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He Y, Chen Y, La X, Dai C, Tian Z, Dai J. Coherent polarization control of terahertz emission from graphene under excitation of two-color co-circularly polarized laser fields. OPTICS LETTERS 2024; 49:4469-4472. [PMID: 39090961 DOI: 10.1364/ol.528828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Accepted: 07/09/2024] [Indexed: 08/04/2024]
Abstract
Coherent polarization control of terahertz (THz) emission is crucial for applications in the THz field. Here, we demonstrate that the polarization of THz waves emitted from graphene through quantum interference can be coherently controlled by varying the relative phase between the co-circularly polarized laser fields. The polarization state of the THz wave emitted from graphene remains linearly polarized, while its direction can be arbitrarily changed by varying the relative phase. This work not only achieves the coherent polarization control of the THz waves emitted from graphene but also promotes the fundamental research of THz photonics in graphene.
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Sun Y, Cai B, Yang L, Wu L, Cheng Y, Luo H, Chen F, Li X. High-Gain Dual-Polarization Microstrip Antenna Based on Transmission Focusing Metasurface. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3730. [PMID: 39124394 PMCID: PMC11313525 DOI: 10.3390/ma17153730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 06/08/2024] [Accepted: 07/24/2024] [Indexed: 08/12/2024]
Abstract
In this paper, a single-feed microstrip antenna (MA) equipped with a transmission-mode focusing metasurface (MS) is proposed to achieve dual-polarization capabilities and superior high-gain radiation performance. The original-feed MA comprises two distinct layers of coaxial-fed tangential patches, enabling it to emit a circular polarization (CP) wave with a gain of 3.5 dBic at 5.6 GHz and linear polarization (LP) radiation with a gain of 4 dBi at 13.7 GHz. To improve the performance of the single-feed MA, a dual-polarization transmission focusing MS is proposed and numerically substantiated. By positioning the originally designed MA at the focal point of the MS, we create a transmission-mode MS antenna system capable of achieving CP and LP radiations with the significantly higher gains of 12.9 dBic and 14.8 dBi at 5.6 GHz and 13.7 GHz, respectively. Measurements conducted on the fabricated dual-polarization focusing MS antenna closely align with the simulation results, validating the effectiveness of our approach. This work underscores the significant potential of dual-polarization high-speed data systems and offers a practical solution for enhancing antenna gains in contemporary wireless communication systems.
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Affiliation(s)
- Yibo Sun
- School of Information Science and Engineering, Engineering Research Center for Metallurgical Automation and Detecting Technology Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China; (Y.S.); (B.C.); (H.L.); (F.C.)
| | - Bin Cai
- School of Information Science and Engineering, Engineering Research Center for Metallurgical Automation and Detecting Technology Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China; (Y.S.); (B.C.); (H.L.); (F.C.)
| | - Lingling Yang
- School of Electronic Engineering, Wuhan Open University, Wuhan 430205, China;
| | - Ling Wu
- School of Physics and Electronic Information Engineering, Hubei Engineering University, Xiaogan 432000, China;
| | - Yongzhi Cheng
- School of Information Science and Engineering, Engineering Research Center for Metallurgical Automation and Detecting Technology Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China; (Y.S.); (B.C.); (H.L.); (F.C.)
- Key Laboratory of High Temperature Electromagnetic Materials and Structure of MOE, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Hui Luo
- School of Information Science and Engineering, Engineering Research Center for Metallurgical Automation and Detecting Technology Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China; (Y.S.); (B.C.); (H.L.); (F.C.)
- Key Laboratory of High Temperature Electromagnetic Materials and Structure of MOE, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Fu Chen
- School of Information Science and Engineering, Engineering Research Center for Metallurgical Automation and Detecting Technology Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China; (Y.S.); (B.C.); (H.L.); (F.C.)
- Key Laboratory of High Temperature Electromagnetic Materials and Structure of MOE, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Xiangcheng Li
- School of Physics and Electronic Information Engineering, Hubei Engineering University, Xiaogan 432000, China;
- Key Laboratory of High Temperature Electromagnetic Materials and Structure of MOE, Wuhan University of Science and Technology, Wuhan 430081, China
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
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Shui B, Yi Y, Ma C, Yi Z, Li G, Zeng L, Zeng Q, Wu P, Yi Y. Tunable bandwidth terahertz perfect absorption device based on vanadium dioxide phase transition control. Dalton Trans 2024; 53:10618-10625. [PMID: 38857028 DOI: 10.1039/d4dt01158a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Utilizing the phase transition principle of VO2, this paper presents a tunable ultra-wideband terahertz perfect absorption device with simple structure and tunability. The proposed broadband terahertz perfect absorption device is a three-layer structure with a metal reflective layer, a silicon dioxide dielectric layer and a VO2 layer from bottom to top. It was found that the terahertz perfect absorption device's absorption could be dynamically adjusted from 1.2% to 99.9% when changing from an insulated to a metallic state. With the VO2 in the metallic state, the terahertz perfect absorption device has an absorption efficiency of more than 90% in 4.00 to 10.08 THz's ultra-broadband range and near-perfect absorption is achieved in the ranges of 4.71 THz to 5.16 THz and 7.74 THz to 8.06 THz. To explain the working principle of this terahertz perfect absorption device, this paper utilizes wave interference's principle, theory of impedance matching and electric field analysis. Compared to previously reported terahertz metamaterial devices, the vanadium dioxide device proposed in this paper is significantly optimized in terms of tunable range and absorption bandwidth. In addition, the terahertz perfect absorption device is polarization insensitive and maintains good absorptivity over a wide-angle incidence range. This tunable ultra-wideband terahertz perfect absorption device could have applications in the fields of modulation, stealth devices, and thermal emission devices.
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Affiliation(s)
- Bin Shui
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Yingting Yi
- College of Physics, Central South University, Changsha 410083, China
| | - Can Ma
- Department of Oncology, Sichuan Science City Hospital, Mianyang, Sichuan Province 621000, China
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China.
- Department of Oncology, Sichuan Science City Hospital, Mianyang, Sichuan Province 621000, China
- School of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
| | - Gongfa Li
- Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of science and Technology, Wuhan 430081, China
| | - Liangcai Zeng
- Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of science and Technology, Wuhan 430081, China
| | - Qingdong Zeng
- School of Physics and Electronic-information Engineering, Hubei Engineering University, Xiaogan 432000, China
| | - Pinghui Wu
- Office of Science & Technology, Quanzhou Normal University, Quanzhou 362000, China
| | - Yougen Yi
- College of Physics, Central South University, Changsha 410083, China
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4
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Hu J, Liang Z, Zhou P, Liu L, Hu G, Du P, Ye M. Integrated optical rotation detection scheme for chip-scale atomic magnetometer empowered by silicon-rich SiNx metalens. OPTICS LETTERS 2024; 49:3364-3367. [PMID: 38875621 DOI: 10.1364/ol.527932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Accepted: 05/20/2024] [Indexed: 06/16/2024]
Abstract
High-performance atomic magnetometers (AMs) rely on the measurement of optical rotation, which requires a set of bulky polarization optics that limit their applications in scenarios where portability and compactness are necessary. In this study, a miniaturized AM is constructed based on a cubic 87Rb vapor cell and monolithic metalens, which provides an integrated scheme to achieve optical rotation detection induced by the circular birefringence of polarized atoms. The designed metalens achieves polarization splitting with deflection angles of ±10∘ and focusing with efficiencies of approximately 30% for orthogonal linear polarizations. The sensitivity of our compact device is ∼30 fT/Hz1/2 with a dynamic range of around ±1.45 nT. We envision that the presented approach paves the way for the chip integration of emerging atomic devices, which are in demand for applications such as biomagnetic imaging and portable atomic gyroscopes.
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Ren L, Yang X, Huang S, Zhong Z, Peng J, Ye L, Hou Y, Zhang B. Towards high-performance polarimeters with large-area uniform chiral shells: a comparative study on the polarization detection precision enabled by the Mueller matrix and deep learning algorithm. OPTICS EXPRESS 2024; 32:16414-16425. [PMID: 38859268 DOI: 10.1364/oe.521432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 04/05/2024] [Indexed: 06/12/2024]
Abstract
Polarization detection and imaging technologies have attracted significant attention for their extensive applications in remote sensing, biological diagnosis, and beyond. However, previously reported polarimeters heavily relied on polarization-sensitive materials and pre- established mapping relationships between the Stokes parameters and detected light intensities. This dependence, along with fabrication and detection errors, severely constrain the working waveband and detection precision. In this work, we demonstrated a highly precise, stable, and broadband full-Stokes polarimeter based on large-area uniform chiral shells and a post-established mapping relationship. By precisely controlling the geometry through the deposition of Ag on a large-area microsphere monolayer with a uniform lattice, the optical chirality and anisotropy of chiral shells can reach about 0.15 (circular dichroism, CD) and 1.7, respectively. The post-established mapping relationship between the Stokes parameters and detected light intensities is established through training a deep learning algorithm (DLA) or fitting the derived mapping-relationship formula based on the Mueller matrix theory with a large dataset collected from our home-built polarization system. For the detection precision with DLA, the mean squared errors (MSEs) at 710 nm can reach 0.10% (S1), 0.41% (S2), and 0.24% (S3), while for the Mueller matrix theory, the corresponding values are 0.14% (S1), 0.46% (S2), and 0.48% (S3). The in-depth comparative studies indicate that the DLA outperforms the Mueller matrix theory in terms of detection precision and robustness, especially for weak illumination, small optical anisotropy and chirality. The averaged MSEs over a broad waveband ranging from 500 nm to 750 nm are 0.16% (S1), 0.46% (S2), and 0.61% (S3), which are significantly smaller than those derived from the Mueller matrix theory (0.45% (S1), 1% (S2), and 39.8% (S3)). The optical properties of chiral shells, the theory and DLA enabled mapping-relationships, the combination modes of chiral shells, and the MSE spectra have been systematically investigated.
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Deng ZL, Hu MX, Qiu S, Wu X, Overvig A, Li X, Alù A. Poincaré sphere trajectory encoding metasurfaces based on generalized Malus' law. Nat Commun 2024; 15:2380. [PMID: 38493161 PMCID: PMC10944530 DOI: 10.1038/s41467-024-46758-y] [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: 10/05/2023] [Accepted: 03/08/2024] [Indexed: 03/18/2024] Open
Abstract
As a fundamental property of light, polarization serves as an excellent information encoding carrier, playing significant roles in many optical applications, including liquid crystal displays, polarization imaging, optical computation and encryption. However, conventional polarization information encoding schemes based on Malus' law usually consider 1D polarization projections on a linear basis, implying that their encoding flexibility is largely limited. Here, we propose a Poincaré sphere (PS) trajectory encoding approach with metasurfaces that leverages a generalized form of Malus' law governing universal 2D projections between arbitrary elliptical polarization pairs spanning the entire PS. Arbitrary polarization encodings are realized by engineering PS trajectories governed by either arbitrary analytic functions or aligned modulation grids of interest, leading to versatile polarization image transformation functionalities, including histogram stretching, thresholding and image encryption within non-orthogonal PS loci. Our work significantly expands the encoding dimensionality of polarization information, unveiling new opportunities for metasurfaces in polarization optics for both quantum and classical regimes.
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Affiliation(s)
- Zi-Lan Deng
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou, 510632, China.
| | - Meng-Xia Hu
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou, 510632, China
| | | | | | - Adam Overvig
- Photonics Initiative, Advanced Science Research Center, City University of New York, New York, NY, 10031, USA
| | - Xiangping Li
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou, 510632, China.
| | - Andrea Alù
- Photonics Initiative, Advanced Science Research Center, City University of New York, New York, NY, 10031, USA.
- Physics Program, Graduate Center, City University of New York, New York, NY, 10016, USA.
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Wang S, Hu T, Wang S, Wei Y, Mei Z, Yan B, Zhou W, Yang Z, Zheng J, Peng Y, Zhao M. Full Stokes polarimetry based on an inverse-designed multi-foci metalens. OPTICS LETTERS 2024; 49:1595-1598. [PMID: 38489459 DOI: 10.1364/ol.516135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/23/2024] [Indexed: 03/17/2024]
Abstract
In the realm of metasurface-based polarimetry, well-known for its remarkable compactness and integration capabilities, previous attempts have been hindered by limitations such as the restricted choices of target polarization states and the inefficient focusing of light. To address these problems, this study introduces and harnesses a novel, to our knowledge, forward-solving model, grounded in the equivalence principle and dyadic Green's function, to inversely optimize the vectorial focusing patterns of metalenses. Leveraging this methodology, we develop and experimentally validate a single multi-foci metalens-based polarimeter, capable of simultaneously separating and concentrating four distinct elliptical polarization states at a wavelength of 10.6 µm. Rigorous experimental evaluations, involving the assessment of 18 scalar polarized beams, reveal an average error of 5.92% and a high contrast ratio of 0.92, which demonstrates the efficacy of the polarimeter. The results underscore the potential of our system in diverse sectors, including military defense, healthcare, and autonomous vehicle technology.
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8
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Deng M, Cotrufo M, Wang J, Dong J, Ruan Z, Alù A, Chen L. Broadband angular spectrum differentiation using dielectric metasurfaces. Nat Commun 2024; 15:2237. [PMID: 38472224 DOI: 10.1038/s41467-024-46537-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 02/29/2024] [Indexed: 03/14/2024] Open
Abstract
Signal processing is of critical importance for various science and technology fields. Analog optical processing can provide an effective solution to perform large-scale and real-time data processing, superior to its digital counterparts, which have the disadvantages of low operation speed and large energy consumption. As an important branch of modern optics, Fourier optics exhibits great potential for analog optical image processing, for instance for edge detection. While these operations have been commonly explored to manipulate the spatial content of an image, mathematical operations that act directly over the angular spectrum of an image have not been pursued. Here, we demonstrate manipulation of the angular spectrum of an image, and in particular its differentiation, using dielectric metasurfaces operating across the whole visible spectrum. We experimentally show that this technique can be used to enhance desired portions of the angular spectrum of an image. Our approach can be extended to develop more general angular spectrum analog meta-processors, and may open opportunities for optical analog data processing and biological imaging.
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Affiliation(s)
- Ming Deng
- Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Michele Cotrufo
- Photonics Initiative, Advanced Science Research Center, City University of New York, New York, NY, 10031, USA
- The Institute of Optics, University of Rochester, Rochester, NY, 14627, USA
| | - Jian Wang
- Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jianji Dong
- Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Zhichao Ruan
- School of Physics, Zhejiang Province Key Laboratory of Quantum Technology and Device, and State Key Laboratory for Extreme Photonics and Instrumentation, Zhejiang University, Hangzhou, 310027, China
| | - Andrea Alù
- Photonics Initiative, Advanced Science Research Center, City University of New York, New York, NY, 10031, USA.
| | - Lin Chen
- Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China.
- Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen, 518063, China.
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9
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Chang Q, Ji J, Chen K, Wu W, Ma Y. Transparent and Ultra-Thin Flexible Checkerboard Metasurface for Radar-Infrared Bi-Stealth. SENSORS (BASEL, SWITZERLAND) 2024; 24:1531. [PMID: 38475067 DOI: 10.3390/s24051531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024]
Abstract
This paper proposed a single-layer checkerboard metasurface with simultaneous wideband radar cross-section (RCS) reduction characteristics and low infrared (IR) emissivity. The metasurface consists of an indium tin oxide (ITO)-patterned film, a polyethylene terephthalate (PET) substrate and an ITO backplane from the top downwards, with a total ultra-thin thickness of 1.6 mm. This design also allows the metasurface to have good optical transparency and flexibility. Based on phase cancellation and absorption, the metasurface can achieve a wideband RCS reduction of 10 dB from 10.6 to 19.4 GHz under normal incidence. When the metasurface is slightly cylindrically curved, an RCS reduction of approximately 10 dB can still be achieved from 11 to 19 GHz. The polarization and angular stability of the metasurface have also been verified. The filling rate of the top ITO-patterned film is 0.81, which makes the metasurface have a low theoretical IR emissivity of 0.24. Both simulation and experimental results have verified the excellent characteristics of the proposed checkerboard metasurface, demonstrating its great potential application in radar-IR bi-stealth.
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Affiliation(s)
- Qi Chang
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
| | - Jinzu Ji
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
| | - Ke Chen
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
| | - Wenxing Wu
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
| | - Yunpeng Ma
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
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Rong C, Cai B, Cheng Y, Chen F, Luo H, Li X. Dual-band terahertz chiral metasurface absorber with enhanced circular dichroism based on temperature-tunable InSb for sensing applications. Phys Chem Chem Phys 2024; 26:5579-5588. [PMID: 38284318 DOI: 10.1039/d3cp05528k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
Circular dichroism (CD) in terahertz (THz) regions has been widely used in biomonitoring, analytical chemistry, communication sensing, and other fields. Herein, we present a simple design for a dual-band THz chiral metasurface absorber (CMA) with a stronger CD effect based on temperature-tunable InSb for enhanced sensing applications. The proposed dual-band CMA consisted of a periodic array of the evolved C-shaped InSb adhered to a copper substrate. The designed CMA at 305 K achieved a right-handed circular polarization (RCP)-selective absorbance of 98.86% and 97.43% at 1.65 THz and 1.89 THz, respectively, and left-handed circular polarization (LCP) absorbance of 9.98% and 22.46%, respectively, and exhibited stronger CD values of 0.89 and 0.75. In addition, the CD properties of the designed CMA can be adjusted by changing the geometrical parameters of the unit-cell structure. The simulated electric field and power follow distributions indicate that this dual-band chiral-selective absorption of the designed CMA is due to the different plasma resonance mode excitations for the incident circular polarization (CP) wave. In addition, the CD properties of the designed CMA can be adjusted by changing the geometrical parameters of the unit-cell structure. Furthermore, CD spectra can be dynamically adjusted by varying the outside temperature and refraction index (RI) of the filled analytes. The designed dual-band CMA can function as a high-performance temperature sensor with sensitivities of 4.68 GHz K-1 and 5.52 GHz K-1 and also as an RI sensor with sensitivities of 1080 GHz RIU-1 and 860 GHz RIU-1, respectively. Our proposed tunable dual-band CMA with its exquisite performance has the potential to be widely applied in diverse areas such as detection, sensing, and other related optoelectronic fields.
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Affiliation(s)
- Chenguang Rong
- School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China.
| | - Bin Cai
- School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China.
- Engineering Research Center for Metallurgical Automation and Detecting Technology Ministry of Education, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Yongzhi Cheng
- School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China.
- Key Laboratory of High Temperature Electromagnetic Materials and Structure of MOE, Wuhan, 430081, P. R. China
- Hubei Longzhong Laboratory, Xiangyang, 441000, P. R. China
- Engineering Research Center for Metallurgical Automation and Detecting Technology Ministry of Education, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Fu Chen
- School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China.
- Key Laboratory of High Temperature Electromagnetic Materials and Structure of MOE, Wuhan, 430081, P. R. China
- Hubei Longzhong Laboratory, Xiangyang, 441000, P. R. China
- Engineering Research Center for Metallurgical Automation and Detecting Technology Ministry of Education, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Hui Luo
- School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China.
- Key Laboratory of High Temperature Electromagnetic Materials and Structure of MOE, Wuhan, 430081, P. R. China
- Hubei Longzhong Laboratory, Xiangyang, 441000, P. R. China
- Engineering Research Center for Metallurgical Automation and Detecting Technology Ministry of Education, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Xiangcheng Li
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China.
- Key Laboratory of High Temperature Electromagnetic Materials and Structure of MOE, Wuhan, 430081, P. R. China
- Hubei Longzhong Laboratory, Xiangyang, 441000, P. R. China
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11
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Fan B, Tang H, Wu P, Qiu Y, Jiang L, Lin L, Su J, Zhou B, Pan M. Actively Tunable "Single Peak/Broadband" Absorbent, Highly Sensitive Terahertz Smart Device Based on VO 2. MICROMACHINES 2024; 15:208. [PMID: 38398936 PMCID: PMC10890599 DOI: 10.3390/mi15020208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/26/2024] [Accepted: 01/26/2024] [Indexed: 02/25/2024]
Abstract
In recent years, the development of terahertz (THz) technology has attracted significant attention. Various tunable devices for THz waves (0.1 THz-10 THz) have been proposed, including devices that modulate the amplitude, polarization, phase, and absorption. Traditional metal materials are often faced with the problem of non-adjustment, so the designed terahertz devices play a single role and do not have multiple uses, which greatly limits their development. As an excellent phase change material, VO2's properties can be transformed by external temperature stimulation, which provides new inspiration for the development of terahertz devices. To address these issues, this study innovatively combines metamaterials with phase change materials, leveraging their design flexibility and temperature-induced phase transition characteristics. We have designed a THz intelligent absorber that not only enables flexible switching between multiple functionalities but also achieves precise performance tuning through temperature stimulation. Furthermore, we have taken into consideration factors such as the polarization mode, environmental temperature, structural parameters, and incident angle, ensuring the device's process tolerance and environmental adaptability. Additionally, by exploiting the principle of localized surface plasmon resonance (LSPR) accompanied by local field enhancement, we have monitored and analyzed the resonant process through electric field characterization. In summary, the innovative approach and superior performance of this structure provide broader insights and methods for THz device design, contributing to its theoretical research value. Moreover, the proposed absorber holds potential for practical applications in electromagnetic invisibility, shielding, modulation, and detection scenarios.
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Affiliation(s)
- Baodian Fan
- Key Laboratory of Green Perovskites Application of Fujian Provincial Universities, Fujian Jiangxia University, Fuzhou 350108, China; (B.F.); (Y.Q.); (L.J.); (L.L.)
| | - Hao Tang
- Key Laboratory of Information Functional Material for Fujian Higher Education, College of Physics and Information Engineering, Quanzhou Normal University, Quanzhou 362000, China; (H.T.); (P.W.); (J.S.); (B.Z.)
| | - Pinghui Wu
- Key Laboratory of Information Functional Material for Fujian Higher Education, College of Physics and Information Engineering, Quanzhou Normal University, Quanzhou 362000, China; (H.T.); (P.W.); (J.S.); (B.Z.)
| | - Yu Qiu
- Key Laboratory of Green Perovskites Application of Fujian Provincial Universities, Fujian Jiangxia University, Fuzhou 350108, China; (B.F.); (Y.Q.); (L.J.); (L.L.)
| | - Linqin Jiang
- Key Laboratory of Green Perovskites Application of Fujian Provincial Universities, Fujian Jiangxia University, Fuzhou 350108, China; (B.F.); (Y.Q.); (L.J.); (L.L.)
| | - Lingyan Lin
- Key Laboratory of Green Perovskites Application of Fujian Provincial Universities, Fujian Jiangxia University, Fuzhou 350108, China; (B.F.); (Y.Q.); (L.J.); (L.L.)
| | - Jianzhi Su
- Key Laboratory of Information Functional Material for Fujian Higher Education, College of Physics and Information Engineering, Quanzhou Normal University, Quanzhou 362000, China; (H.T.); (P.W.); (J.S.); (B.Z.)
| | - Bomeng Zhou
- Key Laboratory of Information Functional Material for Fujian Higher Education, College of Physics and Information Engineering, Quanzhou Normal University, Quanzhou 362000, China; (H.T.); (P.W.); (J.S.); (B.Z.)
| | - Miao Pan
- Key Laboratory of Information Functional Material for Fujian Higher Education, College of Physics and Information Engineering, Quanzhou Normal University, Quanzhou 362000, China; (H.T.); (P.W.); (J.S.); (B.Z.)
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