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Coherent suppression of backscattering in optical microresonators

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Light(Science & Applications) 2020年第1期9卷 16-23页

作者： Andreas O.Svela Jonathan M.Silver Leonardo Del Bino Shuangyou Zhang Michael T.M.Woodley Michael R.Vanner Pascal Del’haye National Physical Laboratory Teddington TW110LWUK Blackett Laboratory Imperial College LondonLondon SW72AZUK Clarendon Laboratory University of OxfordOxford OX13PUUK City University of London London EC1V 0HBUK Max Planck Institute for the Science of Light StaudtstaBe 291058 ErlangenGermany Heriot-Watt University Edinburgh EH144ASUK Friedrich Alexander University Erlangen-Nuremberg 91058 ErlangenGermany

As light propagates along a waveguide,a fraction of the field can be reflected by Rayleigh *** high-qualityfactor whispering-gallery-mode microresonators,this intrinsic backscattering is primarily caused by either surface or bulk material *** several types of microresonator-based experiments and applications,minimal backscattering in the cavity is of critical importance,and thus,the ability to suppress backscattering is *** demonstrate that the introduction of an additional scatterer into the near field of a high-quality-factor microresonator can coherently suppress the amount of backscattering in the microresonator by more than 30 *** method relies on controlling the scatterer position such that the intrinsic and scatterer-induced backpropagating fields destructively *** technique is useful in microresonator applications where backscattering is currently limiting the performance of devices,such as ring-laser gyroscopes and dual frequency combs,which both suffer from injection ***,these findings are of interest for integrated photonic circuits in which back reflections could negatively impact the stability of laser sources or other components.

关键词： resonator waveguide scatter

Almitrine for COVID-19 critically ill patients – a vascular therapy for a pulmonary vascular disease: Three case reports

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World Journal of Clinical Cases 2021年第14期9卷 3385-3393页

作者： Pierre Huette Osama Abou Arab Vincent Jounieaux Mathieu guilbart Mohamed Belhout guillaume haye HervéDupont Christophe Beyls Yazine Mahjoub Department of Anaesthesia and Critical Care Amiens Hospital UniversityAmiens 80000France Department of Respiratory Medicine Amiens Hospital UniversityAmiens 80000France Department of Pharmacy Amiens Hospital UniversityAmiens 80000France

BACkgROUND Several reports with clinical,histological and imaging data have observed the involvement of lung vascular function to explain the severe hypoxemia in coronavirus disease 2019(COVID-19)*** has been hypothesized that an increased pulmonary blood flow associated with an impairment of hypoxic pulmonary vasoconstriction is responsible for an intrapulmonary ***-19 may lead to refractory hypoxemia(PaO_(2)/FiO_(2) ratio below 100 mmHg)despite mechanical ventilation and prone *** hypothesized that the use of a pulmonary vasoconstrictor may help decrease the shunt and thus enhance *** SUMMARY We report our experience with three patients with refractory hypoxemia treated with almitrine to enhance *** dose almitrine(Vectarion®;Servier,Suresnes,France)was started at an infusion rate of 4μg×kg/min on a central *** PaO_(2)/FiO_(2) ratio and total respiratory system compliance during almitrine infusion were *** the three patients,the PaO_(2)/FiO_(2) ratio time-course showed a dramatic increase whereas total respiratory system compliance was *** three patients were discharged from the intensive care *** intensive care unit length of stay for patient 1,patient 2 and patient 3 was 30 d,32 d and 31 d,*** from mechanical ventilation was performed 13 d,18 d and 15 d after almitrine infusion for patient 1,2 and 3,*** found no deleterious effects on the right ventricular function,which was similar to previous studies on almitrine *** Almitrine may be effective and safe to enhance oxygenation in coronavirus disease 2019 *** controlled studies are required.

关键词： COVID-19 Treatment Acute vascular distress syndrome Almitrine Intensive care unit Safety Case report

Optical Microresonators feature issue introduction

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Photonics Research 2023年第12期11卷 I0001-I0003页

作者： YUN-FENg XIAO kARTIk SRINIVASAN PASCAL DEL’haye MENgJIE YU Frontiers Science Center for Nano-optoelectronics and State key Laboratory for Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China Microsystems and Nanotechnology Division Physical Measurement LaboratoryNational Institute of Standards and TechnologyGaithersburgMaryland 20899USA Max Planck Institute for the Science of Light 91058 ErlangenGermany Ming Hsieh Department of Electrical and Computer Engineering University of Southern CaliforniaLos AngelesCalifornia 90089USA

Optical microresonators,which confine light in both the spatial and time domains,have advanced various research areas benefiting from significantly enhanced light-matter interactions,including integrated microlasers,nonlinear frequency conversion,kerr frequency combs,and *** the past five years,the research interests in optical microresonators have rapidly expanded and combined with other disciplines,for example,optical chaos,non-Hermitian physics,and quantum *** cutting-edge research works have enabled the creation of optical microresonators with novel properties and capabilities.

关键词： materials chaos expanded

The Physics of granular Media

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Electromagnetically induced transparency-like effect in a lithium niobate resonator via electronic control

2004年

作者： haye Hinrichsen Dietrich E. Wolf

ISBN: (数字)9783527603626

ISBN: (纸本)9783527403738

Despite extensive empirical experience, there is both a scientific challenge and a technological need to develop an understanding of the mechanisms underlying the flow of grains. This new reference provides quick access to the current level of knowledge, containing review articles covering recent developments in the field of granular media from the viewpoints of applied, experimental, and theoretical physics. In short, a must-have for advanced researchers and specialists as well as a useful starting point for anyone entering this field. The authors represent different directions of research in the field, with their contributions covering: - Static properties - granular gases - Dense granular flow - Hydrodynamic interactions - Charged and magnetic granular matter - Computational aspects

关键词： granular materials.

来源：畅想之星图书光盘版（南... 评论

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Photonics Research 2023年第5期11卷 773-779页

作者： LIU YANg YONgYONg ZHUANg YIFAN ZHANg YAOJINg ZHANg SHUANgYOU ZHANg ZHUO XU PASCAL DEL’haye XIAOYONg WEI Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education&International Center for Dielectric ResearchSchool of Electronic Science and EngineeringFaculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China Max Planck Institute for the Science of Light 91058 ErlangenGermany

In this study,we theoretically proposed a method to achieve an electromagnetically induced transparency(EIT)-like effect in a whispering gallery mode resonator(WgMR)and experimentally validated the method in a lithium niobate(LN)*** from the electro-optic and inverse piezoelectric effects of the LN material,two modes of the LN WgMR that are close in frequency can be tuned at different tuning rates,resulting in EIT-like resonance *** varying the electric field applied to the LN WgMR,the full dynamic of the EIT-like phenomenon can be precisely *** experimental results agreed well with the calculations based on the coupled mode ***,we observed a hysteresis resulting from the photorefractive effect of *** believe our proposed method and demonstrated devices offer a way to control an EIT-like effect,which could have potential applications in light storage,quantum information processing,and enhanced sensing techniques.

关键词： resonator tuning effect

Controlled light distribution with coupled microresonator chains via kerr symmetry breaking

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Photonics Research 2024年第10期12卷 2376-2389页

作者： ALEkHYA gHOSH ARgHADEEP PAL LEWIS HILL gRAEME NCAMPBELL TOBY BI YAOJINg ZHANg ABDULLAH ALABBADI SHUANgYOU ZHANg PASCAL DEL’haye Max Planck Institute for the Science of Light D-91058 ErlangenGermany Department of Physics Friedrich Alexander University Erlangen-NurembergD-91058 ErlangenGermany Department of Physics University of StrathclydeGlasgow G40NGUK

Within optical microresonators,the kerr interaction of photons can lead to symmetry breaking of optical *** a ring resonator,this leads to the interesting effect that light preferably circulates in one direction or in one polarization *** of this effect range from chip-integrated optical diodes to nonlinear polarization controllers and optical *** this work,we study kerr-nonlinearity-induced symmetry breaking of light states in coupled resonator optical waveguides(CROWs).We discover,to our knowledge,a new type of controllable symmetry breaking that leads to emerging patterns of dark and bright resonators within the *** stationary symmetry broken states,we observe kerr-effect-induced homogeneous periodic oscillations,switching,and chaotic fluctuations of circulating powers in the *** findings are of interest for controlled multiplexing of light in photonic integrated circuits,neuromorphic computing,topological photonics,and soliton frequency combs in coupled resonators.

关键词： resonator polarization symmetry

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与镜质体反射率有关的砂岩孔隙度演化

国外地质（成都） 1993年第1期 29-35页

作者： haye.,JB 叶素娟

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电子驱动系统的节能潜力

现代制造 2008年第23期 32-34页

作者： Ralf de la haye

近几年来,很多不同的经济领域部对节能设备的应用问题进行了广泛的讨论,并且提出了不少的技术解决方案。这些方案一方面涉及到零部件的优化,另一方面涉及到系统分析的复杂性和优化标准。本文主要介绍了工业生产领域中一种可行的解决方案。

关键词：节能潜力驱动系统电子技术解决方案优化标准节能设备系统分析零部件

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中非农村土地流转市场规范对比研究

中非农村土地流转市场规范对比研究

作者：吉奥姆(AkOC haye gUILLAUME) 华南农业大学

学位级别：硕士

非洲新一轮的“海外圈地运动”愈演愈烈,严重威胁非洲人民的粮食安全。本文在系统梳理国内外农村土地流转市场的相关研究基础上,基于制度变迁、土地产权、土地交易费用论、地租地价和区位等理论,综合运用文献分析法、对比研究法、案例... 详细信息

非洲新一轮的“海外圈地运动”愈演愈烈,严重威胁非洲人民的粮食安全。本文在系统梳理国内外农村土地流转市场的相关研究基础上,基于制度变迁、土地产权、土地交易费用论、地租地价和区位等理论,综合运用文献分析法、对比研究法、案例分析法,系统分析了非洲农村土地流转市场的现状、特征和问题和中国农村土地流转市场的特征和经验,并从土地制度、农村土地流转模式、农村土地流转市场的运行机制、农村土地流转市场体系等方面进行了中非农村土地流转市场的规范对比分析。在此基础上,以中国各地农村土地流转市场的探索经验为标杆,从产权制度、市场体系、流转模式、市场管理等方面提出了规范非洲农村土地流转市场的对策建议,以期为完善非洲农村土地流转市场,保障非洲人民的粮食安全提供一定的参考。

关键词：农村土地流转市场规范中非对比