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A novel method for designing crosstalk-free achromatic full Stokes imaging polarimeter

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Opto-Electronic Advances 2023年第8期6卷 1-3页

作者： jinghua teng Institute of Materials Research&Engineering Agency for ScienceTechnology and Research(A*STAR)2 Fusionopolis WaySingapore 138634Singapore

Metasurface-based polarimetry techniques have attracted lots of interests and been extensively studied in the past years,but are still hampered by narrow operating bandwidth and large ***,Xian-Gang Luo's group proposed a new method of polarization-dependent phase optimization for the design of crosstalk-free,broadband achromatic,and full Stokes imaging polarimeter,which offers a promising platform for a wide range of applications including bio-photonics and integrated optics.

关键词： polar chromatic method

Built-in electric field influence on impurity-free vacancy disordering of InGaAs/InP quantum well structure

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Chinese Science Bulletin 2010年第14期55卷 1363-1366页

作者： AN YuPeng MEI Ting teng jinghua XU ChengDong WANG YiDing State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun 130012 China School of Electrical and Electronic Engineering Nanyang Technological University Singapore 639798 Singapore Institute of Materials Research and Engineering 3 Research Link Singapore 117602 Singapore

Built-in electric field may enhance or retard the impurity-free vacancy disordering (IFVD) during rapid thermal annealing (RTP) by imposing a drift on charged point defects. Built-in electric field is at the interface between dielectric layer and top layer of the structure. Subsequent rapid thermal annealing leads to different intermixing results due to different field directions on InP cap layers in different doping types. Experimental results also show different influences of the built-in field on the two sublattices largely due to different charge numbers of point defects.

关键词：内建电场井身结构 InGaAs 内置杂质无序 InP 快速热退火

Design and fabrication of broadband ultralow reflectivity black Si surfaces by laser micro/nanoprocessing

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Light(Science & Applications) 2014年第1期3卷 147-154页

作者： Jing Yang Fangfang Luo Tsung Sheng Kao Xiong Li Ghim Wei Ho jinghua teng Xiangang Luo Minghui Hong Department of Electrical and Computer Engineering National University of SingaporeSingapore 117576Singapore Institute of Materials Research and Engineering Agency for ScienceTechnology and ResearchSingapore 117602Singapore NUS Environmental Research Institute National University of SingaporeSingapore 117411Singapore State Key Laboratory of Optical Technologies for Microfabrication Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209China

Light collection efficiency is an important factor that affects the performance of many optical and optoelectronic *** these devices,the high reflectivity of interfaces can hinder efficient light *** minimize unwanted reflection,anti-reflection surfaces can be fabricated by micro/*** this paper,we investigate the fabrication of broadband anti-reflection Si surfaces by laser micro/*** direct writing is applied to create microstructures on Si surfaces that reduce light reflection by light *** addition,laser interference lithography and metal assisted chemical etching are adopted to fabricate the Si nanowire *** anti-reflection performance is greatly improved by the high aspect ratio subwavelength structures,which create gradients of refractive index from the ambient air to the ***,by decoration of the Si nanowires with metallic nanoparticles,surface plasmon resonance can be used to further control the broadband reflections,reducing the reflection to below 1.0%across from 300 to 1200 *** average reflection of 0.8%is achieved.

关键词： anti-reflection broadband laser micro/nanoprocessing surface plasmons

Room-temperature phonon-coupled single-photon emission in hexagonal boron nitride

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Science China(Physics,Mechanics & Astronomy) 2024年第5期67卷 109-114页

作者： Jia-Min Lai Qing-Hai Tan Feilong Song Haonan Chang Yanpei Lv Xue-Lu Liu jinghua teng Weibo Gao Ping-Heng Tan Jun Zhang State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing100083China Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education&Research Institute of Materials Science Shanxi Normal UniversityTaiyuan 030000China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore 637371Singapore Institute of Materials Research and Engineering(IMRE) Agency for ScienceTechnology and Research(A*STAR)Singapore 138634Singapore

Photon-lattice(phonon)coupling is fundamental to light-matter interaction,particularly when it reaches the quantum limit of the phonon-coupled single-photon emission,which holds great potential for quantum manipulation and quantum information ***,we report single defect state-phonon coupling in hexagonal boron nitride(h BN)at room *** ultrabroad spectrum of single-photon emissions can be achieved by selecting the excitation *** photoluminescence excitation spectroscopy,we observe single-phonon-assisted resonance-enhanced single-photon emission,along with multiple phonon replicas that herald the creation of phonon Fock *** also develop a transition model to gain insight into the physical process behind the single defect state-phonon *** work sets the stage for manipulating electron-phonon coupling state with single quantum-level precision at room temperature.

关键词： temperature phonon hexagonal

High Q-factor controllable phononic modes in hybrid phononic–dielectric structures

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Advanced Photonics 2019年第2期1卷 41-45页

作者： Bo Qiang Alexander M.Dubrovkin Harish N.S.Krishnamoorthy Qian Wang Cesare Soci Ying Zhang jinghua teng Qi Jie Wang Nanyang Technological University Centre for Disruptive Photonic TechnologiesThe Photonic InstituteSchool of Physical and Mathematical SciencesSingapore Nanyang Technological University Centre for OptoElectronics and BiophotonicsSchool of Electrical and Electronic EngineeringSingapore Agency for Science Technology and ResearchInstitute of Materials Research and EngineeringSingapore Agency for Science Technology and ResearchInstitute of Manufacturing TechnologySingapore

Phonon polariton resonances in the mid-infrared spectral range demonstrate properties superior to noble metal-based plasmonics,owing to smaller dissipative loss and better field ***,a conventional way to excite the localized phonon resonance involves ion etching,which reduces the attainable quality factors(Q-factors)of the *** show that by introducing a deep subwavelength layer of dielectric gratings on a phononic substrate,localized dipolar resonance and higher order modes with high Q-factors 96 and 195,respectively,can be *** further demonstrate,via experiments and simulations,that the resonant wavelength and field confinement can be controlled by coupling the localized hybrid mode with propagating surface *** also observed for the first time the coupling between a localized dipolar mode and a propagating higher-order surface phonon-polariton *** results will be useful in designing on-chip,low-loss,and highly integrated phononic devices in the infrared spectral domain.

关键词： hybrid resonance high Q-factor phonon resonance mode splitting

Two-dimensional materials for tunable and nonlinear metaoptics

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Advanced Photonics 2024年第3期6卷 16-34页

作者： Zeng Wang Kandammathe Valiyaveedu Sreekanth Meng Zhao Jinpeng Nong Yincheng Liu jinghua teng Agency for Science Technology and Research(A^(*)STAR)Institute of Materials Research and Engineering(IMRE)Singapore

Metaoptics formed by ultrathin and planar building blocks enable compact and efficient optical devices that manipulate light at the *** development of tunable metaoptics holds the promise of miniaturized and efficient optical systems that can dynamically adapt to changing conditions or requirements,propelling innovations in fields ranging from telecommunication and imaging to quantum computing and ***-dimensional(2D)materials show strong promise in enabling tunable metaoptics due to their exceptional electronic and optical properties from the quantum confinement within the atomically thin *** this review,we discuss the recent advancements and challenges of 2D material-based tunable metaoptics in both linear and nonlinear regimes and provide an outlook for prospects in this rapidly advancing area.

关键词： metaoptics tunable metaoptics two-dimensional optoelectronics nonlinear optics excitons polaritons

Ultra-high extinction-ratio light modulation by electrically tunable metasurface using dual epsilon-near-zero resonances

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Opto-Electronic Advances 2021年第7期4卷 22-32页

作者： Arash Nemati Qian Wang Norman Soo Seng Ang Weide Wang Minghui Hong jinghua teng Institute of Materials Research and Engineering Agency for ScienceTechnology and Research(A*STAR)2 Fusionopolis WaySingapore 138634Singapore Department of Electrical and Computer Engineering National University of SingaporeEngineering Drive 3Singapore 117576Singapore

The lossy nature of indium tin oxide(ITO) at epsilon-near-zero(ENZ) wavelength is used to design an electrically tunable metasurface absorber. The metasurface unit cell is constructed of a circular resonator comprising two ITO discs and a high dielectric constant perovskite barium strontium titanate(BST) film. The ENZ wavelength in the accumulation and depletion layers of ITO discs is controlled by applying a single bias voltage. The coupling of magnetic dipole resonance with the ENZ wavelength inside the accumulation layer of ITO film causes total absorption of reflected light. The reflection amplitude can achieve ~84 d B or ~99.99% modulation depth in the operation wavelength of 820 nm at a bias voltage of-2.5 V. Moreover, the metasurface is insensitive to the polarization of the incident light due to the circular design of resonators and the symmetrical design of bias connections.

关键词： metasurface electrically tunable indium tin oxide(ITO) epsilon-near-zero(ENZ) barium strontium titanate(BST) polarization-insensitive

Application of Medical Failure Mode and Effect Analysis in Preoperative Preparation for Coronary Intervention

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Medicinal Plant 2023年第3期14卷 70-73页

作者： Li ZHANG Yan ZHAN Jinlan ZHANG jinghua teng Rong CUI Hubei University of Medicine Shiyan 442000China Shiyan Taihe Hospital(Affiliated Hospital of Hubei University of Medicine) Shiyan 442000China

[Objectives]To explore application effect of healthcare failure mode and effect analysis(HFMEA)in preoperative management of coronary intervention.[Methods]The preoperative management process of 455 patients who underwent coronary intervention surgery from January to March in 2022 was sorted out,and the failure modes and causes in the preoperative management were *** priority risk value was calculated,and the top 6 failure modes were found *** measures were formulated according to the causes of failure *** months after the implementation of the procedure,470 patients who underwent coronary intervention surgery from May to July in 2022 were selected as the intervention group,and the optimized preoperative preparation procedure by HFMEA was *** decrease of risk priority number(RPN)and RPN value of two high-risk failure modes,as well as changes in the rate of the time of taking dual-antiplatelet drugs reaching the standard,the rate of passing the dress code,the rate of timely signing of informed consent,and the rate of filling in the handover form of preoperative preparation were analyzed.[Results]The rate of the time of taking dual-antiplatelet drugs reaching the standard,the rate of passing the dress code,the rate of timely signing of informed consent,and the rate of filling in the handover form of preoperative preparation in experimental groups were higher than those of the control group,and the difference was statistically significant(P<0.05).[Conclusions]Applying HFMEA to the management of preoperative preparation process for coronary intervention can effectively improve the timeliness and qualification rate of preoperative preparation for coronary intervention,and provide guarantee for the safe and smooth implementation of coronary intervention.

关键词： HFMEA Coronary heart disease Coronary intervention Preoperative preparation Effect evaluation

Efficiency-enhanced reflective nanosieve holograms

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Chinese Optics Letters 2022年第5期20卷 48-52页

作者： Samia Osman Hamid Mohammed Dong Zhao Syed Yasir Azeem Xiaoming Goh Shawn J.Tan jinghua teng Kun Huang Department of Optics and Optical Engineering University of Science and Technology of ChinaHefei 230026China Singapore 138634Singapore

Photon nanosieves,as amplitude-type metasurfaces,have been demonstrated usually in a transmission mode for optical super-focusing,display,and holography,but the sieves with subwavelength size constrain optical transmission,thus leading to low ***,we report reflective photon nanosieves that consist of metallic meta-mirrors sitting on a trans-parent quartz *** illumination,these meta-mirrors offer the reflectance of〜50%,which is higher than the transmission of visible light through diameter-identical *** from this configuration,a meta-mirror-based reflective hologram has been demonstrated with good consistence between theoretical and experimental results over the broadband spectrum from 500 nm to 650 nm,meanwhile exhibiting total efficiency of〜7%.Additionally,if an additional high-reflectance layer is employed below these meta-mirrors,the efficiency can be enhanced further for optical anti-counterfeiting.

关键词： metasurfaces nanosieves holograms reflective mirrors