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中国物理学会2013年秋季学术会议

作者： Ai-Ping Liu Xiao Xiong Xi-Feng Ren Yong-Jing Cai Guang-Hao Rui Qi-Wen Zhan Guang-Can Guo-Ping Guo 1Key Laboratory of Quantum Information University of Science and Technology of China Hefei Anhui 230026 China Department of Optics and Optical engineering University of Science and Technology of China Heifei Anhui 230026 China Electro-Optics Program University of Dayton 300 College ParkDayton Ohio 45469 USA

orbital angular momentum is an intrinsic property of light that has attracted attentions in many recent *** from the specific doughnut transverse intensity profiles and helical wavefronts,light waves carrying OAMs have been used in many areas,such as optical trapping,imaging,optical communication and even quantum information processing [1].

关键词： OAM surface plasmon

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Cutting reactive foils without igniting them (a femtosecond laser machining approach)

Cutting reactive foils without igniting them (a femtosecond ...

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Synthesis, Characterization and Properties of Energetic/Reactive Nanomaterials

作者： Picard, Yoosuf N. Liu, Hsiao-Hua Speys, Stephen J. McDonald, Joel P. Adams, David P. Weihs, Timothy P. Yalisove, Steven M. Dept. of Mat. Sci. and Engineering University of Michigan Ann Arbor MI 48109-2176 United States Center for Ultrafast Optical Science University of Michigan Ann Arbor MI 48109-2099 United States Dept. of Mat. Sci. and Engineering Johns Hopkins University Baltimore MD 21218-2686 United States Applied Physics Program University of Michigan Ann Arbor MI 48109-1120 United States Advanced Manufacturing Processes Lab Sandia National Laboratories Albuquerque NM 87185-0959 United States

Ni/Al nanostructured multilayer foils were machined with femtosecond pulse-length laser irradiation at various fluences. Scanning electron microscopy, back-scattered electron detection, and atomic force microscopy were used to characterize the resulting laser modified regions. We show that material removal at the micron scale is possible with no ignition of a self-propagation reaction emanating from the irradiated areas, a danger minimized by the fact that the extremely short time duration of the pulse produces negligible heat dissipation into the multilayer system. Nevertheless, initial AFM and BSE results give indication that multilayers may be intermixing and reacting locally in areas smaller than the laser beam diameter, though the exact ignition mechanism is still to be determined.

关键词： Metal foil

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Extended Drude Model for Intraband-Transition-Induced optical Nonlinearity

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Physical Review Applied 2019年第6期11卷 064062-064062页

作者： Heng Wang Kang Du Chuhao Jiang Zhiqiang Yang Lixia Ren Wending Zhang Soo Jin Chua Ting Mei MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions and Shaanxi Key Laboratory of Optical Information Technology School of Science Northwestern Polytechnical University Xi’an 710072 China Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 Singapore 117583 LEES Program Singapore-MIT Alliance for Research & Technology (SMART) 1 CREATE Way #10-01 CREATE Tower Singapore 138602

No existing model has completely explained the physics of the optical nonlinearity for epsilon-near-zero materials, which have recently emerged as candidates for design and fabrication of active nanophotonic devices. We propose to extend the Drude model by adopting a weighted electron effective mass, which takes into account the electron distribution in the nonparabolic conduction band. The extended Drude model is able to interpret the cause of the nonlinearity and provide a functional relationship between the refractive index and wavelength. Both the band nonparabolicity and the temperature-dependent mobility are responsible for the intraband-transition-induced optical nonlinearity. The spectrally resolved nonlinear refractive index and nonlinear susceptibilities are obtained from this model. The results can be applied to other transparent conducting oxides and will help in the design and modeling of spectral responses of nonlinear plasmonic devices.

关键词： Electronic transitions Nonlinear optical susceptibility Optoelectronics Plasmonics Ultrafast optics Thin films Free-electron model Ultrafast pump-probe spectroscopy

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AUTOMATION OF PROPELLER INSPECTION AND FINISHING

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NAVAL ENGINEERS JOURNAL 1985年第4期97卷 124-131页

作者： STERN, H METZGER, R Howard K. Stern:is presently vice president of Robotic Vision Systems Inc. He received a bachelor of electrical engineering degree from College of the City of New York in 1960. Mr. Stern joined Dynell Electronics Corporation in 1971 and became part of the Robotic Vision Systems Inc. staff at the time of its spin-off from Dynell. He was program manager of the various three-dimensional sensing and replication systems constructed by Dynell and Robotic Vision Systems. As program manager his responsibilities encompassed technical administrative and operational areas. The first two portrait sculpture studio systems and the first three replication systems built by Robotic Vision Systems Inc. were designed manufactured and operated under his direction. Before joining Dynell Mr. Stern was a senior engineer at Instrument Systems Corporation and chief engineer of the Special Products Division of General Instrument Corporation. Prior to these positions Mr. Stern was chief engineer of Edo Commercial Corporation. At General Instrument and Edo Commercial he was responsible for the design and manufacture of military and commercial avionics equipment. Mr. Stern is presently responsible for directing the systems design and development for all of the company's programs. Robert J. Metzger:is currently engineering group leader at Robotic Vision Systems Inc. He graduated summa cum laude from the Cooper Union in 1972 with a bachelor of electrical engineering degree. Under sponsorship of a National Science Foundation graduate fellowship he graduated from the Massachusetts Institute of Technology in 1974 with the degrees of electrical engineer and master of science (electrical engineering). In 1979 Mr. Metzger graduated from Polytechnic Institute of New York with the degree of master of science (computer science). Since 1974 Mr. Metzger has been actively engaged in the design of systems and software for noncontact threedimensional optical measurement for both military and commercial applications. Of particular note are his c

Ship's propellers are currently measured by manual procedures using pitchometers, templates and gauges. This measurement process is extremely tedious, labor intensive and time consuming. In an effort to provide increased accuracy, repeatability and cost effectiveness in propeller manufacture, an automated propeller optical measurement system (APOMS) has been built which rapidly and automatically scans an entire ship's propeller using a 3-D vision sensor. This equipment is integrated with a propeller robotic automated templating system (PRATS) and the propeller optical finishing system (PROFS) which robotically template and grind the propeller to its final shape, using the APOMS-derived data for control feedback. The optical scanning and the final shape are both controlled by CAD/CAM data files describing the desired propeller shape. An automated propeller balancing system is incorporated into the PROFS equipment. The APOMS/PRATS/PROFS equipment is expected to provide lower propeller manufacturing costs.

关键词： PROPELLERS

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Design and Characterization of Octave Spanning, 1-THz Kerr Frequency Microcombs in Silicon Nitride

Design and Characterization of Octave Spanning, 1-THz Kerr F...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Tristan Melton Alwaleed Aldhafeeri Hsiao Hsuan Chin Lala Rukh Gabriel M. Colación Tara E. Drake Chee Wei Wong Mesoscopic Optics and Quantum Electronics Laboratory University of California Los Angeles CA USA Optical Science & Engineering Program Center for High Technology Materials University of New Mexico Albuquerque NM USA Dept. of Physics & Astronomy University of New Mexico Albuquerque NM USA

We design microresonators for octave-spanning soliton frequency comb generation in silicon nitride. We lock the repetition rate via an electro-optic comb and achieve phase noise of -130-dBc/Hz, with the resultant modu... 详细信息

ISBN: (纸本)9798350369311

关键词： Phase noise Frequency modulation Laser noise Silicon nitride Solitons Electro-optic modulators Electro-optic effects Microcavities

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High-repetition-rate(kHz) targets and optics from liquid microjets for high-intensity laser–plasma interactions

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High Power Laser science and engineering 2019年第3期7卷 121-141页

作者： K.M.George J.T.Morrison S.Feister G.K.Ngirmang J.R.Smith A.J.Klim J.Snyder D.Austin W.Erbsen K.D.Frische J.Nees C.Orban E.A.Chowdhury W.M.Roquemore Innovative Scientific Solutions Inc.DaytonOhio 45459USA Department of Physics and Astronomy University of CaliforniaLos AngelesCalifornia 90095USA Computer Science Program and Applied Physics Program California State University Channel IslandsCamarilloCalifornia 93012USA National Academies of Science Engineeringand MedicineWashingtonDC 20001USA Air Force Research Laboratory WPAFBOhio 45433USA Department of Physics Ohio State UniversityColumbusOhio 43210USA Department of Mathematical and Physical Sciences Miami UniversityHamiltonOhio 45011USA Center for Ultrafast Optical Sciences University of MichiganAnn ArborMichigan 48109USA Intense Energy Solutions LLC.Plain CityOhio 43064USA

High-intensity laser–plasma interactions produce a wide array of energetic particles and beams with promising ***,the high repetition rate and high average power requirements for many applications are not satisfied by the lasers,optics,targets,and diagnostics currently ***,we aim to address the need for high-repetition-rate targets and optics through the use of liquids.A novel nozzle assembly is used to generate highvelocity,laminar-flowing liquid microjets which are compatible with a low-vacuum environment,generate little to no debris,and exhibit precise positional and dimensional ***,droplets,submicron-thick sheets,and other exotic configurations are characterized with pump–probe shadowgraphy to evaluate their use as *** demonstrate a highrepetition-rate,consumable,liquid optical element,we present a plasma mirror created by a submicron-thick liquid *** plasma mirror provides etalon-like anti-reflection properties in the low field of 0.1%and high reflectivity as a plasma,69%,at a repetition rate of 1 k *** considerations of fluid compatibility,in-vacuum operation,and estimates of maximum repetition rate are *** targets and optics presented here demonstrate a potential technique for enabling the operation of laser–plasma interactions at high repetition rates.

关键词： high intensity high repetition rate laser-plasma interaction liquid droplet liquid microjet liquid sheet plasma mirror target

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Cutting Reactive Foils Without Igniting Them (A Femtosecond Laser Machining Approach)

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MRS Online Proceedings Library (OPL) 2011年第1期800卷 AA9.8-AA9.8页

作者： Yoosuf N. Picard Hsiao-Hua Liu Stephen J. Speys Joel P. McDonald David P. Adams Timothy P. Weihs Steven M. Yalisove Dept. of Materials Science and Engineering University of Michigan Ann Arbor MI 48109–2176 U.S.A. Center for Ultrafast Optical Science University of Michigan Ann Arbor MI 48109–2099 U.S.A. Dept. of Materials Science and Engineering Johns Hopkins University Baltimore MD 21218–2686 U.S.A. Applied Physics Program University of Michigan Ann Arbor MI 48109–1120 U.S.A. Advanced Manufacturing Processes Lab Sandia National Laboratories Albuquerque NM 87185–0959 U.S.A.

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Fine 3D control of THz emission in air with dual femtosecond laser pre-pulses at tunnelling ionisation regime

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Light(Advanced Manufacturing) 2024年第3期5卷 62-74页

作者： Hsin-Hui Huang Takeshi Nagashima Kota Kumagai Yoshio Hayasaki Saulius Juodkazis Vladimir T.Tikhonchuk Koji Hatanaka Optical Sciences Centre ARC Training Centre in Surface Engineering for Advanced Materials(SEAM)School of ScienceSwinburne University of TechnologyHawthornVictoria 3122Australia Faculty of Science and Engineering Setsunan University17-8 Ikeda-NakamachiNeyagawaOsaka572-8508Japan Center for Optical Research and Education(CORE) Utsunomiya University7-1-2 YotoUtsunomiya 321-8585Japan WRH Program International Research Frontiers Initiative(IRFI)Tokyo Institute of Technology Nagatsuta-choMidori-kuYokohamaKanagawa 226-8503 Japan Laser Research Center Physics FacultyVilnius UniversitySauletekio Ave.1010223 VilniusLithuania Centre Lasers Intenses et Applications Universite de Bordeaux351Cours de la Liberation33405 Talence cedexFrance Extreme Light Infrastructure ERIC ELI Beamlines FacilityZa Radnicic 83525241 Dolni BřežanyCzech Republic Organization for Research Strategy and Development Okayama Univ.1-1-1 Tsushima-nakaKita-kuOkayama 700-8530Japan

Emission of THz radiation from air breakdown at focused ultra-short fs-laser pulses(800 nm/35 fs)was investigated for the 3D spatio-temporal control where two pre-pulses are used before the *** laser pulse induced air breakdown forms a~120μm-long focal volume generate shockwaves which deliver a denser air into the focal region of the main pulse for enhanced generation of THz radiation at 0.1-2.5 THz spectral *** intensity of 162 pre-and main-pulses was at the tunnelling ionisation intensities(1-3)×10 W/cm and corresponded to sub-critical(transparent)plasma formation in *** analysis of THz radiation revealed that orientation of the air density gradients generated by pre-pulses and their time-position locations defined the ellipticity of the generated THz electrical *** rotational component of electric current is the origin of THz radiation.

关键词： THz radiation Femtosecond laser induced breakdown Air breakdown spatio-temporal control

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Dispersive optical solitons with Schrödinger-hirota equation using undetermined coefficients

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Journal of Computational and Theoretical Nanoscience 2016年第8期13卷 5288-5293页

作者： Bernstein, Ida Melikechi, Noureddine Zerrad, Essaid Biswas, Anjan Belic, Milivoj Department of Physics and Engineering Delaware State University DoverDE19901-2277 United States Optical Science Center and Applied Research Delaware State University DoverDE19901-2277 United States Department of Mathematical Sciences Delaware State University DoverDE19901-2277 United States Department of Mathematics Faculty of Science King Abdulaziz University Jeddah21589 Saudi Arabia Science Program Texas a and M University at Qatar P. O. Box 23874 Doha Qatar

This paper reports dispersive optical soliton solutions that are modeled by Schrödinger-Hirota equation with spatio-Temporal dispersion in addition to group velocity dispersion. There are two types of nonlinear media studied in this paper. These are Kerr law and power law. Bright, dark and singular soliton solutions are secured along with their respective existence criteria. The method of undetermined coefficients is applied to retrieve these soliton solutions. © Copyright 2016 American Scientific Publishers All rights reserved.

关键词： Group velocity dispersion

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Raman study of lattice vibrations in type II superlattice InAs/InAs1-xSbx

arXiv

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arXiv 2017年

作者： Liu, Henan Zhang, Yong Steenbergen, Elizabeth H. Liu, Shi Lin, Zhiyuan Zhang, Yong-Hang Kim, Jeomoh Ji, Mi-Hee Detchprohm, Theeradetch Dupuis, Russell D. Kim, Jin K. Hawkins, Samuel D. Klem, John F. Optical Science and Engineering Graduate Program Department of Electrical and Computer Engineering University of North Carolina at Charlotte Charlotte NC United States Center for Photonics Innovation and School of Electrical Computer and EnergyEngineering Arizona State University Tempe AZ United States Center for Compound Semiconductors and School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA United States Sandia National Laboratories Albuquerque NM United States

InAs/InAs1-xSbx superlattice system differ distinctly from two well-studied superlattice systems GaAs/AlAs and InAs/GaSb, in terms of electronic band alignment, common-element at the interface, and phonon spectrum overlapping of the constituents. This fact leads to unique electronic and vibrational properties of the InAs/InAs1-xSbx system when compared to the other two systems. In this work, we report a polarized Raman study on the vibrational properties of the InAs/InAs1-xSbx SLs as well as selected InAs1-xSbx alloys, all grown on GaSb substrates by either MBE or MOCVD, from both growth surface and cleaved edge. In the SL, from the (001) backscattering geometry, an InAs-like LO mode is observed as the primary feature and its intensity is found to increase with increasing Sb composition;from the (110) cleaved edge backscattering geometry, an InAs-like TO mode is observed as the main feature in two cross-polarization configurations, but an additional InAs-like "forbidden" LO mode was observed in two parallel-polarization configurations. InAs1-xSbx alloys lattice-matched to the substrate (xSb ~ 0.09) grown by MBE were also found to exhibit the "forbidden" LO mode, implying the existence of some unexpected [001] modulation, but the strained xSb ~ 0.35 samples grown by MOCVD were found to behavior like a disordered alloy. The primary conclusions are (1) the InAs-like LO or TO mode could be either a confined or quasi-confined mode in the InAs layers of the SL or extended mode of the whole structure, depending on the Sb composition;(2) InAs/InAsSb and InAs/GaSb SLs exhibit significantly different behaviors in the cleaved edge geometry, but qualitatively similar in the (001) geometry;and (3) the appearance of the "forbidden" LO-like mode is a universal signature for SLs and bulk systems resulting from mixing of phonon modes due to structural modulation or symmetry reduction. Copyright © 2017, The Authors. All rights reserved.

关键词： III-V semiconductors

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