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Dissertations / Theses on the topic 'Lasers Industrial applications'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 July 2024

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1

BRAGLIA, ANDREA. "High Power Fiber Lasers for Industrial Applications." Doctoral thesis, Politecnico di Torino, 2013. http://hdl.handle.net/11583/2506061.

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Fiber lasers can be considered a revolutionary technology in the laser field thanks to their unique properties, such as high efficiency, simplicity, compactness and robustness. These features have allowed in the last ten years their outstanding growth both in scientific and industrial applications, eroding the market share of traditional laser sources like solid-state and gas lasers. Fiber lasers power scaling to the kilowatt range is now well established and, thanks to the fiber confinement, excellent output beam quality can be obtained, with a remarkable benefit for applications. Today, high

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2

Hopko, Sandra N. "Laser ultrasonic probe for industrial or high temperature applications." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/16433.

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3

Reppel, Julie-Ann. "Planar laser polarisation spectroscopy imaging in combustion /." Title page, abstract and table of contents only, 2003. http://web4.library.adelaide.edu.au/theses/09PH/09phr4259.pdf.

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4

Earl, Caroline Louise. "Surface modification by laser movement of molten material." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708982.

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5

Duty, Chad Edward. "Design, operation, and heat and mass transfer analysis of a gas-jet laser chemical vapor deposition system." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/17925.

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6

Chung, Yong Ho. "Synchrotron white beam topographic study of damage accompanying laser drilling." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/20122.

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7

El-Kurdi, Zeyad Mechanical &amp Manufacturing Engineering Faculty of Engineering UNSW. "Monitoring and control of the CO2 laser cutting process." Awarded by:University of New South Wales. School of Mechanical and Manufacturing Engineering, 2005. http://handle.unsw.edu.au/1959.4/21900.

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Laser cutting is one of the most important applications of laser in manufacturing industry; it is mainly used for sheet metal cutting. In laser cutting, performing real-time evaluation of laser cut quality is very important to the advancement of this process in industry. However, due to the dynamic nature of the laser cutting process specially when cutting ferrous alloys using oxygen as an assist gas, laser cut quality cannot be easily predicted; therefore, the quality inspection of the laser cut is performed by off line inspections of the edges of the metal by skilled operators. This methodol

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8

Wainner, Richard T. "An analytical and quantitative analysis of the laser-induced incandescence of soot." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/12422.

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9

Bruttomesso, Douglas Allen. "Laser ultrasonic techniques to determine the influence of geometric features on Rayleigh waves." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/21471.

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10

Kam, Weng Seng. "Laser surface alloying of copper with Ni-based hardfacing alloys for enhancing hardness and corrosion resistance." Thesis, University of Macau, 2017. http://umaclib3.umac.mo/record=b3691686.

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11

Jean, Daniel Louis. "Design and operation of an advanced laser chemical vapor deposition system with on-line control." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/16486.

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12

Fuhrman, Brian Thomas. "Fabrication of advanced thermionic emitters using laser chemical vapor deposition-rapid prototyping." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/17048.

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13

Elkhatib, Tarek Naim. "Design and operation of a dual-entry laser chemical vapor deposition rapid prototyping system." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/17705.

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14

Sanderson, Terry. "Thermoelastic modeling of laser generated ultrasound for nondestructive materials testing." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/18978.

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15

Baskiyar, Rajeev. "Response of Laser Welded Sandwich Panels Subject to Initial Velocity." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/BaskiyarR2007.pdf.

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16

Poulter, Michael Jon. "Solid-state lasers with joule-level pulse energies and kilowatt average powers for industrial applications." Thesis, University of Strathclyde, 2011. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25465.

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The work presented in this thesis is concerned with the development of commercial Nd:YAG laser systems for a number of specific industrial applications. Common to all of these applications is the need to scale toward joule-level pulse energies for adequate light-matter interaction. These applications are unusual in that they also require kilohertz pulse-repetitionfrequencies and therefore kilowatt average powers to enable commercially viable levels of yield and throughput. This thesis begins by defining the specific requirements for each of the target applications. Laser system development beg

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17

Iliopoulos, Vasileios. "Novel antennas on Si and organic substrates." Thesis, Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/15670.

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18

Owino, Joseph O. "Study of the propagation of Rayleigh waves in cement-based materials using laser ultrasonic techniques." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/32800.

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19

Yang, Wen Fu. "Laser cladding surface treatment for enhancement of mechanical properties." Thesis, Peninsula Technikon, 2003. http://hdl.handle.net/20.500.11838/1267.

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Thesis (MTech (Mechanical Engineering))--Peninsula Technikon, 2003<br>Systematic laser cladding experiments were performed using a mixture of a Nickel base alloy powder mixed with tungsten carbide powder (percentage contents of tungsten carbide from 10% to 40%) on EN8 steel substrate with pre-placed powder method. Laser cladding of the Nickel base alloy powder + 50% tungsten carbide powder on EN9 steel substrate was performed with powder injection method as well. A Finite Element Method for calculating the surface temperature distribution was used to help prediction of temperature

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20

Kumar, Mukund. "Laser assisted micro milling of hard materials." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41213.

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This thesis presents an investigation of novel laser assisted micromachining processes that addresses the limitations of micromachining of hard-to-machine materials. Two different laser assisted approaches are used to machine hard metals and high strength ceramics. For hard metals, the basic approach involves localized thermal softening of the workpiece material by focusing a solid-state continuous wave near infra-red laser beam in front of the micro milling tool (end mills of 0.1 to 0.5 mm diameter). By suitably controlling the laser power, spot size and scan speed, it is possible to produce

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21

Pearce, Darren John. "Effectiveness and efficiency of laser cut panels in daylighing applications." Thesis, Queensland University of Technology, 1999.

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22

Park, Jae-hyoung. "Process planning for laser chemical vapor deposition." Thesis, Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/18367.

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23

Nyamuda, Gibson Peter. "Design and development of an external cavity diode laser for laser cooling and spectroscopy applications." Thesis, Link to the online version, 2006. http://hdl.handle.net/10019/1146.

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24

Wang, Yujuan. "Sistema automatizado para gravação de estruturas fotônicas." Universidade Tecnológica Federal do Paraná, 2017. http://repositorio.utfpr.edu.br/jspui/handle/1/2896.

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CAPES<br>Este trabalho apresenta um sistema automatizado que foi desenvolvido com o objetivo de fabricar estruturas fotônicas por meio da técnica de escrita direta com pulsos de laser de femtossegundo. Tal técnica consiste em focalizar finamente o feixe de laser em substratos transparentes e movimentar o substrato em direções paralela e perpendicular em relação à direção de propagação do feixe de laser. Procedimentos de controle automatizado referente ao feixe de laser e à translação, de substrato foram implementados e integrados, resultando num sistema totalmente automatizado para a gravação

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25

Rajamure, Ravi Shanker. "Laser Surface Alloying of Refractory Metals on Aluminum for Enhanced Corrosion Resistance: Experimental and Computational Approaches." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc700029/.

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Aluminum (Al) and its alloys are widely used in various technological applications, mainly due to the excellent thermal conductivity, non-magnetic, ecofriendly, easy formability and good recyclability. However due to the inferior corrosion resistance its applications are hampered in various engineering sectors. Besides, the corrosion related failures such as leakage of gas from pipeline, catastrophic breakdown of bridges and fire accidents in processing plants further puts the human life in jeopardy. Within the United States over $ 400 billion dollars per year are spent over research to unders

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26

Gray, Alyn M. "An Initial Study of Binary and Ternary Ti-based Alloys Manufactured Using Laser Engineered Net Shaping (LENSTM)." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc822823/.

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In this study an initial assessment of the composition – microstructure – property relationships in binary and ternary Ti – based systems are made possible using LENSTM technology. Laser Engineering Net Shaping (LENSTM), a rapid prototyping, directed laser deposition methodology of additive manufacturing (AM) was used to create bulk homogenous specimens that are compositionally graded. Compositionally graded specimens were made possible by incorporating elemental blends of powder during the LENSTM process. While there have been numerous studies assessing the influence of common elements (e.g.,

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27

Greeff, Gabriel Pieter. "A study for the development of a laser tracking system utilizing multilateration for high accuracy dimensional metrology." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/3181.

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MScEng<br>Thesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Accurate dimensional measurement devices are critical for international industrial competitiveness for South Africa. An overview of all the necessary components of a laser tracking system using a multilateration technique for very accurate dimensional metrology is presented. A prototype laser tracker station was built to further investigate this type of system. The prototype successfully tracks a target within a volume of at least 200 200 200 mm3, approximately 3

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28

Matsusaki, Eduardo Hiroshi. "Metodologia para medição de tensões em virabrequins utilizando ESPI." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264081.

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Orientador: Auteliano Antunes dos Santos Júnior<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-18T19:03:51Z (GMT). No. of bitstreams: 1 Matsusaki_EduardoHiroshi_M.pdf: 16938577 bytes, checksum: 51152fe274507619364344f4ec28e4b9 (MD5) Previous issue date: 2009<br>Resumo: Tensões mecânicas estão entre as principais causas de falhas de componentes estruturais. A medição de tais tensões pode ser feita com técnicas que relacionam alguma variável física a tensão existente. Técnicas destrutivas podem ser usadas p

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29

Zelgowski, Julien. "Etude et optimisation du procédé de gravure par laser à fibre femtoseconde dédié aux applications industrielles et médicales." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAD037/document.

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L’avènement des technologies lasers femtoseconde utilisant une fibre optique comme milieu amplificateur incite les industriels à se renseigner sur cette technologie. Dans ce contexte, et dans le cadre du projet Futures et Ruptures, cette thèse se propose de caractériser une nouvelle source femtoseconde, le Tangerine d’Amplitude Systèmes. Utilisant les capacités de ce laser, et avec la collaboration d’IREPA LASER, nous feront une étude comparative avec les lasers femtoseconde déjà existant en s’appuyant sur l’état de l’art, l’optique non-linéaire et quelques simulations d’ablation. L’améliorati

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30

Brice, David. "An Assessment of Uncommon Titanium Binary Systems: Ti-Zn, Ti-Cu, and Ti-Sb." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc799482/.

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The current study focuses on phase stability and evolution in the titanium-zinc titanium-copper and titanium-antimony systems. The study utilized the Laser Engineering Net Shaping (LENS™) processing technique to deposit compositionally graded samples of three binary system in order to allow the assessment of phase stability and evolution as a function of composition and temperature the material is subjected to. Through LENS™ processing it was possible to create graded samples from Ti-xSb (up to 13wt%) and Ti-xCu (up to 16wt%). The LENS™ deposited gradient were solutionized, and step quenche

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31

Miller, Ross Alan. "Thermo-Mechanical Selective Laser Assisted Die Transfer." Thesis, North Dakota State University, 2011. https://hdl.handle.net/10365/29859.

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Laser Induced Forward Transfer (LIFT) techniques show promise as a disruptive technology which will enable the placement of components smaller than what conventional pick-and-place techniques are capable of today. Limitations of current die-attach techniques are presented and discussed and present the opportunity for a new placement method. This study introduces the Thermo-Mechanical Selective Laser Assisted Die Transfer (tmSLADT) process and is an application of the unique blistering behavior of a dynamic releasing layer when irradiated by low energy focused UV laser pulses. The potential of

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32

Mikler, Calvin. "Laser Additive Manufacturing of Magnetic Materials." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1011873/.

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A matrix of variably processed Fe-30at%Ni was deposited with variations in laser travel speeds as well and laser powers. A complete shift in phase stability occurred as a function of varying laser travel speed. At slow travel speeds, the microstructure was dominated by a columnar fcc phase. Intermediate travel speeds yielded a mixed microstructure comprised of both the columnar fcc and a martensite-like bcc phase. At the fastest travel speed, the microstructure was dominated by the bcc phase. This shift in phase stability subsequently affected the magnetic properties, specifically saturation m

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33

Reppel, Julie-Anne. "Theoretical investigations of advanced optical systems for solar and artificial light deflection in large commercial buildings." Thesis, Queensland University of Technology, 1997.

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34

Rogge, Matthew Douglas. "In-process sensing of weld penetration depth using non-contact laser ultrasound system." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31698.

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Thesis (Ph.D)--Mechanical Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Ume, Charles; Committee Member: Chen, Ye-Hwa; Committee Member: Michaels, Jennifer; Committee Member: Sadegh, Nader; Committee Member: Vachtsevanos, George. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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35

Svedberger, Johan, and Jonas Andersson. "Laser scanning in manufacturing industries : The potential and usability of laser scanning for industrial applications." Thesis, KTH, Industriell produktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-134954.

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Making mistakes or discovering errors too late in the factory layout process is very costly. Unfortunately, the layouts aren’t always accurate or updated which creates a degree of uncertainty when it comes to installation of new equipment and rebuilding facilities. It also leads to a lot of waste in movement when employees has to go out in production to perform measurements, take pictures and take notes in order to remember important details to avoid errors. Lasers in land and engineering surveying instruments have been widely used for the last 30 years. A natural development has been to add a

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36

Joshi, Sameehan Shrikant. "Non-Isothermal Laser Treatment of Fe-Si-B Metallic Glass." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1062821/.

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Metallic glasses possess attractive properties, such as high strength, good corrosion resistance, and superior soft magnetic performance. They also serve as precursors for synthesizing nanocrystalline materials. In addition, a new class of composites having crystalline phases embedded in amorphous matrix is evolving based on selective crystallization of metallic glasses. Therefore, crystallization of metallic glasses and its effects on properties has been a subject of interest. Previous investigations from our research group related to laser assisted crystallization of Fe-Si-B metallic glass (

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37

Apte, Paul. "Laser beam characterisation for industrial applications." Thesis, Loughborough University, 2003. https://dspace.lboro.ac.uk/2134/33964.

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This thesis describes the theory, development and applications of laser beam characterisation for industrial laser materials processing systems. Descriptions are given of novel forms of beam diagnostic systems and their integration into highly automated industrial tools. Work is also presented that has contributed to the new ISO standard on beam characterisation. Particular emphasis is given to excimer laser applications and UV micromachining.

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38

Wu, Tsun-Yen. "Prediction and experimental validation of weld dimensions in thin plates using superimposed laser sources technique." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41106.

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The objective of this research is to develop a method to evaluate important weld dimensions in thin plates by using laser generated ultrasounds and EMAT receiver. The superimposed laser sources (SLS) technique is developed to generate narrowband Lamb waves with fixed wavelengths in thin plates. The method permits the flexibility of selecting desired wavelength. The signal processing procedure that combines wavenumber-frequency (k-w) domain filtering and synthetic phase tuning (SPT) is used to further reduce the complexity of Lamb waves. The k-w domain filtering technique helps to filter out th

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39

Nilsson, Klas. "Industrial applications of high power CO2-laser welding." Licentiate thesis, Luleå, 1994. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18201.

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40

Smowton, P. M. "The frequency stabilisation of laser diodes for industrial applications." Thesis, Cardiff University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319933.

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41

LIU, YU. "Laser Devices and Systems for Industrial and Biomedical Applications." Doctoral thesis, Politecnico di Torino, 2016. http://hdl.handle.net/11583/2644059.

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The PhD activity, from which this thesis is taken, has been aimed at the design and development of optical components and subsystems for industrial and biomedical laser applications. Industrial-grade high-power laser market, traditionally dominated by gas and solid state lasers, is currently being revolutionized by two new devices, namely fiber and direct diode lasers, which are partly competing and partly complementary. On the one hand, Fiber Lasers (FLs) make use of rare-earth doped specialty fibers to converted the radiation from semiconductor laser modules (the “pump” source) into a hig

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42

Geving, Brad David. "Enhancement of stereolithography technology to support building around inserts." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/16799.

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43

Beddows, D. C. S. "Industrial applications of remote and in-situ laser induced breakdown spectroscopy." Thesis, Swansea University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636067.

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The major objectives of the work reported in this thesis was the development of spectrum collection and analysis procedures for potential industrial applications of Laser Induced Breakdown Spectroscopy, using either a single-fibre probe or a telescopic "point-and-shoot" arrangement. Traditionally, only univariate methods (spectral line intensity vs elemental concentration) have been considered for data analysis in such applications. The univariate approach was repeated here but then replaced with more sophisticated multivariate analysis algorithms. They are well established in e.g. Raman and F

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44

Teh, Peh Siong. "High performance pulsed fiber laser systems for scientific & industrial applications." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/383623/.

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This thesis reports an investigation of the power scaling of pulsed fiber laser systems towards the hundreds of Watts regime whilst keeping the impact of fiber nonlinearities such as Stimulated Raman Scattering (SRS) at a manageable level. Two regimes of pulsed operation are investigated: the nanosecond pulse regime and the picosecond pulse regime. Some of the work reported in this thesis was carried out in collaboration with SPI Lasers and Institute for Manufacturing, University of Cambridge under the TSB funded SMART LASER programme. In the nanosecond regime, two kinds of MOPA configurations

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45

Röwekämper, Jörg [Verfasser], and Wolfram [Akademischer Betreuer] Burgard. "Highly accurate laser based position estimation and planning in industrial robot applications." Freiburg : Universität, 2017. http://d-nb.info/1147680973/34.

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46

Lim, Yong Chae. "Development and Demonstration of Femtosecond Laser Micromachining Processes for Biomedical Applications." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1313505193.

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47

Lasagni, Andrés F., Carsten Gachot, Kim E. Trinh, et al. "Direct laser interference patterning, 20 years of development: From the basics to industrial applications." SPIE, 2017. https://tud.qucosa.de/id/qucosa%3A34881.

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Starting from a simple concept, transferring the shape of an interference pattern directly to the surface of a material, the method of Direct Laser Interference Patterning (DLIP) has been continuously developed in the last 20 years. From lamppumped to high power diode-pumped lasers, DLIP permits today for the achievement of impressive processing speeds even close to 1 m²/min. The objective: to improve the erformance of surfaces by the use of periodically ordered microand nanostructures. This study describes 20 years of evolution of the DLIP method in Germany. From the structuring of thin metal

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48

Brooke, Stephen John. "The application of high power lasers to the welding of tee section joints in ship production." Thesis, University of Newcastle Upon Tyne, 1987. http://hdl.handle.net/10443/830.

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The use of computers by naval architects has revolutionised ship design and -construction management. The use of high power laser technology could similarly revolutionise production processes to produce a quantum leap in productivity. Facilitating low heat input materials processing, the laser is suited to various cutting, welding and heat treatment applications in shipbuilding to increase productivity through improved product accuracy. From these processes, the Author has concentrated on the application of high power lasers to the welding of tee section joints - the most common joint configur

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49

Coetzee, A., and Niekerk T. I. Van. "LabVIEW application with embedded Lua scripting for a laser based measuring machine." Journal for New Generation Sciences, Vol 11, Issue 1: Central University of Technology, Free State, Bloemfontein, 2013. http://hdl.handle.net/11462/625.

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Published Article<br>This paper presents the work on the development of software for an industrial laser based measuring machine. The goal being not only for a working application, but also to optimise the development process and ease future maintenance of the software. LabVIEW with its graphical method of programming allows engineers to easily create large software applications to control industrial processes and machines. This software if not properly designed can lead to stability and maintenance problems. The experience gained from developing, maintaining and improving a LabVIEW applicatio

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50

Harrison, Paul Martin. "Industrial thin film processing applications of high peak power, high average power Nd:YAG laser systems." Thesis, Heriot-Watt University, 2012. http://hdl.handle.net/10399/2613.

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Three high speed thin film patterning applications have been investigated using a high average power, high peak power laser system. Throughout this work the spatial intensity profile of the laser output was tailored to produce more efficient results. The first application involved the development of rapid laser patterning of an indium tin oxide layer on a glass substrate in order to generate transparent electrodes for a flat panel display. This work showed that the stitch line that occurs in-between adjacent laser pulses was formed by redeposition of material via the plume generated by the sec

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