topological charge information from incoming light shallow layer predicts the exact spectrum. The integration optical-computing promises us compact single-shot system with high speed energy efficiency (optical operations / ~ $${10}^{3}$$ 103 ), neither necessitating reference wave nor repetitive steps. Importantly, our is endowed salient generalization ability robustness against diverse structured adverse effects (mean squared error $$10^{(-5)}$$ xmlns:mml="http://www.w3.org/1998/Math/MathML">10(-5) ). We further raise universal model interpretation paradigm to reveal underlying physical mechanisms hybrid processor, distinct conventional ‘black-box’ networks. Such algorithm can improve up 25-fold. also complete theory optoelectronic network enabling its efficient training. This work not only contributes explorations on physics applications, broadly inspires advanced links between computing effects.

Language: Английский

Citations

58
Achromatic diffractive liquid-crystal optics for virtual reality displays DOI Creative Commons

Zhenyi Luo,

Yannanqi Li,

John Semmen

et al.

Light Science & Applications, Journal Year: 2023, Volume and Issue: 12(1)

Published: Sept. 15, 2023

Diffractive liquid-crystal optics is a promising optical element for virtual reality (VR) and mixed as it provides an ultrathin formfactor lightweight human factors ergonomics. However, its severe chromatic aberrations impose big challenge full-color display applications. In this study, we demonstrate achromatic diffractive device to overcome longstanding aberration issue. The proposed consists of three stacked liquid crystal elements with specifically designed spectral response polarization selectivity. concept validated by both simulations experiments. Our experimental results show significant improvement in imaging performance two types light engines: laser projector organic light-emitting diode panel. addition, our simulation indicate that the lateral color shift reduced ~100 times comparison conventional broadband lens. Potential applications VR-enabled metaverse, spatial computing, digital twins have found widespread smart tourism, education, healthcare, manufacturing, construction are foreseeable.

Language: Английский

Citations

58
Metasurface-empowered optical cryptography DOI
Hui Yang, Kai Ou, Hengyi Wan

et al.

Materials Today, Journal Year: 2023, Volume and Issue: 67, P. 424 - 445

Published: July 1, 2023

Language: Английский

Citations

48
Dynamic Hyperspectral Holography Enabled by Inverse‐Designed Metasurfaces with Oblique Helicoidal Cholesterics DOI Creative Commons
Joohoon Kim, Jun‐Hyung Im, Sunae So

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(24)

Published: March 8, 2024

Metasurfaces are flat arrays of nanostructures that allow exquisite control phase and amplitude incident light. Although metasurfaces offer new active element for both fundamental science applications, the challenge still remains to overcome their low information capacity passive nature. Here, by integrating an inverse-designed-metasurface with oblique helicoidal cholesteric liquid crystal (Ch

Language: Английский

Citations

39
Multiple degrees‐of‐freedom programmable soft‐matter‐photonics: Configuration, manipulation, and advanced applications DOI

Yuxian Zhang,

Zhigang Zheng, Quan Li

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(1)

Published: Feb. 1, 2024

Abstract For centuries, humans have never stopped exploring the nature of light and manipulating it, since carries multiple information through its intrinsic wave‐particle dualism, including wavelength, amplitude, phase, polarization, spin/orbital angular momentum, etc., which determines physical language basic manners we perceive objective world. Conventional optical devices, such as lenses, prisms, lasers, are composed solid elements that bulky, making it difficult to manipulate dynamically with degrees‐of‐freedom. Comparatively, some responsive soft matters, especially represented by liquid crystals (LCs), possess distinctive orientational order spontaneous self‐assembled superstructures, enabling digital programming microstructures degrees‐of‐freedom manipulation their characteristics. The based on these is, “soft‐matter‐photonics”, is playing an impressive role in integrated functional present age explosion. Herein, review latest advances, respectively, microstructure configurations, manipulations, relevant prospective applications. Additionally, scientific issues technical challenges hinder programing operation manipulations discussed. Toward a four‐dimensional condensed matter, this may wide implications variety applications, fabrication compact elements, multi‐channel processing high‐capacity communications.

Language: Английский

Citations

25
Liquid Crystal Elastomers for Actuation: A Perspective on Structure-Property-Function Relation DOI Creative Commons
Zhi‐Chao Jiang, Qing Liu, Yao‐Yu Xiao

et al.

Progress in Polymer Science, Journal Year: 2024, Volume and Issue: 153, P. 101829 - 101829

Published: May 10, 2024

Liquid crystal elastomers (LCEs) have long held significant promise as materials for artificial muscles and smart actuators. Recent advancements in this field introduced innovative LCE structures at various scales, resulting novel properties functionalities that further accentuate their actuation advantages, bolstering potential future soft systems. The ongoing pursuit of enhanced performance functionality actuators, essential advancing them towards superior material-based machines devices, is intricately linked to the understanding fundamental structure-property-function relationships. This review provides a perspective on these relationships across multiple structural levels, encompassing chemical structures, mesophase micro-to-macroscale programmed structures. It delves into impact key actuation-related properties, features, functionalities. aspires provide valuable insights design high-performance development exceptional modes behaviors, expansion achievable functionality.

Language: Английский

Citations

22
Multi-dimensional multiplexing optical secret sharing framework with cascaded liquid crystal holograms DOI Creative Commons
Keyao Li, Yiming Wang, Dapu Pi

et al.

Opto-Electronic Advances, Journal Year: 2024, Volume and Issue: 7(1), P. 230121 - 230121

Published: Jan. 1, 2024

Secret sharing is a promising technology for information encryption by splitting the secret into different shares. However, traditional scheme suffers from leakage in decryption process since amount of available channels limited. Herein, we propose and demonstrate an optical framework based on multi-dimensional multiplexing liquid crystal (LC) holograms. The LC holograms are used as spatially separated shares to carry images. polarization incident light distance between served keys, which can significantly improve security capacity. Besides, condition also restricted applied external voltage due variant diffraction efficiency, further increases security. In implementation, artificial neural network (ANN) model developed carefully design phase distribution each hologram. With advantage high security, capacity simple configuration, our has great potentials dynamic holographic display.

Language: Английский

Citations

18
Electrically tunable optical metasurfaces DOI Creative Commons
Fei Ding, Chao Meng, Sergey I. Bozhevolnyi

et al.

Photonics Insights, Journal Year: 2024, Volume and Issue: 3(3), P. R07 - R07

Published: Jan. 1, 2024

Citations

18
High-efficiency RGB achromatic liquid crystal diffractive optical elements DOI Creative Commons

Yuqiang Ding,

Xiaojin Huang,

Yongziyan Ma

et al.

Opto-Electronic Advances, Journal Year: 2025, Volume and Issue: 0(0), P. 240181 - 240181

Published: Jan. 1, 2025

Liquid crystal Pacharatnam-Berry phase optical elements (PBOEs) have found promising applications in augmented reality and virtual because of their slim formfactor, lightweight, high efficiency. However, chromatic aberration remains a serious longstanding problem for diffractive optics, hindering broader adoption. To overcome the aberrations red, green blue (RGB) light sources, this paper, we propose counterintuitive multi-twist structure to achieve narrowband PBOEs without crosstalk, which plays vital role eliminate aberration. The performance our designed fabricated lenses (PBLs) aligns well with simulation results. Furthermore, feasibility demonstration experiment using laser projector, proposed PBL system indeed exhibits diminished as compared broadband PBL. Additionally, polarization raytracing is implemented demonstrate versatility designing any RGB wavelengths contrast ratios. This analysis explores lines quantum dot light-emitting diodes. Overall, approach enables efficiency, low fabrication complexity, degree design freedom accommodate liquid material holding immense potential widespread achromatic PBOEs.

Language: Английский

Citations

3