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Micro-Mechanism of Silicon-Based Waveguide Surface Smoothing in Hydrogen Annealing

Chinese Physics Letters 2016年第12期33卷 110-114页

作者：段倩倩任馨宇菅傲群张辉冀健龙张强张文栋桑胜波 Micro Nano System Research Center College of Information EngineeringTaiyuan University of Technology(Ministry of Education)Taiyuan University of Technology Key Laboratory of Advanced Transducers and Intelligent Control System(Ministry of Education) Taiyuan University of Technology

The micro-mechanism of the silicon-based waveguide surface smoothing is investigated systematically to explore the effects of silicon-hydrogen bonds on high-temperature hydrogen annealing waveguides. The effect of silicon- hydrogen bonds on the surface migration movement of silicon atoms and the waveguide surface topography are revealed. The micro-migration from an upper state to a lower state of silicon atoms is driven by silicon- hydrogen bonding, which is the key to ameliorate the rough surface morphology of the silicon-based waveguide. The process of hydrogen annealing is experimentally validated based on the simulated parameters. The surface roughness declines from 1.523nm to 0.461 nm.

关键词： of on Micro-Mechanism of Silicon-Based Waveguide Surface Smoothing in Hydrogen Annealing in is

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Nanodevices: Record‐Low‐Threshold Lasers Based on Atomically Smooth Triangular Nanoplatelet Perovskite (Adv. Funct. Mater. 2/2019)

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advanced Functional Materials 2019年第2期29卷

作者： Guohui Li Tao Che Xingqi Ji Shaoding Liu Yuying Hao Yanxia Cui Shengzhong Liu Key Lab of Advanced Transducers and Intelligent Control System of Ministry of Education College of Physics and Optoelectronics Key Laboratory of Interface Science and Engineering in Advanced Materials Taiyuan University of Technology Taiyuan 030024 P. R. China State Key Laboratory of Quantum Optics and Quantum Optics Devices Shanxi University Taiyuan 030006 P. R. China Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 P. R. China

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Fabrication of ordered micro- and nano-scale patterns based on optical discs and nanoimprint

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Optoelectronics Letters 2016年第4期12卷 241-244页

作者：郭慧晶张校亮李晓春 Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education and Shanxi ProvinceColleges of Physics and Optoelectronics Taiyuan University of Technology

A simple method to fabricate one-dimensional(1-D) and two-dimensional(2-D) ordered micro- and nano-scale patterns is developed based on the original masters from optical discs, using nanoimprint technology and soft stamps. Polydimethylsiloxane(PDMS) was used to replicate the negative image of the 1-D grating pattern on the masters of CD-R, DVD-R and BD-R optical discs, respectively, and then the 1-D pattern on one of the PDMS stamps was transferred to a blank polycarbonate(PC) substrate by nanoimprint. The 2-D ordered patterns were fabricated by the second imprinting using another PDMS stamp. Different 2-D periodic patterns were obtained depending on the PDMS stamps and the angle between the two times of imprints. This method may provide a way for the fabrication of complex 2-D patterns using simple 1-D masters.

关键词： Compact disks Fabrication Microchannels Nanotechnology Optical data storage Optical disk storage Polydimethylsiloxane Silicones

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Three-dimensional super-resolution longitudinal magnetization spot arrays

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Light(Science & Applications) 2017年第1期6卷 630-637页

作者： Zhong-Quan Nie Han Lin Xiao-Fei Liu Ai-Ping Zhai Yan-Ting Tian Wen-Jie Wang Dong-Yu Li Wei-Qiang Ding Xue-Ru Zhang Ying-Lin Song Bao-Hua Jia Key Lab of Advanced Transducers and Intelligent Control Systems Ministry of Education of Shanxi ProvinceCollege of Physics and OptoelectronicsTaiyuan University of TechnologyTaiyuan 030024China Centre for Micro-Photonics Faculty of ScienceEngineering and TechnologySwinburne University of TechnologyHawthornVictoria 3122Australia Department of Science Taiyuan Institute of TechnologyTaiyuan 030008China Department of Physics Lingnan Normal UniversityZhanjiang 524048China Department of Physics Harbin Institute of TechnologyHarbin 150001China

We demonstrate an all-optical strategy for realizing spherical three-dimensional(3D)super-resolution(∼λ3/22)spot arrays of pure longitudinal magnetization by exploiting a 4πoptical microscopic setup with two high numerical aperture(NA)objective lenses,which focus and interfere two modulated vectorial *** phase filters(MPFs)are designed via an analytical approach derived from the vectorial Debye diffraction theory to modulate the two circularly polarized *** system is tailored to constructively interfere the longitudinal magnetization components,while simultaneously destructively interfering the azimuthal *** a result,the magnetization field is not only purely longitudinal but also super-resolved in all three ***,the MPFs can be designed analytically to control the number and locations of the super-resolved magnetization spots to produce both uniform and nonuniform arrays in a 3D ***,an all-optical control of all the properties of light-induced magnetization spot arrays has been demonstrated for the first *** results open up broad applications in magnetic-optical devices such as confocal and multifocal magnetic resonance microscopy,3D ultrahigh-density magneto-optic memory,and light-induced magneto-lithography.

关键词： inverse Faraday effect longitudinal magnetization magnetic-optical devices magneto-optics vectorial beams vectorial Debye diffraction theory

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Enhancing squeezing and nonclassicality of light in atom-optomechanical systems

arXiv

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arXiv 2018年

作者： Guo, Yanqiang Guo, Xiaomin Li, Pu Shen, Heng Zhang, Jing Zhang, Tiancai Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan University of Technology Taiyuan030024 China Institute of Optoelectronic Engineering College of Physics and Optoelectronics Taiyuan University of Technology Taiyuan030024 China State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-Electronics Shanxi University Taiyuan030006 China Clarendon Laboratory University of Oxford Parks Road OxfordOX1 3PU United Kingdom

Quadrature squeezing of light is investigated in a hybrid atom-optomechanical system comprising a cloud of two-level atoms and a movable mirror mediated by a single-mode cavity field. When the system is at high temperatures with quadrature fluctuations of light much above the standard quantum limit (SQL), excitation counting on the collective atomic state can effectively reduce the light noise close to the SQL. When the system is at low temperatures, considerable squeezing of light below the SQL is found at steady state. The squeezing is enhanced by simply increasing the atom-light coupling strength with the laser power optimized close to the unstable regime, and further noise reduction is achieved by decreasing various losses in the system. The presence of atoms and excitation counting on the atoms lessen the limitation of thermal noise, and the squeezing can be achieved at environment temperature of the order K. The nonclassicality of the light, embodied by the negative distributions of the Wigner function, is also studied by making non-Gaussian measurements on the atoms. It is shown that with feasible parameters excitation counting on the atoms is effective in inducing strongly optical nonclassicality. Copyright © 2018, The Authors. All rights reserved.

关键词： Atoms

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A novel multi-microgrids system reliability assessment algorithm using parallel computing

A novel multi-microgrids system reliability assessment algor...

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2017 IEEE Conference on Energy Internet and Energy system Integration, EI2 2017

作者： Su, Xin Cheng, Yan Zhang, Xingyou Wei, Chuanzhi State Grid Jinan Power Supply Company Jinan China State Grid Shandong Electric Power Research Institute Jinan China Key Lab. of Power System Intelligent Dispatch and Control Ministry of Education Shandong University China

ISBN: (纸本)9781538614273

Under the condition of multi-microgrids system, due to the location dispersion of microgrids, and the different characteristics of distributed generations and loads, the size of sampling in a reliability assessment algorithm is always huge, which influences computational efficiency. In this paper, based on the operation characteristics of a multi-microgrid system, a reliability evaluation algorithm based on the parallel computing algorithm of the multi-microgrid system is proposed. The algorithm can sample the operating state of each microgrid at the same time and consider the interaction between the various microgrids in a multi-microgrids system. The algorithm can significantly improve the calculation speed of the reliability assessment algorithm of the multi-microgrid system, which is of great significance to the reliability evaluation of the multi-microgrid system in the region. © 2017 IEEE.

关键词： Reliability analysis

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Self-Induced Backaction Optical Pulling Force

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Physical Review Letters 2018年第12期120卷 123901-123901页

作者： Tongtong Zhu Yongyin Cao Lin Wang Zhongquan Nie Tun Cao Fangkui Sun Zehui Jiang Manuel Nieto-Vesperinas Yongmin Liu Cheng-Wei Qiu Weiqiang Ding Department of Physics Harbin Institute of Technology Harbin 150001 China Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 Singapore 117583 Singapore Key Lab of Advanced Transducers and Intelligent Control System Ministry of Education and Shanxi Province College of Physics and Optoelectronics Taiyuan University of Technology Taiyuan 030024 China Department of Biomedical Engineering Dalian University of Technology Dalian 116024 China Instituto de Ciencia de Materiales de Madrid Consejo Superior de Investigaciones Científicas Campus de Cantoblanco Madrid 28049 Spain Departments of Mechanical and Industrial Engineering and Electrical and Computer Engineering Northeastern University Boston Massachusetts 02115 USA

We achieve long-range and continuous optical pulling in a periodic photonic crystal background, which supports a unique Bloch mode with the self-collimation effect. Most interestingly, the pulling force reported here is mainly contributed by the intensity gradient force originating from the self-induced backaction of the object to the self-collimation mode. This force is sharply distinguished from the widely held conception of optical tractor beams based on the scattering force. Also, this pulling force is insensitive to the angle of incidence and can pull multiple objects simultaneously.

关键词： Electromagnetism Mechanical effects of light on material media Photonic crystals Optical microcavities Optical tweezers

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control Strategy of MMC Battery Energy Storage system under Asymmetrical Grid Voltage Condition

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Chinese Journal of Electrical Engineering 2016年第2期2卷 76-83页

作者： Lei Zhang Feng Gao Nan Li Key Lab of Power System Intelligent Dispatch and Control(Shandong University) Ministry of EducationJinan250061China

A battery energy storage system using modular multilevel converter(MMC)as the interfacing converter could have several inherent advantages when compared with battery energy storage systems based on two-level inverter or cascaded H-bridge *** can manage the state-of-charges(SOCs)of all batteries to be equal to avoid the overcharge or over discharge of single *** inherent power exchange characteristics using circulating currents could increase the control flexibility and consequently improve the output quality and the internal regulation *** paper investigates the operational principle and control strategy of MMC battery energy storage system under unbalanced grid voltage condition,where key issues of system model and corresponding control methods are very different from those under the normal grid voltage *** injected de current control,SOC balancing control and circulating current control methods are fully discussed in this ***,the theoretical findings were verified through Matlab simulation and a scaled down experimental prototype.

关键词： Modular multilevel converters(MMC) battery energy storage system circulating current asymmetrical grid voltage

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The technology of distributed electric grid fiber Raman temperature sensing for intelligent 16

The technology of distributed electric grid fiber Raman temp...

引用

16th International Conference on Optical Communications and Networks, ICOCN 2017

作者： Li, Jian Zhang, Mingjiang Zhang, Jianzhong Liu, Yi Key Lab of Advanced Transducers and Intelligent Control System Ministry of Education AndShanxi Province Taiyuan University of Technology Taiyuan030024 China Institute of Optoelectronic Engineering College of Physics and Optoelectronics Taiyuan University of Technology Taiyuan030024 China

ISBN: (纸本)9781538632734

A temperature demodulation method by using compensation of fiber attenuation and dispersion for distributed temperature sensors (DTS) is proposed and demonstrated in order to improve the DTS measuring speed and accuracy. Firstly, the attenuation coefficients difference between anti-Stokes and Stokes backscattering is modified, which avoids the calibration processing on the entire sensing optical fiber and reduces system operation time. Secondly, dispersion shift algorithm is applied to correct the position of Stokes backscattering, and then the intensity of Stokes backscattering can be obtained at the same position with anti-Stokes backscattering, which eliminates the influence of optical fiber dispersion on temperature demodulation and improves the accuracy of temperature measurement. © 2017 IEEE.

关键词： Backscattering

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Impact of Brillouin amplification on the spatial resolution of noise-correlated Brillouin optical reflectometry

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Chinese Optics Letters 2017年第8期15卷 17-21页

作者：张明江鲍晓毅柴晶张永宁刘瑞霞刘慧刘毅张建忠 Key Lab of Advanced Transducers and Intelligent Control Systems Ministry of Education and Shanxi Province Taiyuan 030024 China Institute of Optoelectronic Engineering College of Physics&Optoelectronics Taiyuan University of Technology Taiyuan 030024 China Fiber Optics Group Department of Physics University of Ottawa Ottawa K1N 6N5 Canada

Distributed optical fiber sensors have been widely used to monitor temperature, strain, vibration, and so on. Specifically, the sensors based on Brillouin scattering have been studied extensively to measure the strain... 详细信息

关键词： Impact of Brillouin amplification on the spatial resolution of noise-correlated Brillouin optical reflectometry DFB length EDFA PRBS BFS

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