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Tailoring Light–Matter Interactions in Overcoupled Resonator for Biomolecule Recognition and Detection

Nano-Micro Letters 2025年第1期17卷 262-280页

作者： Dongxiao Li Hong Zhou Zhihao Ren Cheng Xu Chengkuo Lee Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore center for intelligent Sensors and MEMS(CISM) National University of SingaporeSingapore 117608Singapore

Plasmonic nanoantennas provide unique opportunities for precise control of light–matter coupling in surface-enhanced infrared absorption(SEIRA)spectroscopy,but most of the resonant systems realized so far suffer from the obstacles of low sensitivity,narrow bandwidth,and asymmetric Fano resonance ***,we demonstrated an overcoupled resonator with a high plasmon-molecule coupling coefficient(μ)(OC-Hμresonator)by precisely controlling the radiation loss channel,the resonator-oscillator coupling channel,and the frequency detuning *** observed a strong dependence of the sensing performance on the coupling state,and demonstrated that OC-Hμresonator has excellent sensing properties of ultra-sensitive(7.25%nm^(−1)),ultra-broadband(3–10μm),and immune asymmetric Fano *** characteristics represent a breakthrough in SEIRA technology and lay the foundation for specific recognition of biomolecules,trace detection,and protein secondary structure analysis using a single array(array size is 100×100μm^(2)).In addition,with the assistance of machine learning,mixture classification,concentration prediction and spectral reconstruction were achieved with the highest accuracy of 100%.Finally,we demonstrated the potential of OC-Hμresonator for SARS-CoV-2 *** findings will promote the wider application of SEIRA technology,while providing new ideas for other enhanced spectroscopy technologies,quantum photonics and studying light–matter interactions.

关键词： Plasmonic nanoantennas Light-matter interaction Surface-enhanced infrared absorption Overcoupled Biosensing

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Roll-to-roll printing trench-like metasurface film for radiative cooling

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Light(Science & Applications) 2023年第12期12卷 2538-2539页

作者： Yaoguang Ma State Key Laboratory of Extreme photonics and Instrumentation College of Optical Science and EngineeringInternational ResearchCenter for Advanced PhotonicsZhejiang UniversityHangzhou 310027China ZJU-Hangzhou Global Scientific and Technological Innovation center Hangzhou 311215China Jiaxing Key Laboratory of Photonic Sensing&intelligent Imaging Intelligent Optics&Photonics Research CenterJiaxing Research InstituteZhejiang UniversityJiaxing 314000China

A Roll-to-roll technology can enable the fabrication of trench-like photonic meta-structures that are strongly absorptive in the MIR region,providing a controllable optical response for diurnal radiative cooling.

关键词： trench radiative printing

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Degradation and Self-recovery of Polycrystalline Silicon TFT CMOS Inverters Under NBTI Stress

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Chinese Journal of Electronics 2019年第4期28卷 884-888页

作者： GUO Jian YU Zhinong YAN Wei SHI Dawei XUE Jianshe XUE Wei School of optics and photonics and Beijing Engineering Research Center of Mixed Reality and Advanced Display Beijing Institute of Technology

Degradation and self-recovery of polycrystalline Silicon(poly-Si) Thin film transistor(TFT) by using complementary metal oxide semiconductor(CMOS)inverter were investigated. Under DC stress, degradation mechanisms were clarified by comparing the Voltage transfer characteristics(VTC) of fresh and stressed inverters. It is determined that Negative bias temperature instability(NBTI) of p-TFT dominates the degradation of the inverter under zero bias DC stress. After removing the stress, the VTC continues to be degraded, because the interface trap-states and the grain boundary trapstates increase due to hydrogen species diffusion. It is found out that the VTC is shifted to its right side severely with negative bias stress of VIN. The NBTI of p-TFT is enhanced and the NBTI of n-TFT also plays a role on the degradation. When removing the negative bias stress, the self-recovery of NBTI of nTFT and the continuing degradation of NBTI of p-TFT become competing mechanisms, together controlling the VTC after-stress behavior. Consequently, the continuing degradation of NBTI of p-TFT is restrained by selfrecovery of NBTI of n-TFT.

关键词： Negative bias temperature instability(NBTI) Self-recovery Inverter Polycrystalline silicon Voltage transfer characteristics(VTC)

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Review of computer-generated hologram algorithms for color dynamic holographic three-dimensional display

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Light(Science & Applications) 2022年第9期11卷 1962-1978页

作者： Dapu Pi Juan Liu Yongtian Wang Beijing Engineering research center for Mixed Reality and Advanced Display School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China

Holographic three-dimensional display is an important display technique because it can provide all depth information of a real or virtual scene without any special *** recent years,with the development of computer and optoelectronic technology,computer-generated holograms have attracted extensive attention and developed as the most promising method to realize holographic ***,some bottlenecks still restrict the development of computer-generated holograms,such as heavy computation burden,low image quality,and the complicated system of color holographic *** overcome these problems,numerous algorithms have been investigated with the aim of color dynamic holographic three-dimensional *** this review,we will explain the essence of various computer-generated hologram algorithms and provide some insights for future research.

关键词： holographic dynamic overcome

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Energy‑efcient integrated silicon optical phased array

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Frontiers of Optoelectronics 2023年第3期16卷 77-100页

作者： Huaqing Qiu Yong Liu Xiansong Meng Xiaowei Guan Yunhong Ding Hao Hu DTU Electro Department of Electrical and Photonics EngineeringTechnical University of DenmarkKgs.Lyngby DK-2800Denmark Interuniversity Microelectronics center(IMEC) Kapeldreef 75Leuven 3001Belgium Jiaxing Key Laboratory of Photonic Sensing and intelligent Imaging Jiaxing 314000China intelligent optics and photonics research center Jiaxing Research InstituteZhejiang UniversityJiaxing 314000China

An optical phased array(OPA)is a promising non-mechanical technique for beam steering in solid-state light detection and ranging *** performance of the OPA largely depends on the phase shifter,which afects power consumption,insertion loss,modulation speed,and ***,for a thermo-optic phase shifter,achieving good performance in all aspects is challenging due to trade-ofs among these *** this work,we propose and demonstrate two types of energy-efcient optical phase shifters that overcome these trade-ofs and achieve a well-balanced performance in all ***,the proposed round-spiral phase shifter is robust in fabrication and fully compatible with deep ultraviolet(DUV)processes,making it an ideal building block for large-scale photonic integrated circuits(PICs).Using the high-performance phase shifter,we propose a periodic OPA with low power consumption,whose maximum electric power consumption within the feld of view is only 0.33 ***,we designed Gaussian power distribution in both the azimuthal(ψ)and polar(θ)directions and experimentally achieved a large sidelobe suppression ratio of 15.1 and 25 dB,respectively.

关键词： Optical phased array Optical phase shifter Silicon photonics Integrated optics

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Observation of dipolar transport in one-dimensional photonic lattices

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Science Bulletin 2017年第5期62卷 339-344页

作者： Camilo Cantillano Luis Morales-Inostroza Bastián Real Santiago Rojas-Rojas Aldo Delgado Alexander Szameit Rodrigo A.Vicencio Departamento de Física MSI-Nucleus on Advanced Opticsand Center for Optics and Photonics(CEFOP)Facultad de CienciasUniversidad de ChileSantiagoChile center for optics and photonics and MSI-Nucleus on Advanced optics Universidad de ConcepciónCasilla 160-C ConcepcionChile Institute for Physics University of RostockD-18059 RostockGermany

We experimentally study the transport properties of dipolar and fundamental modes on one dimensional(1D) coupled waveguide arrays. By carefully modulating a wide optical beam, we are able to effectively excite dipolar or fundamental modes to study discrete diffraction(single-site excitation) and gaussian beam propagation(multi-site excitation plus a phase gradient). We observe that dipolar modes experience a larger spreading area due to an effective larger coupling constant, which is found to be more than two times larger than the one for fundamental modes. Additionally, we study the effect of non-diagonal disorder and find that while fundamental modes are already trapped on a weakly disorder array, dipoles are still able to propagate across the system.

关键词： Photonic lattices Waveguide arrays Wave propagation Integrated optics

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High-power continuous-wave optical waveguiding in a silica micro/nanofibre

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Light(Science & Applications) 2023年第5期12卷 809-816页

作者： Jianbin Zhang Yi Kang Xin Guo Yuhang Li Keying Liu Yu Xie Hao Wu Dawei Cai Jue Gong Zhangxing Shi Yingying Jin Pan Wang Wei Fang Lei Zhang Limin Tong Interdisciplinary center for Quantum Information State Key Laboratory of Modern Optical InstrumentationCollege of Optical Science and EngineeringZhejiang University310027 HangzhouChina intelligent optics&photonics research center Jiaxing Institute of Zhejiang University314000 JiaxingChina State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentTsinghua University100084 BeijingChina research center for intelligent Sensing Zhejiang Lab311121 HangzhouChina Collaborative Innovation center of Extreme optics Shanxi University030006 TaiyuanChina

As miniature fibre-optic platforms,micro/nanofibres(MNFs)taper-drawn from silica fibres have been widely studied for applications from optical sensing,nonlinear optics to optomechanics and atom *** continuous-wave(CW)optical waveguiding is frequently adopted,so far almost all MNFs are operated in low-power region(e.g.,optics,for both scientific research and technological applications.

关键词： power waveguide pumped

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Exploring the Effectiveness of Gesture Interaction in Driver Assistance Systems via Virtual Reality

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IEEE/CAA Journal of Automatica Sinica 2022年第8期9卷 1520-1523页

作者： Tong Liu Mingwei Hu Shining Ma Yi Xiao Yue Liu Weitao Song Beijing Engineering research center of Mixed Reality and Advanced Display the School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China

Dear editor,This letter presents a user study to explore the effectiveness of gesture interaction in driver assistance system(DAS).Distracted driving is a specific form of driver inattention and distraction occurs whe... 详细信息

关键词： driving Driver editor

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Deeply learned broadband encoding stochastic hyperspectral imaging

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Light(Science & Applications) 2021年第6期10卷 969-975页

作者： Wenyi Zhang Hongya Song Xin He Longqian Huang Xiyue Zhang Junyan Zheng Weidong Shen Xiang Hao Xu Liu State Key Laboratory of Modern Optical Instrumentation College of Optical Science and TechnologyZhejiang UniversityHangzhou 310027China intelligent optics photonics research center Jiaxing Institute of Zhejiang UniversityJiaxing 314000 Zhejiang ProvineeChina

Many applications requiring both spectral and spatial information at high resolution benefit from spectral *** different technical methods have been developed and commercially available,computational spectral cameras represent a compact,lightweight,and inexpensive ***,the tradeoff between spatial and spectral resolutions,dominated by the limited data volume and environmental noise,limits the potential of these *** this study,we developed a deeply learned broadband encoding stochastic hyperspectral *** particular,using advanced artificial intelligenee in filter design and spectrum reconstruction,we achieved 7000-11,000 times faster signal processing and〜10 times improvement regarding noise *** improvements enabled us to precisely and dynamically reconstruct the spectra of the entire field of view,previously unreachable with compact computational spectral cameras.

关键词： solution. stochastic spectral

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Spatiotemporal evolution of continuous-wave field and dark soliton formation in a microcavity with normal dispersion

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Chinese Physics B 2017年第7期26卷 167-172页

作者：胡晓鸿张伟刘元山冯野张文富王擂然王屹山赵卫 State Key Laboratory of Transient optics and photonics Xi'an Institute of Optics and Precision MechanicsChinese Academy of Sciences University of Chinese Academy of Sciences Collaborative Innovation center of Extreme optics Shanxi University

Stable dark soliton and dark pulse formation in normally dispersive and red-detuned microcavities are investigated by numerically solving the normalized Lugiato-Lefever equation. The soliton essence is proved by fitting the calculated field intensity profile with the analytical formula of a dark soliton. Meanwhile, we find that a dark soliton can be generated either from the nonlinear evolution of an optical shock wave or narrowing of a locally broad dark pulse with smoother fronts. Explicit analytical expression is obtained to describe the oscillatory fronts of the optical shock wave. Furthermore,from the calculation results, we show that for smaller frequency detunings, e.g., α 3, in addition to the dark soliton formation, a single dark pulse with an oscillatory dip can also arise and propagate stably in the microcavity under proper pump detuning and pump strength combination. The existence region together with various field intensity profiles and the corresponding spectra of single dark pulse are demonstrated.

关键词： pulse propagation temporal solitons microcavities nonlinear optics

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