作者： Sun, Shuting;Yang, Peng;Chen, Huayu;Shao, Xuexiao;Ji, Shanling;Li, Xiaowei;Li, Gongying;Hu, Bin （¹Brain Health Engineering Laboratory, School of Medical Technology, Beijing Institute of Technology, Beijing, China;²Shandong Daizhuang Hospital, Jining, China;³Gansu Provincial Key Laboratory of Wearable Computing, School of Information Science and Engineering, Lanzhou University, Lanzhou, China;⁴Shandong Academy of Intelligent Computing Technology, Jinan, China;⁵Department of Psychiatry, Huai’an Third People’s Hospital, Huai’an, China;⁶Chinese Academy of Sciences, Center for Excellence in Brain Science and Intelligence Technology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China;⁷Joint Research Center for Cognitive Neurosensor Technology of Lanzhou University and Institute of Semiconductors, Chinese Academy of Sciences, Lanzhou, China;⁸Open Source Software and Real-Time System, Lanzhou University, Ministry of Education, Lanzhou, China）

出处： Frontiers in Human Neuroscience 2022 Vol.16

摘要： Objectives: Several studies have shown abnormal network topology in patients with major depressive disorder (MDD). However, changes in functional brai ...

发明人： 李昕，黄玲玲，周宏强，王涌天，李晓炜

申请人： 北京理工大学

申请号： 202210394455.0

申请日期： 2022.04.14

摘要： 本发明涉及基于各向异性超表面的相位复原方法，属于相位成像领域。通过沿界面应用梯度相位，三个具有衍射相位差的图像被传播在成像平面上。由于超表面的共轭Pancharatnam‑Berry(PB)相位调制，这三个图像传播确定的衍射距离。通过单次捕获同时记录物体的强度图像。然后使用强度传递方程算法对记录的图 ...

发明人： 姜澜，董希明，李晓炜，王猛猛，王素梅，张向宇，郭茂林

申请人： 北京理工大学

申请号： 202211103867.0

申请日期： 2022.09.09

摘要： 本发明涉及一种垂直偏振飞秒激光脉冲序列实现半球谐振子质量调平的方法，属于激光应用技术领域。本发明的目的是为了解决现有半球谐振子质量调平方法精度低，效率低的问题，提供一种垂直偏振飞秒激光脉冲序列实现半球谐振子质量调平的方法；该方法高精度体现在利用脉冲序列能有效减小烧蚀区域面积，同时本工作首先发现垂直偏 ...

作者： Zhou, Hongqiang;Li, Xin;Ullah, Naqeeb;Geng, Guangzhou;Li, Junjie;Li, Xiaowei;Wang, Yongtian;Huang, Lingling （¹Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing; 100081, China;²Department of Electronic Engineering, Balochistan University of Information Technology Engineering and Management Sciences, Quetta; 87300, Pakistan;³Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, The Chinese Academy of Sciences, Beijing; 100191, China;⁴Laser Micro/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing; 100081, China）

出处： Applied Physics Letters 2022 Vol.120 No.16 P161702

关键词： ALL-DIELECTRIC METASURFACE;CONTRAST MICROSCOPY;VORTEX BEAM;POLARIZATION;RESOLUTION;TRANSPORT;OPTICS

摘要： Phase retrieval is a generic calculating phase method through intensity images and prior conditions. Usually, the image recording system requires stab ...

作者： Zhang, Xue¹;Huang, Lingling¹;Zhao, Ruizhe¹;Zhou, Hongqiang¹;Li, Xin¹;Geng, Guangzhou²;Li, Junjie²;Li, Xiaowei³;Wang, Yongtian¹;Zhang, Shuang^4,5; （¹ Beijing Inst Technol, Beijing Engn Res Ctr Mixed Real & Adv Display, Sch Opt & Photon, Beijing 100081, Peoples R China. ;² Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100191, Peoples R China. ;³ Beijing Inst Technol, Sch Mech Engn, Laser Micro Nanofabricat Lab, Beijing 100081, Peoples R China. ;⁴ Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China. ;⁵ Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Peoples R China.）

出处： SCIENCE ADVANCES 2022 Vol.8 No.40

关键词： PHASE DISCONTINUITIES; POLARIZATION; METASURFACE; CONVERSION; HOLOGRAMS

摘要： In mathematics, general functions can be decomposed into a linear combination of basis functions. This principle can be used for creating an infinite ...

作者： Zhao, Ruizhe¹;Geng, Guangzhou²;Wei, Qunshuo¹;Liu, Yue¹;Zhou, Hongqiang¹;Zhang, Xue¹;He, Cong¹;Li, Xin¹;Li, Xiaowei³;Wang, Yongtian¹;Li, Junjie²;Huang, Lingling¹; （¹ Beijing Inst Technol, Sch Opt & Photon, Beijing Engn Res Ctr Mixed Real & Adv Display, Beijing 100081, Peoples R China. ;² Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100191, Peoples R China. ;³ Beijing Inst Technol, Sch Mech Engn, Laser Micro Nanofabricat Lab, Beijing 100081, Peoples R China.）

出处： ADVANCED OPTICAL MATERIALS 2022 Vol.10 No.8

关键词： BAND ACHROMATIC METALENS; PHASE DISCONTINUITIES; GENERATION; RESOLUTION

摘要： Diffraction gratings are crucial optical elements in various optical systems, which can realize tailored diffraction energy distributions as well as p ...

发明人： HUANG LINGLING;黄玲玲;ZHANG XUE;张雪;WANG YONGTIAN;王涌天;LI XIAOWEI;李晓炜

申请人： BEIJING INSTITUTE OF TECHNOLOGY;北京理工大学

申请号： 202111347320.0

申请日期： 2021.11.15

摘要： (EN) The invention discloses a design method and a preparation method of a generalized vortex light beam, and belongs to the field of vortex light bea ...

作者： 施耀明 （导师：李晓炜）

学位名称： 硕士

出处： 北京理工大学 2018

关键词： 飞秒激光；空间整形；贝塞尔光束；三维曲面；激光诱导表面周期性结构

摘要： 随着先进制造技术的不断发展,从过去难以实现在复杂三维曲面进行微纳结构加工到现在可以通过多种途径实现曲面加工,拥有复杂曲面的产品数量也得到了很大的发展,这些产品被广泛的应用在造船、航空、能源等领域。机械加工、光刻等许多传统的方法被用来加工三维曲面。但是这些传统的加工方法在加工三维曲面时存在着加工过程复 ...

作者： Han, Weina;Liu, Furong;Yuan, Yanping;Li, Xiaowei;Wang, Qingsong;Wang, Shaojun;Jiang, Lan （¹Beijing Engineering Research Center of Applied Laser Technology, Institute of Laser Engineering, Beijing University of Technology, Beijing, 100124, People\'s Republic of China;²Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, People\'s Republic of China;³Laser Micro/Nano-Fabrication Laboratory, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, People\'s Republic of China）

出处： Nanotechnology 2018 Vol.29 No.30 P305301

关键词： femtosecond laser;metallic nanostructure;laser induced periodic surface structures;surface plasmon polaritons (SPPs)

摘要： In this study, we report polarization-dependent concentric circular periodic surface structures on Si induced by a single shot femtosecond (fs) laser ...

作者： 王智 （导师：李晓炜）

学位名称： 硕士

出处： 北京理工大学 2017

关键词： 飞秒激光；时空整形；双脉冲贝塞尔光束；微孔；微通道

摘要： 微孔/微通道结构是日常生活中一种非常常见的结构,在微流体器件、三维封装技术、航空航天、传感器等领域都具有广泛的应用。玻璃材料,凭借其良好的透光性、化学稳定性、热稳定性、力学性能等,在各个领域也都得到了广泛的应用。特别是在微流体器件领域,玻璃可能是最理想的基底材料,但如何在玻璃上加工微通道却成为了一个 ...