Article
Nanoscience & Nanotechnology
Xiaoluo He, Chu Qi, Sheng Lei, Alex M. H. Wong
Summary: In this work, a dual-polarized, broadband and high NA achromatic metalens based on the Huygens' metasurface is proposed. The metalens achieves diffraction-limited focusing with 2% maximum focal length deviation and 70% average focusing efficiency over a bandwidth of 16.7%. It opens wide-ranging opportunities for microwave and mm-wave imaging and communication applications.
Article
Materials Science, Multidisciplinary
Fan Yang, Hung- Lin, Mikhail Y. Shalaginov, Katherine Stoll, Sensong An, Clara Rivero-Baleine, Myungkoo Kang, Anuradha Agarwal, Kathleen Richardson, Hualiang Zhang, Juejun Hu, Tian Gu
Summary: This paper presents a zoom lens design based on multi-functional optical metasurfaces, achieving 10x parfocal zoom using polarization-multiplexing in the visible and phase change materials in the mid-infrared, with large step zoom ratios and minimal distortion.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Optics
Tianyu Zhao, Yihui Wu, Yi Xing, Yue Wang, Jie Wu, Wenchao Zhou
Summary: Metasurface manipulates electromagnetic waves through subwavelength microstructure to control their polarization, phase, amplitude, frequency, and other characteristics. This paper proposes a method using genetic algorithm and computer-generated hologram to achieve an array of focused or vortex beams without polarization selection property based on wavelength multiplexing. Simulation results indicate its promising applications in optical communication and manipulation.
Article
Optics
Fan Yang, Khoi Phuong Dao, Sensong An, Xiaoming Qiu, Yifei Zhang, Juejun Hu, Tian Gu
Summary: Active metasurfaces with tunable optical properties enable reconfigurable or programmable photonic systems. Achieving continuous tuning of phase-gradient metasurfaces is a challenge. This paper proposes a novel design principle to enable continuous tuning by modulating the gradients of metasurface phase profiles over large regions instead of at individual locations. This design principle can be applied to different active tuning mechanisms.
Article
Chemistry, Multidisciplinary
Mengyun Wang, June Sang Lee, Samarth Aggarwal, Nikolaos Farmakidis, Yuhan He, Tangsheng Cheng, Harish Bhaskaran
Summary: The field of flat optics using nanostructured metasurfaces has made great progress in the last decade. Chalcogenide phase-change materials (PCMs) have shown potential in realizing reconfigurable metasurfaces. This study demonstrates active polarization-insensitive phase-change metalenses at near-IR wavelengths using a low-loss PCM Sb2Se3. The material's ultralow-loss nature opens up new possibilities for optical communications, multi-depth imaging, beam steering, optical routing, and holography.
Article
Nanoscience & Nanotechnology
Nan He, Tingbiao Guo, Jiahan Tian, Ji Du, Zhipeng Hu, Yuxin Xing, Yi Jin, Junping Zhang, Sailing He
Summary: Free space optical communication (FSO) is gaining attention due to high information capacity demand. A novel duplex FSO system utilizing a compact fiber coupling metalens is demonstrated, achieving a large field of view and high coupling efficiency. The system shows excellent downlink/uplink communication performance with low bit error rate and clear eye diagram, meeting the requirements of smart devices.
Article
Optics
Yuxin Liu, Jie Lin, Yu-Sheng Lin
Summary: A reconfigurable metalens with dual-liner-focus (DLF) phase distribution is proposed, which exhibits excellent focus performance at a wavelength of 300 μm in the right circularly polarized (RCP) mode. The focal length of the double-layer reconfigurable metalens with DLF phase distribution can be tuned from 1.48 cm to 2.98 cm, with a high-quality focusing characteristics. Additionally, a metalens with DLF phase distribution is presented to possess polarization controllable bifocal and varifocal characteristics.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Zhipeng Zhang, Zhao Zhang, Zijin Tong, Mingyu Yang, Junneng Guan, Yaqi Jin, Chunhua Tan, Faqiang Wang, Zhongchao Wei, Hongyun Meng
Summary: In this paper, a multifunctional metalens with three operating modes is designed by combining the phase-change material antimony selenide (Sb2Se3) with the bilayer Pancharatnam-Berry (P-B) phase. The metalens can achieve arbitrary switching among different focus modes by reversibly transforming the nanofins between crystalline and amorphous states. The proposed metalens has high focusing efficiency and can be applied in various fields, such as biomedical imaging and optical communication systems.
RESULTS IN PHYSICS
(2023)
Article
Optics
Chunsheng Xia, Yongze Ren, Peicheng Lin, Yilin Wang, Ting Xu
Summary: We demonstrate a single-layer silicon metasurface-based polarizing beam splitter (PBS) that can deflect two orthogonally linearly polarized infrared light beams to on-demand angles. This metasurface consists of silicon anisotropic microstructures, providing different phase profiles for the two orthogonal polarization states. Experimental results show good splitting performance for x- and y-polarized light at a wavelength of 10 μm. This planar and thin PBS has potential applications in compact thermal infrared systems.
Article
Optics
Haoyu Wang, Zhiyu Zhang, Kun Zhao, Wen Liu, Pei Wang, Yonghua Lu
Summary: This research demonstrates a novel multifunctional metasurface by independently manipulating the phase of two orthogonal polarizations using dielectric nanoposts. A beam splitter and a bifocal metalens were realized in a single-layer dielectric metasurface, showing a new route to design multifunctional meta surfaces with various applications.
CHINESE OPTICS LETTERS
(2021)
Article
Optics
Qike Sun, Haoxiang Chen, Tao Wang, Junqing Wang, Jianhong Yang, Hao Jia
Summary: This article proposes an ultra-broadband polarization beam splitter working at 2-μm wavelengths. It utilizes a coupled-mode based directional coupler and subwavelength grating structures for efficient dispersion control. The device can achieve tunable transmissions in different material states.
OPTICS COMMUNICATIONS
(2022)
Article
Optics
Feng Zhao, Zicheng Shen, Decheng Wang, Bijie Xu, Xiangning Chen, Yuanmu Yang
Summary: Researchers proposed adopting a synthetic aperture approach to alleviate the aperture size limitation of metalenses, and experimentally demonstrated its feasibility. It was found that a synthetic aperture metalens composed of multiple metalenses with small aperture size can achieve imaging resolution comparable to a conventional lens, providing a new direction for the further development of metalens technology.
PHOTONICS RESEARCH
(2021)
Article
Multidisciplinary Sciences
Xiujuan Zou, Youming Zhang, Ruoyu Lin, Guangxing Gong, Shuming Wang, Shining Zhu, Zhenlin Wang
Summary: High-performance metasurface-based Bayer-type color routers are realized using the inverse-design method, achieving higher color collection efficiency and energy utilization efficiency for color imaging applications.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Yijie Gu, Ran Hao, Er-Ping Li
Summary: An innovative single-layer, transmissive metalens has been developed for focusing orthogonal polarization components of incident light to two independent focal spots, while maintaining the initial polarization states. By utilizing a deep neural network for efficient and accurate design parameter generation, this metalens represents a new solution for multi-foci metalens and polarization beam splitter applications. Good agreement between simulation and theoretical predictions indicates the potential suitability of this technology for deep sensing, holography, information encryption, and display purposes.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Multidisciplinary Sciences
Zil Li, Liangui Deng, Juan Deng, Zhixue He, Jin Tao, Guoxing Zheng, Shaohua Yu
Summary: The integration of color-nanoprints, gray-imaging elements, and binary-pattern-imaging elements into a three-in-one nanoprint with negligible crosstalk demonstrates the synergy of different light manipulation mechanisms. This approach can enhance system integration and security, making it applicable to various advanced applications in data storage and optical information encoding.
Article
Optics
Shuai Qin, Ning Xu, Hui Huang, Kaiqian Jie, Hongzhan Liu, Jianping Guo, Hongyun Meng, Faqiang Wang, Xiangbo Yang, Zhongchao Wei
Summary: This paper introduces a focus-tunable metalens based on the phase change material Sb2S3, which has low losses and refractive index shift characteristics between the amorphous and crystalline states, enabling variable focal length with excellent focusing efficiency and focal point width performance.
Article
Chemistry, Multidisciplinary
Ning Xu, Yuan Hao, Kaiqian Jie, Shuai Qin, Hui Huang, Li Chen, Hongzhan Liu, Jianping Guo, Hongyun Meng, Faqiang Wang, Xiangbo Yang, Zhongchao Wei
Summary: This paper introduces a novel electrically-driven zoom metalens (EZM) utilizing the electro-optic effect to accurately control the phase distribution, achieving high-speed zooming and ultra-compact design. This metalens can be widely applied in fields requiring precise beam focusing and zoom imaging.
Article
Materials Science, Multidisciplinary
Hongyang Shen, Chunyang Liu, Fengxiang Liu, Yaqi Jin, Banghong Guo, Zhongchao Wei, Faqiang Wang, Chunhua Tan, Xuguang Huang, Hongyun Meng
Summary: A multi-band absorber based on a hybrid metal-graphene metasurface is proposed for detecting surrounding refractive index, achieving high absorption rates and sensitivities. The structure allows for flexible adjustment of absorption peaks and can be used as a refractive index sensor.
RESULTS IN PHYSICS
(2021)
Article
Physics, Multidisciplinary
Yongkang Song, Weici Liu, Xiaolei Wang, Faqiang Wang, Zhongchao Wei, Hongyun Meng, Ning Lin, Hongqiang Zhang
Summary: This paper designs a temperature-controllable multifunctional Metasurface lens and a polarization-sensitive intensity-tunable metalens, which can achieve focus adjustment under different polarization states and change in output light intensity.
FRONTIERS IN PHYSICS
(2021)
Article
Optics
Zhenyong Dong, Yaqi Jin, Guanbin Zhang, Jie Zhou, Chunyang Liu, Fengxiang Liu, Zhongchao Wei, Faqiang Wang, Chunhua Tan, Hongyun Meng
Summary: This paper proposes a single core-offset Mach-Zehnder interferometer coated with polyvinyl alcohol for simultaneous measurement of relative humidity and temperature. The experimental results show that the sensor has good repeatability and high sensitivity, with potential applications for RH and temperature measurement.
Article
Optics
Zhenyong Dong, Guanbin Zhang, Yaqi Jin, Jie Zhou, Junneng Guan, Zijin Tong, Zhongchao Wei, Chunhua Tan, Faqiang Wang, Hongyun Meng
Summary: We have developed an intensity modulated optical fiber sensor coated with hydroxyethyl cellulose (HEC) hydrogel for simultaneous measurement of humidity (RH) and temperature. The sensor exhibits high sensitivity and robustness, making it suitable for various applications in daily life and other fields.
Article
Nanoscience & Nanotechnology
Xiaomin Wang, Xiangbo Yang, Yao Zhang, Fen Tang, Dongmei Deng, Hongzhan Liu, Zhongchao Wei
Summary: This paper investigates the singular optical properties of one-dimensional Fibonacci optical waveguide networks composed of parity-time-symmetric elements. Various systematic phases and transparencies were found, which can be useful for designing novel structures with singular optical properties.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Li Chen, Yue Liu, Lin Zhao, Kuangling Guo, Zhongchao Wei, Hongyun Meng, Faqiang Wang, Ruihuan Wu, Hongzhan Liu
Summary: This paper proposes a bilayer metasurface with dual-operating modes for the generation and conversion of dual-band Laguerre-Gaussian beams with different orbital angular momentum (OAM). The metasurface can multiplex OAM modes in transmission mode and convert OAM in reflection mode. This work provides a valid method for OAM multiplexing and conversion, which has significant applications in high-speed optical communication systems.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Optics
Yuhang Zhang, Zuyu Li, Shuai Qin, Hui Huang, Kaiqian Jie, Jianping Guo, Hongzhan Liu, Hongyun Meng, Faqiang Wang, Xiangbo Yang, Zhongchao Wei
Summary: This study proposes a bilayer metalens that can switch achromatic bands by changing the state of a material, and demonstrates its potential in various applications.
Article
Optics
Zuyu Li, Yuhang Zhang, Hui Huang, Shuai Qin, Kaiqian Jie, Hongzhan Liu, Jianping Guo, Hongyun Meng, Faqiang Wang, Xiangbo Yang, Zhongchao Wei
Summary: This study proposes a single layer multifunctional metasurface for independently and simultaneously displaying nanoprinting and holographic images. By tailoring the dimensions and orientation angle of nanobricks, the amplitude and phase can be artificially designed. Compared with previous work, our metasurfaces significantly improve the quality of holographic images while not affecting nanoprinting images, with simple structures.
Article
Chemistry, Multidisciplinary
Kaiqian Jie, Hui Huang, Shuai Qin, Jianping Guo, Hongzhan Liu, Hongyun Meng, Faqiang Wang, Xiangbo Yang, Zhongchao Wei
Summary: An electronically controlled metasurface depolarizer is demonstrated in this paper, based on the time-domain integral average method and nano-material barium titanate. It can convert linearly polarized light to emergent light with a degree of polarization reduced to 2.5%, and has a transmission efficiency greater than 72%.
Article
Optics
Zhao Zhang, Zhipeng Zhang, Zijin Tong, Mingyu Yang, Junneng Guan, Yaqi Jin, Zhongchao Wei, Faqiang Wang, Chunhua Tan, Hongyun Meng
Summary: The metasurface based on independent and simultaneous control of near field and far field shows great potential for multichannel optics platform devices. By introducing Marius' law and Propagation phase, this study effectively manipulates the amplitude and phase of transmission under a line source. Simulation results demonstrate the feasibility of achieving the same display effect as multiple light sources and encoding near-field binary images. This metasurface has applications in multi-channel optical platforms, image displays, optical storage, optical anti-counterfeiting, and information encryption technology.
Article
Optics
Yan Zhi, Weici Liu, Xiangbo Yang, Zhongchao Wei, Shiping DU, Hongyun Meng, Hongzhan Liu, Jianping Guo, Manxing Yang, Jianan Wang, Liujing Xiang, Zhenming Huang, Haoxian LI, Faqiang Wang
Summary: In this study, a one-dimensional two-material period ring optical waveguide network (TMPROWN) was designed and its optical properties were investigated. Key characteristics observed in the 1D TMPROWN include the generation of bound states in continuum (BICs) and their larger and continuous range compared to previous optical structures. The physical mechanisms of the generated BICs in the 1D TMPROWN were analyzed. The simplicity of its structure, flexibility in adjusting frequency band of BICs, and ease of measuring electromagnetic wave properties make the 1D TMPROWN promising for various optical applications.
