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Xu B, Wei W, Tang P, Shao J, Zhao X, Chen B, Dong S, Wu C. A Multi-foci Sparse-Aperture Metalens. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309648. [PMID: 38483885 PMCID: PMC11109648 DOI: 10.1002/advs.202309648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/18/2024] [Indexed: 05/23/2024]
Abstract
Multi-foci lenses are essential components for optical communications, virtual reality display and microscopy, yet the bulkiness of conventional counterparts has significantly hindered their widespread applications. Benefiting from the unprecedented capability of metasurfaces in light modulation, metalenses are able to provide multi-foci functionality with a more compact footprint. However, achieving imaging quality comparable to that of corresponding single-foci metalenses at each focal point poses a challenge for existing multi-foci metalenses. Here, a polarization-independent all-dielectric multi-foci metalens is proposed and experimentally demonstrated by spatially integrating single-foci optical sparse-aperture sub-metalenses. Such design enables the metalens to generate multiple focal points, while maintaining the ability to capture target information comparable to that of a single-foci metalens. The proposed multi-foci metalens is composed of square-nanohole units array fabricated by two-photon polymerization. The focusing characteristic and imaging capability are demonstrated upon the illumination of an unpolarized light beam. This work finds a novel route toward multi-foci metalenses and may open a new avenue for dealing with the trade-off between multi-foci functionality and high-quality imaging performance.
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Affiliation(s)
- Borui Xu
- Center for BiophotonicsInstitute of Medical RoboticsSchool of Biomedical EngineeringShanghai Jiao Tong UniversityShanghai200240China
| | - Wei Wei
- Center for BiophotonicsInstitute of Medical RoboticsSchool of Biomedical EngineeringShanghai Jiao Tong UniversityShanghai200240China
| | - Ping Tang
- Center for BiophotonicsInstitute of Medical RoboticsSchool of Biomedical EngineeringShanghai Jiao Tong UniversityShanghai200240China
| | - Jingzhu Shao
- Center for BiophotonicsInstitute of Medical RoboticsSchool of Biomedical EngineeringShanghai Jiao Tong UniversityShanghai200240China
| | - Xiangyu Zhao
- Center for BiophotonicsInstitute of Medical RoboticsSchool of Biomedical EngineeringShanghai Jiao Tong UniversityShanghai200240China
| | - Bo Chen
- Center for BiophotonicsInstitute of Medical RoboticsSchool of Biomedical EngineeringShanghai Jiao Tong UniversityShanghai200240China
| | - Shengxiang Dong
- Center for BiophotonicsInstitute of Medical RoboticsSchool of Biomedical EngineeringShanghai Jiao Tong UniversityShanghai200240China
| | - Chongzhao Wu
- Center for BiophotonicsInstitute of Medical RoboticsSchool of Biomedical EngineeringShanghai Jiao Tong UniversityShanghai200240China
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2
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Hongli Y, Zhaofeng C, Xiaotong L. Broadband achromatic and wide field of view metalens-doublet by inverse design. OPTICS EXPRESS 2024; 32:15315-15325. [PMID: 38859185 DOI: 10.1364/oe.520832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/02/2024] [Indexed: 06/12/2024]
Abstract
Metalenses, composed of patterned meta-atoms in various dimensions, offer tailored modulation of phase, amplitude, and polarization for diverse imaging applications across the visible and near-infrared spectra. However, simultaneously achieving achromatic and wide field of view (WFOV) imaging remains a significant challenge. In this paper, we propose a general inverse design framework for metalens-doublets that simultaneously enables broadband achromatic and WFOV imaging. The broadband achromatic and WFOV (BA&WFOV) metalens-doublet comprises a propagation phase metalens and a geometric phase metalens positioned on opposite sides of the substrate. This framework requires only once polarization conversion and mitigates aperture size constraints imposed by the limited group delay (GD) range of meta-atoms. We present a BA&WFOV metalens-doublet with an f-number of 3.9, a full field of view (FOV) of 68°, and a wavelength range from 640nm to 820nm. This metalens-doublet exhibits diffraction-limited focusing with an average absolute focusing efficiency of 16% and an average relative focusing efficiency of 60%. This innovative framework holds significant promise for applications in fields such as phone cameras, VR/AR, and endoscopes.
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Cheng W, Wang Y, Zhang Y, Chen H, Lu Z, Zhao F, Wang Y, Wu J, Yang J. Broadband Achromatic Imaging of a Metalens with Optoelectronic Computing Fusion. NANO LETTERS 2024; 24:254-260. [PMID: 38133576 DOI: 10.1021/acs.nanolett.3c03891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
The remarkable ultrathin ability of metalenses gives them potential as a next-generation imaging candidate. However, the inherent chromatic aberration of metalenses restricts their widespread application. We present an achromatic metalens with optoelectronic computing fusion (OCF) to mitigate the impact of chromatic aberration and simultaneously avoid the significant challenges of nanodesign, nanofabrication, and mass production of metalenses, a method different from previous methods. Leveraging the nonlinear fitting, we demonstrate that OCF can effectively learn the chromatic aberration mapping of metalens and thus restore the chromatic aberration. In terms of the peak signal-to-noise ratio index, there is a maximum improvement of 12 dB, and ∼8 ms is needed to correct the chromatic aberration. Furthermore, the edge extraction of images and super-resolution reconstruction that effectively enhances resolution by a factor of 4 are also demonstrated with OCF. These results offer the possibility of applications of metalenses in mobile cameras, virtual reality, etc.
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Affiliation(s)
- Wei Cheng
- Center of Material Science, National University of Defense Technology, Changsha, Hunan 410073, China
- College of Computer, Key Laboratory of Advanced Microprocessor Chips and Systems, National University of Defense Technology, Changsha, Hunan 410073, China
- School of Physical Science and Technology, Southwest University, Chongqing 400715, China
| | - Yan Wang
- Center of Material Science, National University of Defense Technology, Changsha, Hunan 410073, China
- School of Physical Science and Technology, Southwest University, Chongqing 400715, China
- Institute for Quantum Information & State Key Laboratory of High Performance Computing, College of Computer Science and Technology, National University of Defense Technology, Changsha, Hunan 410073, China
| | - Yuqing Zhang
- Center of Material Science, National University of Defense Technology, Changsha, Hunan 410073, China
- School of Physical Science and Technology, Southwest University, Chongqing 400715, China
| | - Huan Chen
- Center of Material Science, National University of Defense Technology, Changsha, Hunan 410073, China
| | - Zhechun Lu
- Center of Material Science, National University of Defense Technology, Changsha, Hunan 410073, China
| | - Fen Zhao
- Center of Material Science, National University of Defense Technology, Changsha, Hunan 410073, China
- School of Artificial Intelligence, Chongqing University of Technology, Chongqing 400054, China
| | - Yaohua Wang
- College of Computer, Key Laboratory of Advanced Microprocessor Chips and Systems, National University of Defense Technology, Changsha, Hunan 410073, China
| | - Jiagui Wu
- School of Physical Science and Technology, Southwest University, Chongqing 400715, China
| | - Junbo Yang
- Center of Material Science, National University of Defense Technology, Changsha, Hunan 410073, China
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Barulin A, Kim Y, Oh DK, Jang J, Park H, Rho J, Kim I. Dual-wavelength metalens enables Epi-fluorescence detection from single molecules. Nat Commun 2024; 15:26. [PMID: 38167868 PMCID: PMC10761847 DOI: 10.1038/s41467-023-44407-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 12/12/2023] [Indexed: 01/05/2024] Open
Abstract
Single molecule fluorescence spectroscopy is at the heart of molecular biophysics research and the most sensitive biosensing assays. The growing demand for precision medicine and environmental monitoring requires the creation of miniaturized and portable sensing platforms. However, the need for highly sophisticated objective lenses has precluded the development of single molecule detection systems for truly portable devices. Here, we propose a dielectric metalens device of submicrometer thickness to excite and collect light from fluorescent molecules instead of an objective lens. The high numerical aperture, high focusing efficiency, and dual-wavelength operation of the metalens enable the implementation of fluorescence correlation spectroscopy with a single Alexa 647 molecule in the focal volume. Moreover, the metalens enables real-time monitoring of individual fluorescent nanoparticle transitions and identification of hydrodynamic diameters ranging from a few to hundreds of nanometers. This advancement in sensitivity extends the application of the metalens technology to ultracompact single-molecule sensors.
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Affiliation(s)
- Aleksandr Barulin
- Department of Biophysics, Institute of Quantum Biophysics, Sungkyunkwan University, Suwon, 16419, Republic of Korea
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Yeseul Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Dong Kyo Oh
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Jaehyuck Jang
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
- POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics, Pohang, 37673, Republic of Korea
| | - Hyemi Park
- Department of Biophysics, Institute of Quantum Biophysics, Sungkyunkwan University, Suwon, 16419, Republic of Korea
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Junsuk Rho
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
- POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics, Pohang, 37673, Republic of Korea.
- National Institute of Nanomaterials Technology (NINT), Pohang, 37673, Republic of Korea.
| | - Inki Kim
- Department of Biophysics, Institute of Quantum Biophysics, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
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Chu Y, Chen C, Xiao X, Shen W, Ye X, Zhu S, Li T. Full-space wavefront control enabled by a bilayer metasurface sandwiching 1D photonic crystal. OPTICS LETTERS 2023; 48:5895-5898. [PMID: 37966746 DOI: 10.1364/ol.501949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 10/15/2023] [Indexed: 11/16/2023]
Abstract
Metasurfaces, composed of sub-wavelength structures, have a powerful capability to manipulate light propagations. However, metasurfaces usually work either in pure reflection mode or pure transmission mode. Achieving full-space manipulation of light at will in the optical region is still challenging. Here we propose a design method of full-space meta-device containing a bilayer metasurface sandwiching 1D photonic crystal to manipulate the transmitted and reflected wave independently. To provide a proof-of-concept demonstration, a device is proposed to show the light focusing in transmission and a vortex beam in reflection. Meanwhile, a device focusing the reflected light with oblique 45° incidence and the transmitted light with normal incidence is designed to indicate its application potential in augmented reality (AR) application. Our design provides a promising way to enrich the multifunctional meta-devices for potential applications.
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Lin CH, Huang SH, Lin TH, Wu PC. Metasurface-empowered snapshot hyperspectral imaging with convex/deep (CODE) small-data learning theory. Nat Commun 2023; 14:6979. [PMID: 37914700 PMCID: PMC10620425 DOI: 10.1038/s41467-023-42381-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 10/10/2023] [Indexed: 11/03/2023] Open
Abstract
Hyperspectral imaging is vital for material identification but traditional systems are bulky, hindering the development of compact systems. While previous metasurfaces address volume issues, the requirements of complicated fabrication processes and significant footprint still limit their applications. This work reports a compact snapshot hyperspectral imager by incorporating the meta-optics with a small-data convex/deep (CODE) deep learning theory. Our snapshot hyperspectral imager comprises only one single multi-wavelength metasurface chip working in the visible window (500-650 nm), significantly reducing the device area. To demonstrate the high performance of our hyperspectral imager, a 4-band multispectral imaging dataset is used as the input. Through the CODE-driven imaging system, it efficiently generates an 18-band hyperspectral data cube with high fidelity using only 18 training data points. We expect the elegant integration of multi-resonant metasurfaces with small-data learning theory will enable low-profile advanced instruments for fundamental science studies and real-world applications.
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Affiliation(s)
- Chia-Hsiang Lin
- Department of Electrical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan.
- Miin Wu School of Computing, National Cheng Kung University, Tainan, 70101, Taiwan.
| | - Shih-Hsiu Huang
- Department of Photonics, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Ting-Hsuan Lin
- Department of Electrical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Pin Chieh Wu
- Department of Photonics, National Cheng Kung University, Tainan, 70101, Taiwan.
- Center for Quantum Frontiers of Research & Technology (QFort), National Cheng Kung University, Tainan, 70101, Taiwan.
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Barulin A, Park H, Park B, Kim I. Dual-wavelength UV-visible metalens for multispectral photoacoustic microscopy: A simulation study. PHOTOACOUSTICS 2023; 32:100545. [PMID: 37645253 PMCID: PMC10461252 DOI: 10.1016/j.pacs.2023.100545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/01/2023] [Accepted: 08/13/2023] [Indexed: 08/31/2023]
Abstract
Photoacoustic microscopy is advancing with research on utilizing ultraviolet and visible light. Dual-wavelength approaches are sought for observing DNA/RNA- and vascular-related disorders. However, the availability of high numerical aperture lenses covering both ultraviolet and visible wavelengths is severely limited due to challenges such as chromatic aberration in the optics. Herein, we present a groundbreaking proposal as a pioneering simulation study for incorporating multilayer metalenses into ultraviolet-visible photoacoustic microscopy. The proposed metalens has a thickness of 1.4 µm and high numerical aperture of 0.8. By arranging cylindrical hafnium oxide nanopillars, we design an achromatic transmissive lens for 266 and 532 nm wavelengths. The metalens achieves a diffraction-limited focal spot, surpassing commercially available objective lenses. Through three-dimensional photoacoustic simulation, we demonstrate high-resolution imaging with superior endogenous contrast of targets with ultraviolet and visible optical absorption bands. This metalens will open new possibilities for downsized multispectral photoacoustic microscopy in clinical and preclinical applications.
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Affiliation(s)
- Aleksandr Barulin
- Department of Biophysics, Institute of Quantum Biophysics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hyemi Park
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Byullee Park
- Department of Biophysics, Institute of Quantum Biophysics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Inki Kim
- Department of Biophysics, Institute of Quantum Biophysics, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon 16419, Republic of Korea
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8
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Zhao W, Zhou Y, Feng YZ, Niu X, Zhao Y, Zhao J, Dong Y, Tan M, Xianyu Y, Chen Y. Computer Vision-Based Artificial Intelligence-Mediated Encoding-Decoding for Multiplexed Microfluidic Digital Immunoassay. ACS NANO 2023; 17:13700-13714. [PMID: 37458511 DOI: 10.1021/acsnano.3c02941] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
Digital immunoassays with multiplexed capacity, ultrahigh sensitivity, and broad affordability are urgently required in clinical diagnosis, food safety, and environmental monitoring. In this work, a multidimensional digital immunoassay has been developed through microparticle-based encoding and artificial intelligence-based decoding, enabling multiplexed detection with high sensitivity and convenient operation. The information encoded in the features of microspheres, including their size, number, and color, allows for the simultaneous identification and accurate quantification of multiple targets. Computer vision-based artificial intelligence can analyze the microscopy images for information decoding and output identification results visually. Moreover, the optical microscopy imaging can be well integrated with the microfluidic platform, allowing for encoding-decoding through the computer vision-based artificial intelligence. This microfluidic digital immunoassay can simultaneously analyze multiple inflammatory markers and antibiotics within 30 min with high sensitivity and a broad detection range from pg/mL to μg/mL, which holds great promise as an intelligent bioassay for next-generation multiplexed biosensing.
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Affiliation(s)
- Weiqi Zhao
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei China
| | - Yang Zhou
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei China
- College of Engineering, Huazhong Agricultural University, Wuhan, 430070, Hubei China
| | - Yao-Ze Feng
- College of Engineering, Huazhong Agricultural University, Wuhan, 430070, Hubei China
| | - Xiaohu Niu
- College of Engineering, Huazhong Agricultural University, Wuhan, 430070, Hubei China
| | - Yongkun Zhao
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei China
- College of Engineering, Huazhong Agricultural University, Wuhan, 430070, Hubei China
| | - Junpeng Zhao
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei China
| | - Yongzhen Dong
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei China
| | - Mingqian Tan
- Academy of Food Interdisciplinary Science, School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, Liaoning China
| | - Yunlei Xianyu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, Zhejiang China
| | - Yiping Chen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei China
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Yang Y, Seong J, Choi M, Park J, Kim G, Kim H, Jeong J, Jung C, Kim J, Jeon G, Lee KI, Yoon DH, Rho J. Integrated metasurfaces for re-envisioning a near-future disruptive optical platform. LIGHT, SCIENCE & APPLICATIONS 2023; 12:152. [PMID: 37339970 DOI: 10.1038/s41377-023-01169-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 02/16/2023] [Accepted: 04/24/2023] [Indexed: 06/22/2023]
Abstract
Metasurfaces have been continuously garnering attention in both scientific and industrial fields, owing to their unprecedented wavefront manipulation capabilities using arranged subwavelength artificial structures. To date, research has mainly focused on the full control of electromagnetic characteristics, including polarization, phase, amplitude, and even frequencies. Consequently, versatile possibilities of electromagnetic wave control have been achieved, yielding practical optical components such as metalenses, beam-steerers, metaholograms, and sensors. Current research is now focused on integrating the aforementioned metasurfaces with other standard optical components (e.g., light-emitting diodes, charged-coupled devices, micro-electro-mechanical systems, liquid crystals, heaters, refractive optical elements, planar waveguides, optical fibers, etc.) for commercialization with miniaturization trends of optical devices. Herein, this review describes and classifies metasurface-integrated optical components, and subsequently discusses their promising applications with metasurface-integrated optical platforms including those of augmented/virtual reality, light detection and ranging, and sensors. In conclusion, this review presents several challenges and prospects that are prevalent in the field in order to accelerate the commercialization of metasurfaces-integrated optical platforms.
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Affiliation(s)
- Younghwan Yang
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Junhwa Seong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Minseok Choi
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Junkyeong Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Gyeongtae Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Hongyoon Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Junhyeon Jeong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Chunghwan Jung
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Joohoon Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Gyoseon Jeon
- Research Institute of Industrial Science and Technology (RIST), Pohang, 37673, Republic of Korea
| | - Kyung-Il Lee
- Research Institute of Industrial Science and Technology (RIST), Pohang, 37673, Republic of Korea
| | - Dong Hyun Yoon
- Research Institute of Industrial Science and Technology (RIST), Pohang, 37673, Republic of Korea
| | - Junsuk Rho
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
- POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics, Pohang, 37673, Republic of Korea.
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10
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Hu T, Wang S, Wei Y, Wen L, Feng X, Yang Z, Zheng J, Zhao M. Design of a centimeter-scale achromatic hybrid metalens with polarization insensitivity in the visible. OPTICS LETTERS 2023; 48:1898-1901. [PMID: 37221794 DOI: 10.1364/ol.482794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 02/04/2023] [Indexed: 05/25/2023]
Abstract
Achromatic metalenses formed using previous design methods face a compromise between diameter, numerical aperture, and working wave band. To address this problem, the authors coat the refractive lens with a dispersive metasurface and numerically demonstrate a centimeter-scale hybrid metalens for the visible band of 440-700 nm. By revisiting the generalized Snell law, a universal design of a chromatic aberration correction metasurface is proposed for a plano-convex lens with arbitrary surface curvatures. A highly precise semi-vector method is also presented for large-scale metasurface simulation. Benefiting from this, the reported hybrid metalens is carefully evaluated and exhibits 81% chromatic aberration suppression, polarization insensitivity, and broadband imaging capacity.
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11
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Hu T, Feng X, Wei Y, Wang S, Wei Y, Yang Z, Zhao M. Design of an achromatic zoom metalens doublet in the visible. OPTICS LETTERS 2022; 47:6460-6463. [PMID: 36538462 DOI: 10.1364/ol.473597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/15/2022] [Indexed: 06/17/2023]
Abstract
Zoom metalens doublets, featuring ultra-compactness, strong zoom capability, and CMOS compatibility, exhibit unprecedented advantages over the traditional refractive zoom lens. However, the huge chromatic aberration narrows the working bandwidth, which limits their potential applications in broadband systems. Here, by globally optimizing the phase profiles in the visible, we designed and numerically demonstrated a moiré lens based zoom metalens doublet that can achromatically work in the band of 440-640 nm. Such a doublet can achieve a continuous zoom range from 1× to 10×, while also maintaining a high focusing efficiency up to 86.5% and polarization insensitivity.
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12
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Wang G, Guo J, Wang X, Hu B, Situ G, Zhang Y. Arbitrary Jones matrix on-demand design in metasurfaces using multiple meta-atoms. NANOSCALE 2022; 14:14240-14247. [PMID: 36128908 DOI: 10.1039/d2nr03827g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Super cells or multi-layer metasurfaces are used to realize various multi-functional and exotic functional devices. In such methods, the design space expands exponentially as more variable parameters are introduced; however, this will necessitate huge computational effort without special treatment. The function of a metasurface can be described mathematically by using a Jones matrix. When the gap between adjacent atoms is sufficiently large, the overall Jones matrix of a 3D lattice which is composed of multiple meta-atoms can be obtained by adding or multiplying each meta-atom's Jones matrix for a parallel or cascaded arrangement, respectively. Reversely, an arbitrary Jones matrix can be decomposed to achieve a combination of diagonal and rotation matrices. This means that the devices with various functions can be constructed by combining, cascading, and rotating a kind of atom, and thus the computation requirements will be reduced significantly. In this work, the feasibility of this approach is demonstrated with two cases, circular polarization selective transmission and resemble optical activity. Both the simulation and experiment are consistent with the hypothesis. This method can manipulate all degrees of freedom in a Jones matrix and reduce design complexity and may find applications to extend the scope of meta-optics.
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Affiliation(s)
- Guocui Wang
- Beijing Engineering Research Center for Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
- Beijing Key Laboratory of Metamaterials and Devices, Key Laboratory of Terahertz Optoelectronics Ministry of Education, Department of Physics, Capital Normal University, Beijing, 100048, China.
| | - Jinying Guo
- Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xinke Wang
- Beijing Key Laboratory of Metamaterials and Devices, Key Laboratory of Terahertz Optoelectronics Ministry of Education, Department of Physics, Capital Normal University, Beijing, 100048, China.
| | - Bin Hu
- Beijing Engineering Research Center for Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
| | - Guohai Situ
- Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Yan Zhang
- Beijing Key Laboratory of Metamaterials and Devices, Key Laboratory of Terahertz Optoelectronics Ministry of Education, Department of Physics, Capital Normal University, Beijing, 100048, China.
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