李晓炜
机械与车辆学院
职称：讲师
作者：施耀明
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：王智
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 ...
作者：谢乾
学位名称：硕士
出处：北京理工大学机械与车辆学院 2016
关键词：飞秒激光；贝塞尔光束；高效加工；微纳结构
摘要：飞秒激光微纳制造技术具有无接触、高精度、灵活可控等特点，已成为研究热点之一，其中高效率直写加工逐渐引起学者们的关注。基于空间光整形的飞秒激光贝塞尔光束具有小光斑直径、长焦深的光强分布特性，能够加工小直径、高深径比、高质量的微纳结构。目前，贝塞尔光束微纳结构加工难以兼顾最小尺寸和大面积结构高效加工这两 ...
作者：刘洋
学位名称：硕士
出处：北京理工大学机械与车辆学院 2015
关键词：飞秒激光；时空同步聚焦；微纳加工；光斑动态控制
摘要：飞秒激光是一种应用广泛的超快激光,飞秒激光具有极短的持续时间和极高的峰值功率,这使得其在微纳加工中具有诸多独特的优势;时空同步聚焦则是一种全新的宽频激光光场聚焦方式,时空同步聚焦提供了新的聚焦维度和可控维度,这使得其在光斑尺寸形状及动态控制等方面具有突出优势。近年来,越来越多的研究学者将飞秒激光与时 ...
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
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 ...
发明人：江毅，崔洋，姜澜，张雨彤，李晓炜
申请日期：2022.06.06
摘要：本发明涉及一种多边形周期结构蓝宝石光纤包层的制作方法，属于光纤传感领域，该技术通过飞秒激光在蓝宝石光纤侧表面沿着光纤轴向刻蚀出多边形的周期性的凹槽使得光纤外部周遭有效折射率降低，在蓝宝石光纤中心位置和周边形成微小的有效折射率差，使得蓝宝石光纤构成以刻蚀后的结构为外包层，未刻蚀部分为纤芯形成传光波导。 ...
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
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：HUANG LINGLING;黄玲玲;ZHANG XUE;张雪;WANG YONGTIAN;王涌天;LI XIAOWEI;李晓炜
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：Liu, Yin;Chen, Yufeng;Zhou, Shipeng;Huang, Lingling;Wang, Yongtian;Li, Xiaowei （1Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 10081, China;2Laser Micro/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 10081, China）
出处：Sensors and Actuators B: Chemical 2022
关键词：MACH-ZEHNDER INTERFEROMETER;POLYMER OPTICAL-FIBER;RELATIVE-HUMIDITY;POLYVINYL-ALCOHOL;SENSOR;STRAIN;FILM
摘要：In response to the requirements of small effective sensing volume for simultaneous interpreting of resonant peaks with different sensing sensitivities ...
