激光技术及其应用.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,激光技术及其应用,电子工程学院,2015,年,1,月,18,日,1,主要内容,飞秒激光技术,激光与物质相互作用机理,微纳加工应用,出访院校介绍,溅射沉积镀膜技术,激光雷达技术,总结与期望,飞秒激光的主要特点,具有激光的共同特点，同时,1.,超短脉冲,1fs=10,-15,s,2.,超强功率（瞬时功率，可达到百万亿瓦）,当它被聚焦到亚微米的空间区域，激光电磁场的强度比原子核对其周围电子的作用力还要高数倍。,1,、,飞秒激光技术,Sallie Gardner Running,脉冲宽度极短,1fs=10,-15,秒,(,电子绕原子核半周的时间,),微观世界超快过程的研究,物理 化学 生物学,1,、,飞秒激光技术,Time Microscopy femtosecond laser,Ahmed H.Zewail,1999 Nobel Prize,Femto-Chemistry,1,、,飞秒激光技术,10,12,10,15,W,10,18,10,21,W/cm,2,(E=10,11,V/cm,氢原子库仑场,510,9,V/cm,）,极端物理条件 光压,10,9,10,12,bars,磁场,10,9,高斯,加速度,10,21,g(10,22,m/s,2,),温度,10,8,聚焦,1,、,飞秒激光技术,飞秒,激光,飞秒激光,的产生,超快科学,（探测认识某些超快物理过程）,物理,化学,生物学,超快技术,电子学（光电取样）,光通讯,成像,共焦显微,OCT,飞秒激光,的放大,超快超强科学,（创造一个极端物理条件）,飞秒等离子体,强场下电子的相对论运动,Self,channeling,相对论自聚焦,千兆巴激光压力,尾场等离子体波,未来科学技术新突破,未来科学技术新突破,飞秒相干,x,射线及,x,激光,（高次谐波，汤姆逊效应）,x,光显微术,x,光印刷术,x,光照相,激光热核聚变快速点火,激光粒子加速器,THz,毫米波技术,云层放电,超高速计算机,超高速光通讯,生物技术（合成生物分子）,医学（,OCT,）,微加工技术,1,、,飞秒激光技术,Oscillator,Stretcher,（,10,3,-10,5,）,Amplifier,（,10,3,）,Compressor,（,10,3,-10,5,）,啁啾脉冲放大,1,飞秒激光技术,YVO,4,Ti:s oscillator,SESAM,Gain amplifier,Stretcher,Energy amplifier,Compressor,Pre-amplifier,GR,PC1,Ti:s,PC2,532nm Nd:YAG,532nm Nd:YAG,532nm Nd:YAG,Ti:s,Ti:s,GR,GR,1,、,飞秒激光技术,1,、,飞秒激光技术,1,、,飞秒激光技术,1,、,飞秒激光技术,1,、,飞秒激光技术,1,、,飞秒激光技术,1,、,飞秒激光技术,抽运光功率提高到 后，压缩后脉冲宽度为，此时脉冲宽度最窄，单脉冲能量为,，峰值功率,1,、,飞秒激光技术,1,、,飞秒激光技术,2,、,激光与物质相互作用机理,与金属作用的双温方程模型,与聚合材料作用的,n,光子吸收模式,与电介质相互作用的动力学方程,2,、,激光与物质相互作用机理,X,m,X,d,z,x,I,n,（,x,）,发生多光子过程的空间区域更小,多光子,I,n,（,t,）,吸收几率,发生多光子过程的时间范围更小,X,d,X,m,1000:1,（,532nm,）,光束发散角,100urad,（在光束扩展之后）,瞄准范围,1,，分辨率,1.6,rad,激光的环境,18psia,，,干燥的空气,93,CALIOP,发射接收系统光学路径,94,6,激光雷达技术,96,数据空间分辨率,6,激光雷达技术,6,激光雷达技术,5X beam expanders,Napoli Lidar Experimental Setup,387 nm Raman,407 nm Raman,355 nm Elastic,532 nm Elastic,607 nm Raman,Summary of Multi-wavelength Raman Lidar,Laser Source,Nd-YAG,Wavelength,355,532,1064 nm,Pulse duration,5 nsec,Pulse Energy,100 mJ 355 nm,90 mJ 532 nm,300 mJ 1064 nm,Reperate,20 Hz,Divergence,0.1 mrad 1064 nm,0.1 mrad 532 nm,0.1 mrad 355 nm,Receiver system,Telescope,Newtonian30 cm,Field of View,1.3 mrad,Elastic Channel,355 nm BW,0.5 nm,532 nm BW,0.5 nm,Depolarization Channel,532 nm,Parallel&Perpendicular,N,2,Raman Channel,386.7nm BW,0.5 nm,607 nm,BW,1.0 nm,H,2,O Raman,406.7nm,BW,0.5 nm,PBL development,Lidar Characterization of Volcanic Dust,Mt.Etna Eruption Events (July-August 2001),发表论文成果,106,Conference of Laser Ablation-COLA,2013.10.06-11,发表论文成果,1.,Lixia,Sang,Hongjie Zhang,Xiaochang Ni,K.K.Anoop,Rosalba Fittipaldi,Xuan Wang,Salvatore Amoruso,Hydrogen-evolving photoanode of TiO2 nanoparticles film deposited by a femtosecond laser,International Journal of Hydrogen Energy,2015,40(1):779-785,2.Yao Huan,Ni Xiaochang,Wang Xuan,Li Tong,Xu Lijuan,Song Zhenming.The relevant research on AOD and concentration of PM2.5 pollutantA;The Second International Conference on Frontiers in Optical Imaging Technology and ApplicationC;2014,3.,Xiaochang Ni,Lixia Sang,Hongjie Zhang,Anoop K.K.,S.Amoruso,Xuan Wang,R.Fittipaldi,Tong Li,Minglie Hu,Lijuan Xu,Femtosecond laser deposition of TiO2 nanoparticle-assembled films with embedded CdS nanoparticles,Optoelectronics Letters.10,（,1,）,43-46,，,2014,4.,Xiaochang Ni,K.K.Anoop,X.Wang*,D.Paparo,S.Amoruso,R.Bruzzese,Dynamics of femtosecond laser-produced plasma ions,Applied Physics A,2014,117:111115,5.,Xiaochang Ni,*,Anoop K.K,Mario Bianco,Salvatore Amoruso,Xuan Wang,Tong Li,Minglie Hu,Zhenming Song,Ion dynamics in ultrafast laser ablation of a copper target,Chinese Optics Letters,2013,11(9):093201-5,6.D.K.Pallotti,X.Ni,R.Fittipaldi,X.Wang,S.Lettieri,A.Vecchione&S.Amoruso,Laser ablation and deposition of titanium dioxide with ultrashort pulses at 527 nm,Appl.Phys.B,2015,s00340-015-6024-1,7.K.K.Anoop,Xiaochang Ni,Xuan Wang,Riccardo Bruzzese,and Salvatore Amoruso,Spectrally Resolved Imaging of Ultrashort Laser Produced Plasma,IEEE TRANSACTIONS ON PLASMA SCIENCE,2014,VOL.42,NO.10:2698-2699,8.K.K.Anoop,Xiaochang Ni,Salvatore Amoruso,Xuan Wang,Riccardo Bruzzese,Fast ions generation in femtosecond laser ablation of a solid metallic target,Laser Phys.24(2014)105902(6pp),9.K.K.Anoop,Xiaochang Ni,M.Bianco,M.Paparo,X.Wang,R.Bruzzese,S.Amoruso,Two-dimensional imaging of atomic and nanoparticle components in copper plasma plume produced by ultrafast laser ablation,Applied Physics A,2014,117:313318,10.,参与,Christoph Gerhard,Stephan Wieneke,and Wolfgang Vil,编辑书籍“,Laser Ablation Fundamentals,Methods and Applications”,中第五章节的撰写工作,K.K.Anoop,Xiaochang Ni,Xuan Wang,Giovanni Ausanio,and Salvatore Amoruso,Chapter 5:Ultrafast laser ablation of solid targets:A versatile method for fast ion generation and nanoparticle synthesis,Nova Science Publishers,New York(2015),心得与体会,合作共赢,错位发展,你中有我,我中有你,立足长远,注意形象,自我保护,心得与体会,-,对学生,立志,自信,立德树人,学无止境,Some Photoes,110,Some Photoes,111,Some Photoes,112,Some Photoes,113,Some Photoes,114,Some Photoes,115,Some Photoes,116,Some Photoes,117,Some Photoes,118,Some Photoes,119,Some Photoes,120,Some Photoes,121,Some Photoes,122,Some Photoes,123,Some Photoes,124,Some Photoes,125,Some Photoes,126,Some Photoes,127,Some Photoes,128,Some Photoes,129,Some Photoes,130,总结与展望,飞秒激光技术,激光与物质相互作用机理,微纳加工应用,溅射沉积镀膜技术,激光雷达技术,谢 谢 大 家！,132,