Article
Chemistry, Multidisciplinary
Trevon Badloe, Junhwa Seong, Junsuk Rho
Summary: Metalenses have the potential to revolutionize optical devices by integrating multiple functionalities into a single flat device. In this study, we design metalenses that are sensitive to incident spin angular momentum and provide three distinct modes based on the handedness of the light. We experimentally demonstrate the use of these metalenses for spin-selective imaging of visible light and envision their application in chiral bioimaging, optical computing, and computer vision.
Article
Optics
Yang Liu, Jianhao Zhang, Xavier Le Roux, Eric Cassan, Delphine Marris-Morini, Laurent Vivien, Carlos Alonso-Ramos, Daniele Melati
Summary: Metalenses are a promising technology for implementing complex optical functionalities in planar and compact devices. This study investigates the broadband behavior of metalenses based on quadratic phase profiles. The results show that these metalenses have a large field of view and are tolerant to longitudinal and transverse chromatic aberrations. A single-layer silicon metalens with a field of view of 86 degrees and a bandwidth up to 140 nm operating at both 1300 nm and 1550 nm telecommunication wavelength bands is demonstrated.
Article
Optics
Fan Yang, Sensong An, Mikhail Y. Shalaginov, Hualiang Zhang, Clara Rivero-Baleine, Juejun Hu, Tian Gu
Summary: The direct search method adapted for metasurface optimization, paired with deep learning techniques for free-form meta-atom generation, provides computationally efficient approaches for metasurface optics. The optimized achromatic metalenses designed using this method exhibit superior broadband performances compared to traditional diffractive counterparts. Additionally, an achromatic and wide-field-of-view metalens design is demonstrated in the study.
Article
Optics
Ting Xie, Fei Zhang, Mingbo Pu, Hanlin Bao, Jinjin Jin, Jixiang Cai, Lianwei Chen, Yinghui Guo, Xingdong Feng, Qiong He, Xiaoliang Ma, Xiong Li, Baoshan Jiang, Xiangang Luo
Summary: Ultrathin metalenses are a revolutionary technology that can provide high-resolution, wide-angle imaging in a compact form factor. A novel methodology using a rear-position wavevector filter has been proposed to solve the problem of imaging aberrations and achieve the necessary thickness in subwavelength scale. This approach has shown significant improvement over traditional metalenses in terms of thickness-to-focal length ratio, field of view, system length, and imaging resolution.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Ting Xiao, Jie Zhao, Peng Sun, Peng Li, Yaokang Zhang, Ni Zhao, Zhiwei Ren, Gang Li, Zhifeng Huang, Zijian Zheng
Summary: The study introduces a new type of broadband-transmitting built-in TiO2 metalens that can enhance the sensitivity, speed, and efficiency of photodetectors.
Article
Optics
Hongtao Wang, Chenglong Hao, Han Lin, Yongtian Wang, Tian Lan, Chengwei Qiu, Baohua Jia
Summary: Graphene-based metalenses offer new opportunities for precisely controlling phase and amplitude modulations, leading to unprecedented possibilities in lens design and applications. The conversion of graphene oxide into graphene materials allows for simultaneous modulation at a single position, enabling the demonstration of ultra-long optical needles and axial multifocal spots in graphene oxide metalenses.
OPTO-ELECTRONIC ADVANCES
(2021)
Article
Physics, Applied
Zin Lin, Charles Roques-Carmes, Rasmus E. Christiansen, Marin Soljacic, Steven G. Johnson
Summary: This study presents a full-Maxwell topology-optimized design of a single-piece multilayer metalens that can simultaneously focus within a 60-degree angular range and a 23% spectral bandwidth without suffering chromatic or angular aberration. The design achieves diffraction-limited focusing and an absolute focusing efficiency of over 50% at all angles and frequencies, demonstrating ultra-compact multifunctionality. This paves the way for future work on design and fabrication of multilayer metaoptics.
APPLIED PHYSICS LETTERS
(2021)
Review
Nanoscience & Nanotechnology
XianGang Luo, Fei Zhang, MingBo Pu, YingHui Guo, Xiong Li, XiaoLiang Ma
Summary: This article reviews recent advances in wide-angle metalenses, including operation principles, design strategies, and application demos. The basic principles of wide-angle imaging using a single metalens are explained, advanced methods for designing subwavelength structures with high angle robustness and high efficiency are discussed, and representative functional devices and applications are surveyed.
Article
Chemistry, Multidisciplinary
Zhe Shen, Shijie Huang
Summary: This study demonstrates the generation and focusing of azimuthally polarized vortex beams using a single-layer all-dielectric metalens based on Pancharatnam-Berry (PB). By adding phase or amplitude modulation, optical needles with different depths of focus and sizes can be achieved. The results suggest potential applications of this technique in super-resolution imaging, photolithography, and particle trapping.
Article
Physics, Condensed Matter
Xiangang Luo, Fei Zhang, Mingbo Pu, Mingfeng Xu
Summary: Catenary optics is an emerging field in subwavelength optics that describes electric fields and dispersion properties of coupled metallic subwavelength structures and designs broadband high-efficiency geometric-phase metasurfaces. It has achieved various exotic phenomena and optical applications in recent years.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Optics
Yue Li, Xinlin Geng, Xianghong Kong, Xingsi Liu, Zhen Liu, Zheng Wang, Difei Liang, Qian Xie, Jianliang Xie, Longjiang Deng, Cheng-Wei Qiu, Bo Peng
Summary: This article reports a dynamic beam steering system with periodic grating nanostructures fabricated through nanoimprint lithography, achieving high-frequency, wide field of view control of light beams for efficient 3D space data acquisition, suitable for next-generation intelligent vision and self-driving technologies.
LASER & PHOTONICS REVIEWS
(2023)
Article
Materials Science, Multidisciplinary
Shuobo Wang, Yicong Chen, Jianjun Gao, Guohua Zhai, Jun Ding
Summary: This study proposes a method using single-layered-substrate meta-atoms to achieve independent phase manipulation and high transmission efficiency at two frequencies. By rotating the corresponding resonators, the full 2π phase coverage can be achieved. Simulation and experimental results demonstrate wide scanning coverages at both 20 and 30 GHz.
ADVANCED PHOTONICS RESEARCH
(2022)
Article
Physics, Multidisciplinary
Bingjie Li, Yujie Xin, Xuyue Guo, Xinhao Fan, Sheng Liu, Jianlin Zhao, Peng Li
Summary: This work demonstrates a robust construction of focal fields with laterally variant optical spin angular momentum using a monolayer dielectric metalens. The gradation of optical helicity in the line focus can induce a chirality-sensitive lateral force for chiral particles.
FRONTIERS IN PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Yuxing Chen, Caoyuan Wang, Limin Xiao
Summary: An effective approach to fabricating ultrathin lensed photonic crystal fibers (PCFs) with long working distances has been demonstrated in this study. The maximum working distance of lensed PCF has been analytically shown and experimentally optimized, achieving a significantly enhanced collimating working distance and ultrawide working bandwidth. The findings will accelerate various applications using such ultrathin lensed PCFs.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Tano Kim, Seung-ye Heo, Wan -Chin Kim, No-Cheol Park
Summary: This study confirmed the possibility of achieving a beam steering angle above 175 degrees through the biaxial movement of the objective lens, without the use of a relay optical system. It also verified the detection possibility of a signal from an object using the same light path as the beam steering optical path. A relay optics design was then proposed to reduce divergence angle and deviation in light transmission efficiency, resulting in improved performance. Finally, ray-tracing simulations were performed to verify the ability of the designed optics in properly detecting shape and object distance.
OPTICS AND LASER TECHNOLOGY
(2023)
