Article
Optics
Yuxiang Wang, Yueyi Yuan, Yi Liu, Xumin Ding, Badreddine Ratni, Qun Wu, Shash Nawaz Burokur, Guangwei Hu, Kuang Zhang
Summary: Fourier harmonic component engineering is proposed to allocate energy between multiple diffraction beams, achieving lossless transformation from incidence to far-field patterns with high efficiency. This method is significant for multichannel wireless communication applications and can be easily extended to other frequency regions.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Yuhang Sun, Yumin Liu, Tiesheng Wu, Jun Wu, Yu Wang, Jing Li, Han Ye
Summary: The research demonstrates that by modulating phase changes at the interface, efficient broadband polarization-independent metasurfaces can be achieved for polarization conversion and anomalous reflection. This new type of metasurface can cover the full 2p phase range of cross-polarized light and achieve high-purity anomalous cross-polarization efficiency in a specific wavelength range.
Article
Optics
Peter Tillmann, Benedikt Blaesi, Sven Burger, Martin Hammerschmidt, Oliver Hoehn, Christiane Becker, Klaus Jaeger
Summary: This work presents optical simulations of III-V-on-silicon solar cells with a metal grating for improved light trapping efficiency. The study demonstrates that the period of the grating is a critical parameter affecting its performance, which can be highly controlled during manufacturing using inference lithography. The results suggest a pathway to exceed the current world record efficiency of the III-V-on-silicon solar cell technology.
Article
Optics
Xiaoran Zheng, Jiaqi Yang, Runqiu Wang, Tian Lan
Summary: This study comprehensively investigates an all-dielectric metasurface-based Dammann grating, which demonstrates high efficiency, wide waveband performance, and polarization insensitivity. It holds potential for various applications including laser technology and optical information processing.
Article
Physics, Applied
Ataollah Kalantari Osgouei, Amir Ghobadi, Bahram Khalichi, Rana Asgari Sabet, Onur Tokel, Ekmel Ozbay
Summary: This article investigates semiconductor-based sub-wavelength metasurfaces for photodetectors and demonstrates the design of a tunable color filter and an adaptive photodetector. Different optical states can be achieved by changing the incident light polarization and the phase transitions of the phase change material.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Ziquan Xu, Hao Luo, Huanzheng Zhu, Yu Hong, Weidong Shen, Jianping Ding, Sandeep Kaur, Pintu Ghosh, Min Qiu, Qiang Li
Summary: This study demonstrates a nonvolatile optically reconfigurable mid-infrared coding radiative metasurface, which allows for switching peak spectral emissivity values between low and high through laser pulses. Additionally, visible scattering patterns can be independently modulated, showing potential applications in anti-counterfeiting labels and other fields.
Article
Engineering, Electrical & Electronic
Fu Liu, Do-Hoon Kwon, Sergei Tretyakov
Summary: Reconfigurable reflectors have great potential in future telecommunication systems, and there is active research on designing and realizing full and tunable reflection control. Reflectarrays, the classical approach to scanning reflectors, are based on phased-array theory and physical optics approximation. To overcome the limitations, researchers are actively studying inhomogeneous metasurfaces using diffraction grating theory. Unifying these two approaches and studying reconfigurable reflectors from a unified point of view is necessary for achieving tunability and realizing their full potential.
IEEE ANTENNAS AND PROPAGATION MAGAZINE
(2023)
Article
Optics
T. Afra, M. R. Salehi, E. Abiri
Summary: The study proposes two methods to design compact head mount display systems using metasurface gratings, achieving large horizontal field of view in one method and designing a binocular HMD system in another method.
Article
Optics
Guoxing Zheng, Nan Zhou, Liangui Deng, Gongfa Li, Jin Tao, Zile Li
Summary: A dielectric metasurface is demonstrated to project two independent holographic images in transmission and reflection spaces simultaneously, expanding the field-of-view of metasurface holography. The metasurface uses two types of dielectric nanobricks for geometric phase modulation, enabling full-space meta-holography with a single-layer design approach, showing potential in optical sensing, image displays, and optical storages.
Article
Optics
Xuhao Luo, Yueqiang Hu, Xiangnian Ou, Xin Li, Jiajie Lai, Na Liu, Xinbin Cheng, Anlian Pan, Huigao Duan
Summary: Replacing electrons with photons is a promising approach for high-speed, massively parallel, and low-power artificial intelligence computing. Researchers have demonstrated a multiskilled diffractive neural network based on a metasurface device, capable of on-chip multi-channel sensing and multitasking.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Qiuyu Zhang, Dingquan Liu, Junli Su, Sheng Zhou, Yuanyuan Kong, Haihan Luo, Lingshan Gao, Yunbo Xiong, Weibo Duan
Summary: In this paper, we propose a polarization-independent metasurface-based Dammann grating that can redistribute collimated light into high-efficiency wide-angle spot arrays with desired intensity distributions. By combining a hybrid optimization algorithm with the finite-difference time-domain method, we optimize the metasurfaces to achieve effective control over power distributions among desired diffraction orders. The proposed gratings show high diffraction performance and have potential applications in optical information processing, beam shaping, and depth detection.
RESULTS IN PHYSICS
(2023)
Article
Physics, Applied
Md Mamunur Rashid, Andreas E. Olk, Haroldo T. Hattori, David A. Powell
Summary: The study introduces a deeply subwavelength metamaterial unit cell based on the coupling of dipole and quadrupole resonances, achieving complete phase coverage and high reflection magnitude. Numerical simulations show high efficiency anomalous reflection at 45 degrees angle and a structure with a lower reflection angle of 25 degrees. The design can be used in various applications such as beam forming and scanning antennas, reflectarray antennas, phase shifters, and beam splitters.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Multidisciplinary Sciences
Haofeng Zang, Zheng Xi, Zhiyu Zhang, Yonghua Lu, Pei Wang
Summary: This research demonstrates the first prototype polarization-encoded metasurface for ultrasensitive long-range transverse displacement metrology, achieving nanometer displacement resolution and a measurement range of 200 micrometers.
Article
Multidisciplinary Sciences
Hyunpil Boo, Yoo Seung Lee, Hangbo Yang, Brian Matthews, Tom G. Lee, Chee Wei Wong
Summary: Researchers report a platform solution to overcome the limitations of augmented reality devices, utilizing metasurface optical elements to achieve high resolution and a larger field of view. The new device also addresses issues such as visual fatigue and eye strain through focal-free implementation.
SCIENTIFIC REPORTS
(2022)
Article
Optics
Ziheng Qian, Shengnan Tian, Wei Zhou, Junwei Wang, Hanming Guo, Songlin Zhuang
Summary: In this study, an all-dielectric polarization-modulated broadband achromatic bifunctional metalens (BABM) is proposed, which achieves bifunctional self-compensation by applying two independent phases on the metalens. The BABM has advantages of being flexible, single-layer, convenient in manufacturing, and optical path miniaturization friendly, and will open a new page in advanced integrated optical systems.