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Spin-decoupled metasurface for simultaneous detection of spin and orbital angular momenta via momentum transformation

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Light(Science & Applications) 2021年第4期10卷 636-647页

作者： yinghui guo Shicong Zhang Mingbo Pu Qiong He Jinjin Jin Mingfeng Xu Yaxin Zhang Ping Gao Xiangang Luo State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China School of Optoelectronics University of Chinese Academy of SciencesBeijing 100049China

With inherent orthogonality,both the spin angular momentum(SAM)and orbital angular momentum(OAM)of photons have been utilized to expand the dimensions of quantum information,optical communications,and information processing,wherein simultaneous detection of SAMs and OAMs with a single element and a single-shot measurement is highly ***,a single azimuthal-quadratic phase metasurface-based photonic momentum transformation(PMT)is illustrated and utilized for vortex *** different vortices are converted into focusing patterns with distinct azimuthal coordinates on a transverse plane through PMT,OAMs within a large mode space can be determined through a single-shot ***,spin-controlled dual-functional PMTs are proposed for simultaneous SAM and OAM sorting,which is implemented by a single spin-decoupled metasurface that merges both the geometric phase and dynamic ***,our proposed method can detect vectorial vortices with both phase and polarization singularities,as well as superimposed vortices with a certain interval *** results obtained at several wavelengths in the visible band exhibit good agreement with the numerical *** the merits of ultracompact device size,simple optical configuration,and prominent vortex recognition ability,our approach may underpin the development of integrated and high-dimensional optical and quantum systems.

关键词： momentum angular simultaneous

Misalignments among stacked layers of metamaterial terahertz absorbers

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Frontiers of Optoelectronics 2014年第1期7卷 53-58页

作者： yinghui guo Lianshan YAN Wei PAN Bin LUO Xiantao ZHANG Xiangang LUO Center for Information Photonics & Communications School of Information Science & Technology Southwest Jiaotong University Chengdu 610031 China State Key Lab of Optical Technology for Microfabrication Institute of Optics and Electronics Chinese Academy of Sciences Chengdu 610029 China

Misalignment among stacked layers of absor- bers is inevitable in practice. Adverse effects induced by this undesired factor was investigated and analyzed in this paper. The absorption responses of thin terahertz metama- terial （MM） absorber with different degree of misalign- ment were simulated by finite-difference time-domain （FDTD） method under both transverse magnetic （TM） and transverse electric （TE） polarization. Results show that slight misalignment deteriorates absorption response due to the decreased spatial resolution. The analyses are given in terms of the magnetic field distribution in the cross section. In addition, the depravation is changed with polarization, which depends on the direction of excursion.

关键词： metamaterials (MMs) terahertz absorber,misalignment subwavelength structure

High-efficiency multi-wavelength metasurface with complete independent phase control

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Chinese Optics Letters 2018年第5期16卷 7-11页

作者： Jing Yan yinghui guo Mingbo Pu Xiong Li Xiaoliang Ma Xiangang Luo State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and Electronics Chinese Academy of Sciences Chengdu 610209 China University of Chinese Academy of Sciences Beijing 100049 China

As a consequence of Kramers–Kronig relations, the wavelength-dependent behavior of the metasurface is one of the critical limitations in existing metasurface structures, which reduces the design freedom among different wavelengths. Here, we present an approach to construct a high-efficiency multi-wavelength metasurface with independent phase control by coding different wavelengths into orthogonal polarizations. As proof of the concept, two dual-band metasurfaces have been proposed and numerically demonstrated by multiple vortex beam generation in near-field and polarization multiplexing achromatic beam deflection. Furthermore, simulated results show that the proposed metasurface exhibits high transmission efficiency at both wavelengths, which may find widespread applications in subwavelength electromagnetics.

关键词： High-efficiency multi-wavelength metasurface with complete independent phase control

Inversely engineered metasurfaces for independent manipulation of transmitted and reflected light fields

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Science China(Physics,Mechanics & Astronomy) 2024年第7期67卷 97-106页

作者： Yongjian Liu Yu Luo Fei Zhang Mingbo Pu Hanlin Bao Mingfeng Xu yinghui guo Lanting Li Xiong Li Xiaoliang Ma Xiangang Luo National Key Laboratory of Optical Field Manipulation Science and Technology Chinese Academy of SciencesChengdu 610209China State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China Research Center on Vector Optical Fields Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China Tianfu Xinglong Lake Laboratory Chengdu 610299China

Independent manipulation of transmitted and reflected light fields is a key technology for the realization of multifunctional optical applications,which can be implemented based on multilayered plasmonic or supercell subwavelength ***,the former is not suitable for the optical bands,while the latter is insufficient in generating large phase ***,an adjoint-optimization-based inverse design methodology is proposed,which utilizes the polarization-selective local interference between individual meta-atoms and enables monolayer dielectric metasurfaces to decouple the wavefront of transmitted and reflected optical ***,this methodology serves to mitigate the aperiodic electromagnetic crosstalk inherent between adjacent meta-atoms,consequently leading to a significant enhancement in the performance of *** analyzed the physical mechanism of adjoint optimization and proposed the concept of phase factors,highlighting their importance in the rapid inverse design of meta-devices—an aspect often overlooked in previous *** demonstrate the feasibility and robustness of our method,we optimize monolayer metasurfaces with different initial *** devices efficiently focus and deflect x-linearly and y-linearly polarized incident light in transmission and reflection spaces,***,this methodology holds immense potential for designing multifunctional,high-performing metasurfaces that meet multiple constraints,opening up broad prospects for applications.

关键词： full-space metasurfaces adjoint optimization inverse design

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Transmission and demodulation of multi-polarization-multiplexed signals

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Chinese Science Bulletin 2014年第29期59卷 3943-3948页

作者： Zhiyu Chen Lianshan Yan Wei Pan Bin Luo yinghui guo Hengyun Jiang Anlin Yi Xiaoxia Wu Wei Li Jianguo Liu Center for Information Photonics and Communications School of Information Science and TechnologySouthwest Jiaotong University JDS Uniphase Corporation 430 N McCarthy Blvd.MilpitasCA 95035USA Institute of Semiconductors Chinese Academy of Sciences

We propose the configuration of signal multiplexing with four polarization states and investigate its transmission performance over single-mode fiber *** coherent detection and digital signal processing,a demodulation scheme for four-polarization-multiplexed(4PM)system is *** discuss the impact of crosstalk from polarization mode dispersion and polarization beam splitter misalignment on the proposed 4PM ***,the transmission distance could be doubled to*50 km by employing feedback decision equalizers.

关键词：数字信号处理偏振复用传输性能解调 PM系统偏振分束器偏振模色散光纤链路

All‐metallic wide‐angle metasurfaces for multifunctional polarization manipulation

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Opto-Electronic Advances 2019年第3期2卷 19-24页

作者： Xiaoliang Ma Mingbo Pu Xiong Li yinghui guo Xiangang Luo State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and ElectronicsChinese Academy of SciencesChengdu610209China School of Optoelectronics University of Chinese Academy of SciencesBeijing 100049China

Optical camouflage is a magical capability of animals as first noticed in 1794 by Erasmus Darwin in Zoonomia,but current biomimetic camouflage strategies cannot be readily applied in complex environments involving multispectral and in particular multi-polarization *** we develop a plasmonic approach toward broadband infrared polarimetric crypsis,where the polarized thermal emission near the pseudo-Brewster angle is the main signal source and no existing polarizing camouflage technique has been discovered in *** on all-metallic subwavelength structures,an electrodynamic resistance-reduction mechanism is proposed to avoid the significant polarization-dependent infrared absorption/*** is also found that the structured metal surface presents giant extrinsic anisotropy regarding the phase shift between orthogonal polarization states,which helps to realize ultrahigh-efficiency and tunable polarization conversion in an unprecedented ***,we note that the catenary optical theory may provide a useful means to explain and predict these unusual performances.

关键词： metasurface polarization thermal radiation crypsis Brewster angle catenary opti

Generating dense and super-resolution ISAR image by combining bandwidth extrapolation and compressive sensing

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Science China(Information Sciences) 2011年第10期54卷 2158-2169页

作者： QUAN yinghui ,ZHANG Lei,guo Rui,XING MengDao & BAO Zheng National Key Lab for Radar Signal Processing,Xidian University,Xi’an 710071,China National Key Lab for Radar Signal Processing Xidian University Xi’an China

Recent developing compressive sensing (CS) theory indicates that it is possible to obtain precise recovery of a sparse signal from very limited measurements,which provides a new way for data acquisition and signal processing as nature signals usually involve some degree of *** this paper,we present an algorithm for inversed synthetic aperture radar (ISAR) imaging with super resolution by combining CS and bandwidth extrapolation (BWE) *** ISAR imaging,the backscattering field of target is usually contributed by a few strong scattering centers,whose number is much less than that of image ***,CS is intuitively suitable for constructing super resolution ISAR *** to CS theory,the number of extracted dominating scatterers relies on the signal length,which indicates that if only limited data is available,it is difficult to generate dense ISAR image robustly by CS,and some signal components tend to *** soften this constraint,BWE is combined with CS imaging to increase the degree of freedom of signal while preserving its coherence.A refined CS-based formation for ISAR image-resolution enhancement is then *** real and simulated data experiments are performed to evaluate the proposed approach,and an example of using this technique demonstrates the enhanced image resolution in application of maneuvering target imaging.

关键词： inverse synthetic aperture radar (ISAR) compressive sensing (CS) bandwidth extrapolation (BWE) super resolution

High-fidelity mode scaling via topologicaloptimized on-chip metalens for compact photonic interconnection

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Light(Advanced Manufacturing) 2023年第3期4卷 222-232页

作者： Yingli Ha Lijun Wang yinghui guo Mingbo Pu Fang Zou Xiong Li Yulong Fan Xiaoliang Ma Xiangang Luo State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China Research Center on Vector Optical Fields Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China School of Optoelectronics University of Chinese Academy of SciencesBeijing 100049China Tianfu Xinglong Lake Laboratory Chengdu 610299China

Photonic integrated circuits(PICs)have attracted significant interest in communication,computation,and biomedical ***,most rely on highly integrated PICs devices,which require a low-loss and high-integration guided wave *** to the various dimensions of different integrated photonic devices,their interconnections typically require waveguide *** a waveguide taper can overcome the width mismatch of different devices,its inherent tapering width typically results in a long length,which fundamentally limits the efficient interconnection between devices with a high scaling ratio over a short ***,we proposed a highly integrated on-chip metalens that enables optical interconnections between devices with high width-scaling ratios by embedding a free-form metasurface in a silicon-on-insulator *** special geometric features endow the designed metalens with high coupling efficiency and high *** device has a footprint of only 2.35μm in the longitudinal direction and numerical aperture of 2.03,enabling beam focusing and collimation of less than 10μm between devices with width-scaling ratio of *** the fundamental transverse electric field(TE0)mode,the relative transmittance is as high as 96%for forward incidence(from wide to narrow waveguides),whereas the metalens can realize wavefront shaping for backward incidence,which can be used in optical phase *** study provides new ideas for optical interconnect design and wavefront shaping in high-integration *** design approach has potential applications in directional radiators,LiDAR,on-chip optical information processing,analogue computing,and imaging.

关键词： On-chip metalens Inverse design Phase collimate Photonic integrated circuits

Tailoring active color rendering and multiband photodetection in a vanadium-dioxide-based metamaterial absorber

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Photonics Research 2018年第6期6卷 492-497页

作者： SHICHAO SONG XIAOLIANG MA MINGBO PU XIONG LI yinghui guo PING GAO XIANGANG LUO State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering Institute of Optics and ElectronicsChinese Academy of Sciences Chengdu 610209 China University of Chinese Academy of Sciences Beijing 100049 China

Metamaterials have demonstrated exotic electromagnetic properties, which offer a good platform for realizing light absorption, photodetection, filtering, and so on. However, broadband multifunctional metamaterial absorbers are restricted in cascaded structures. Here, broadband multifunctional properties were realized by introducing vanadium dioxide into a metamaterial absorber. Through the modified design and highly efficient utilization of multiple resonant modes, both plasmonic tunable color filters and near-infrared photodetectors can be simultaneously achieved by this construction. Meanwhile, active color and a photodetection band in the near-infrared range can become tunable with the insulating-metallic transition of vanadium dioxide. Thus, the variations of rendering colors could correspondingly indicate shifts of the near-infrared photodetection bands. This method theoretically confirms the feasibility of designing multifunctional devices via a terial absorber, which holds great promise for future versatile utilization of vanadium-dioxide-based metamamultiple physical mechanisms to achieve numerous functionalities in a simple nanostructure or device.

关键词： Surface plasmons Metamaterials Color Photodetectors