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Dissertations / Theses on the topic 'ELECTRON LASER'

Author: Grafiati

Published: 11 September 2023

Last updated: 31 July 2025

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1

Bajlekov, Svetoslav. "Towards a free-electron laser driven by electrons from a laser-wakefield accelerator : simulations and bunch diagnostics." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:99f9f13a-d0c2-4dd8-a9a4-13926621c352.

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This thesis presents results from two strands of work towards realizing a free-electron laser (FEL) driven by electron bunches generated by a laser-wakefield accelerator (LWFA). The first strand focuses on selecting operating parameters for such a light source, on the basis of currently achievable bunch parameters as well as near-term projections. The viability of LWFA-driven incoherent undulator sources producing nanojoule-level pulses of femtosecond duration at wavelengths of 5 nm and 0.5 nm is demonstrated. A study on the prospective operation of an FEL at 32 nm is carried out, on the basis

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2

Restivo, Rick A. "Free electron laser weapons and electron beam transport." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA333358.

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3

Stetler, Aaron M. "Active vibration control for free electron lasers." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Dec%5FStetler.pdf.

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Thesis (M.S. in Applied Physics)--Naval Postgraduate School, December 2003.<br>Thesis advisor(s): Bruce C. Denardo, Thomas J. Hofler. Includes bibliographical references (p. 81). Also available online.

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4

Dearden, Geoffrey. "An industrial free electron laser." Thesis, University of Liverpool, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240478.

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5

Petichakis, Christos. "The Cerenkov free electron laser." Thesis, University of Liverpool, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399079.

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This thesis reports on an investigation into Cerenkov Free Electron Lasers. These devices are basically travelling wave tubes but having a dielectrically lined cylinder as the slow wave structure rather than a helix. If an electron beam is injected into the centre of this structure, an interaction between the electrons and the electromagnetic (e-m) TMo I mode can occur which can lead to amplification of the e-m wave. Two different systems have been constructed. The first one was designed to operate as an oscillator at 12.4GHz and used a rectangular X-band waveguide microwave coupler. It was th

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6

Evtushenko, Pavel. "Electron beam diagnostic at the ELBE free electron laser." Doctoral thesis, [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972779876.

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7

Evtushenko, P. "Electron Beam Diagnostic at the ELBE Free Electron Laser." Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-28802.

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8

Evtushenko, P. "Electron Beam Diagnostic at the ELBE Free Electron Laser." Forschungszentrum Rossendorf, 2004. https://hzdr.qucosa.de/id/qucosa%3A21707.

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9

Mitchell, Ethan D. "Multiple beam directors for naval free electron laser weapons." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Mar%5FMitchell.pdf.

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10

Massey, Daniel S. "Simulation of DARMSTADT Free Electron Laser and a comparison of high gain Free Electron Laser." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA387394.

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11

You, Yan. "Pulsed Laser Injected Enhancement Cavity for Laser-electron Interaction." Phd thesis, Université Paris Sud - Paris XI, 2014. http://tel.archives-ouvertes.fr/tel-01011958.

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X-ray diﬀraction and scattering, X-ray spectroscopy, and X-ray crystallography are widely used in the life sciences, material science, and medical diagnosis. High-quality and high-brightness X-rays are a strong requirement to improve applications. Inverse Compton scattering (ICS) X-ray source has attracted great interests worldwide lately. To significantly enhance the average X-ray photon flux, a compact electron storage-ring combined with a high finesse optical enhancement cavity (OEC) can be utilized. In such a system, the collision rate between the electron beam and the laser pulse is great

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12

Williams, Robert E. "Naval electric weapons : the electromagnetic railgun and free electron laser /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FWilliams.pdf.

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13

Ghaith, Amin. "Towards compact and advanced Free Electron Laser." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS333/document.

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Les lasers à électrons libres (LEL) X sont aujourd'hui des sources lumineuses cohérentes et intenses utilisées pour des investigations multidisciplinaires de la matière. Un nouveau schéma d'accélération, l'accélérateur laser plasma (LPA), est maintenant capable de produire une accélération de quelques GeV/cm, bien supérieure à celle des linacs radiofréquence. Ce travail de thèse a été mené dans le cadre des programmes de R&D du projet LUNEX5 (laser à électrons libres utilisant un nouvel accélérateur pour l’exploitation du rayonnement X de 5e génération) de démonstrateur LEL avancé et compa

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14

Yan, Xiaoling. "Ultra-fast photon and electron beam diagnostics for free electron lasers." Thesis, Abertay University, 2003. https://rke.abertay.ac.uk/en/studentTheses/4a05ee9c-2ddb-434f-b2a1-0ad483394db8.

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Characterisation of the ultra-short optical pulses produced by infrared ffee-electron lasers (FELs) is an important task, not only for the further development of free electron lasers and their theory, but also for their operation as a research tool. The setting up and optimisation of the FEL requires effective and reliable diagnostics tools. This thesis presents techniques for the measurement of sub-picosecond optical and electron pulses. A range of techniques is developed that allows measurements of the electric field of both optical pulses and electron bunches to be made with an accuracy of

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15

MacKay, John Stuart. "The United Kingdom free electron laser." Thesis, Heriot-Watt University, 1987. http://hdl.handle.net/10399/1049.

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16

Quirk, Eamonn George. "A 'pre-bunched' free electron laser." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284151.

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17

Xu, Junliang. "Ultrafast imaging: laser induced electron diffraction." Diss., Kansas State University, 2012. http://hdl.handle.net/2097/13616.

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Doctor of Philosophy<br>Department of Physics<br>Chii-Dong Lin<br>Imaging of molecules has always occupied an essential role in physical, chemical and biological sciences. X-ray and electron diffraction methods routinely achieve sub-angstrom spatial resolutions but are limited to probing dynamical timescales longer than a picosecond. With the advent of femtosecond intense lasers, a new imaging paradigm emerges in last decade based on laser-induced electron diffraction (LIED). It has been placed on a firm foundation by the quantitative rescattering theory, which established that large-angle e

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18

Wenthaus, Lukas [Verfasser]. "Laser-Assisted Photoemission from Solids with Free Electron Lasers / Lukas Wenthaus." München : Verlag Dr. Hut, 2018. http://d-nb.info/1170473407/34.

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19

Hyldgaard, Per. "Noneqilibrium Electron-Electron Scattering in Possible Far-Infrared Quantum Cascade Laser." The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1392908012.

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20

Hyldgaard, Per. "Nonequilibrium electron-electron scattering in possible far-infrared quantum cascade laser /." The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487929745336983.

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21

Anania, Maria Pia. "Towards a free-electron laser driven by a laser wakefield accelerator." Thesis, University of Strathclyde, 2014. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25451.

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The free-electron laser (FEL) is a powerful source of tuneable coherent radiation that currently demands kilometre-scale beam lines for high-energy vacuum ultraviolet (VUV) and X-ray output. Driving an FEL with a laser wakefield accelerator (LWFA) electron beam would radically reduce the size of such systems as well as delivering ultra-short duration radiation pulses. In this thesis, the production and optimal transport of high-quality electron beams in an LWFA and the feasibility of using such beams to drive a VUV FEL has been investigated. The ALPHA-X LWFA uses a 25 TW femtosecond laser puls

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22

Lehe, Rémi. "Improvement of laser-wakefield accelerators: towards a compact free electron laser." Palaiseau, Ecole polytechnique, 2014. https://tel.archives-ouvertes.fr/tel-01088398/document.

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Lorsque l'on focalise une impulsion laser courte et intense dans un gazsous-dense, celle-ci peut accélérer une fraction des électrons du gaz,et ainsi générer un faisceau d'électrons ayant une énergie de quelquescentaines de MeV. Ce phénomène, connu sous le nom d'accélérationlaser-plasma, pourrait avoir de nombreuses applications,notamment pour la réalisation de sources de rayons Xultra-intenses appelées lasers à électrons libres (LEL). Cependant,ces applications nécessitent que le faisceau d'électrons ait uneexcellente qualité (faible divergence, faible émittance et faible dispersion en énergi

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23

Short, Lee R. "Damage produced by the free electron laser." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA366898.

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Thesis (M.S. in Applied Physics) Naval Postgraduate School, June 1999.<br>"June 1999". Thesis advisor(s): William B. Colson, Robert L. Armstead. Includes bibliographical references (p. 57). Also available online.

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24

McGinnis, Roger D. "Free Electron Laser development for directed energy." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA387898.

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Dissertation (Ph.D. in Physics) Naval Postgraduate School, Dec. 2000.<br>Dissertation advisor, Colson, William B. "December 2000." Includes bibliographical references (p. 131-133). Also available in print.

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25

Malton, S. P. "Laser interactions with high brightness electron beams." Thesis, University College London (University of London), 2007. http://discovery.ucl.ac.uk/1444964/.

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The International Linear Collider will be a high-precision machine to study the next energy frontier in particle physics. At the TeV energy scale, the ILC is expected to deliver luminosities in excess of 1034 cni" 2s_1. In order to achieve this, beam conditions must be monitored throughout the machine. Measurment of the beam emittance is essential to ensuring that the high luminosity can be provided at the interaction point. At the de sign beam sizes in the ILC beam delivery system, the Laserwire provides a non-invasive real-time method of measuring the emittance by the method of inverse Compt

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26

Huo, Yijie. "Experimental study of laser produced electron beam." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/1858.

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Thesis (M.S.) -- University of Maryland, College Park, 2004.<br>Thesis research directed by: Dept. of Electrical and Computer Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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27

Reed, Valerie Christine. "Electron motion in ultra-intense laser fields." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293544.

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28

Harvey, Christopher. "Electron dynamics in high-intensity laser fields." Thesis, University of Plymouth, 2010. http://hdl.handle.net/10026.1/301.

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We consider electron dynamics in strong electromagnetic fields, such as those expected from the next generation of high-intensity laser facilities. Beginning with a review of constant classical fields, we demonstrate that the electron motion (as given by the Lorentz force equation) can be divided into one of four Lorentz invariant cases. Parameterising the field tensor in terms of a null tetrad, we calculate the radiative energy spectrum for an electron in crossed fields. Progressing to an infinite plane wave, we demonstrate how the electron orbit in the average rest frame changes from figure-

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29

McKenna, Paul. "Electron and laser interactions with positive ions." Thesis, Queen's University Belfast, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326350.

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30

Penman, Charles. "Theoretical studies of the free-electron laser." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47218.

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31

Wong, Liang Jie. "Laser-driven electron acceleration in infinite vacuum." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/66479.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 83-88).<br>I first review basic models for laser-plasma interaction that explain electron acceleration and beam confinement in plasma. Next, I discuss ponderomotive electron acceleration in infinite vacuum, showing that the transverse scattering angle of the accelerated electron may be kept small with a proper choice of parameters. I then analyze the direct (a.k.a. linear) acceleration of an electro

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32

Robinson, David Jonathan. "Atomic electron dynamics in intense laser fields." Thesis, Queen's University Belfast, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.675426.

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Electron dynamics in laser-driven one- and two-electron atoms and ions are probed through numerical integration of the full -dimensional, time-dependent Schro"dinger Equation. Physical observables, such as ionization rates and the spectrum of harmonics generated by the system, are extracted from the wavefunction. For an atom in a one-colour, linearly polarized laser field, wavepackets ejected at certain times will recoillide with the core, generating harmonics of the driving field. The harmonic spectrum is calculated using HELIUM and used to benchmark those from the time-dependent R-matrix (TD

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33

Gillingham, David R. "Free electron laser single-particle dynamics theory." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA246245.

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Thesis (M.S. in Physics)--Naval Postgraduate School, December 1990.<br>Thesis Advisor(s): Colson, William B. Second Reader: Maruyama, Xavier K. "December 1990." Description based on title screen as viewed on March 31, 2010. DTIC Identifier(s): Free Electron Lasers, Computerized Simulations, Parmela Computer Programs, Cray Computers, Theses. Author(s) subject terms: Free Electron Lasers, Computerized Simulation. Includes bibliographical references (p. 52-53). Also available in print.

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34

Cortelli, Giorgio. "Ultrafast electron diffraction on materials exposed to intense free electron laser pulses." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19305/.

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The advent of Free Electron Lasers (FELs) has opened unprecedented opportunities for the study of transient states of matter. The use of the seeding technique, developed at the FERMI FEL in Trieste (Italy), pushed further the frontier allowing to perform pump-probe experiments with femtosecond time resolution. FELs permit shedding light onto unexplored non-equilibrium dynamics and processes in matter. In this thesis, a pioneering setup for monitoring sub-picosecond atomic structure changes in materials is described. The FEL is used as an isochoric pump while a 100 keV compressed electron bunch

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35

Armstrong, G. S. J. "Electron dynamics of one- and two-electron atoms in intense laser fields." Thesis, Queen's University Belfast, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.546004.

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36

Shen, Nainn-Tzuu. "Evolution of the electron beam envelope in a free electron laser beamline." Thesis, Monterey, California: Naval Postgraduate School, 2013. http://hdl.handle.net/10945/39013.

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Approved for public release; distribution is unlimited.<br>The free electron laser (FEL) is a new generation of laser whose development motivates further research in basic and applied physics. Unlike a conventional laser that uses a gas or solid state gain medium, the FEL gain medium is a relativistic electron beam produced by a particle accelerator. This thesis will explore electron beam dynamics in an FEL, including the beam envelope equation, which will help us understand the evolution of electron betatron motion in the undulator. Dipole magnets, quadrupoles, and solenoids play important ro

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37

Maroju, Praveen Kumar [Verfasser], and Giuseppe [Akademischer Betreuer] Sansone. "Attosecond pulse shaping at a seeded free-electron laser : : towards attosecond time-resolved experiments at the free-electron lasers." Freiburg : Universität, 2021. http://d-nb.info/1239556527/34.

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38

Hannon, Fay. "A high average-current electron source for the Jefferson Laboratory free electron laser." Thesis, Lancaster University, 2008. http://eprints.lancs.ac.uk/76588/.

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The spectral output power from the Jefferson Laboratory infra-red free electron laser is primarily limited by the performance of the electron injector. Free electron laser power is directly proportional to the electron beam current and at present the electron injector is limited to 10mA average current. To date the highest laser power achieved has been 14.2kW and the next goal is to reach 100kW. For this to occur a new electron injector has been designed that is capable of producing over 100mA average current. This thesis describes an investigation into the behaviour of this injector through s

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39

Tzoufras, Michail. "Generation of multi-giga-electron-volt monoenergetic electron beams via laser wakefield acceleration." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1634233741&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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40

Kamps, Thorsten. "Monitoring the electron beam position at the TESLA Test Facility Free Electron Laser." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2000. http://dx.doi.org/10.18452/14502.

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Der Betrieb eines Freien Elektronen Lasers (FEL), bei dem die spontan emittierte Undulatorstrahlung ueber Wechselwirkung mit dem Elektronenstrahl selbst verstaerkt wird, setzt eine praezise Ausrichtung des Elektronenstrahls mit dem Photonenstrahl voraus. Um den Ueberlapp von Elektronen-und Photonenstrahl zu gewaehrleisten, wurde ein neuartiger Typ von Wellenleiter-Strahllagemonitor entwickelt, der in eine Vakuumkammer des Undulators des FELs der TESLA Test Facility (TTF) integriert ist. Vier um das Strahlrohr verteilte Wellenleiter koppeln ueber schmale Schlitze einen Bruchtei

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41

Ng, Ivan Y. C. "A free electron laser weapon for sea archer." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA401554.

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Thesis (M.S. in Applied Physics) Naval Postgraduate School, Dec. 2001.<br>Thesis advisor(s): Colson, William B.; Armstead, Robert L. "December 2001." Includes bibliographical references (p. 57-58). Also available in print.

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42

Neumann, Jonathan G. "Laser switched electron beam modulation with terahertz applications." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/2437.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2005.<br>Thesis research directed by: Electrical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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43

Tang, Yew Fei. "Electron field emission from laser crystallised amorphous silicon." Thesis, University of Surrey, 2003. http://epubs.surrey.ac.uk/843179/.

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Flat panel displays based on electron field emission can provide the benefits of the high resolution of a cathode ray tube display while possessing the portability of a liquid crystal display. To date, the problem with a field emission flat panel display based on silicon is that it usually involves complex photolithography processing, making it too complex and expensive to be commercially viable. In this thesis, the emphasis of the research is to fabricate a three terminal silicon device for flat panel display based on field emission technology without using photolithography processes. Laser c

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44

Kampouridis, Anastasios. "Laguerre-Gaussian modes in the free electron laser." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Jun%5FKampouridis.pdf.

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Thesis (M.S. in Physics)--Naval Postgraduate School, June 2007.<br>Thesis Advisor(s): William B. Colson, Robert L. Armstead. "June 2007." Includes bibliographical references (p. 71-72). Also available in print.

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45

Zimmer, Aaron A. "Terahertz free-electron laser optical design and simulation." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/5328.

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Approved for public release; distribution is unlimited<br>The Free Electron Laser (FEL) provides a versatile method for producing laser light. Traditionally, FELs are complicated in design and occupy large research facilities. The primary goal of this thesis is to investigate a particular FEL design that is small in size and operates in the terahertz (THz) frequency regime. The optics materials requirements are explored for power levels ranging from mW to kW. Additionally, as part of a simpler design and in spite of the large amount of diffraction present at THz wavelengths, a waveguide

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46

Kiel, David H. "Two nonlinear models of the Free Electron Laser." Thesis, Monterey, California. Naval Postgraduate School, 1990. http://hdl.handle.net/10945/30622.

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Approved for public release, distribution unlimited<br>The dynamics of the Free Electron Laser are governed by Maxwell's equations which causes many highly nonlinear regimes to exist in Free Electron Laser Physics. This thesis will examine two such areas and develop simple models to describe the highly dynamic and rich behavior two of these regimes. In the strong-field, high current regime, the Free Electron Laser driving current can be modeled by a single macroparticle representing the trapped electrons. When the trapped electrons act collectively as a macroparticle representing the trapped e

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47

Pogue, Conor Michael. "Super-radiant free electron laser measurement and detection." Thesis, Monterey, California: Naval Postgraduate School, 2013. http://hdl.handle.net/10945/37696.

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Approved for public release; distribution is unlimited<br>A free electron laser (FEL) is a type of laser that use relativistic electron bunches and a periodic magnetic field to generate coherent radiation. These types of lasers are of interest to the Navy because they can operate at the high average power with excellent optical beam quality that is needed in many military applications. A current project between the U.S. Navy and Niowave Inc. is to create a super-radiant FEL that uses superconducting spoke cavities for the electron accelerating structures. These types of cavities have never bee

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48

Pogue, Conor M. "Terahertz free electron laser: design, simulation and analysis." Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/44646.

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Approved for public release; distribution is unlimited<br>Terahertz (THz) radiation is a portion of the electromagnetic spectrum with many potential uses but without a wide availability of powerful sources. The free electron laser (FEL) has been demonstrated to produce intense, coherent THz radiation. This dissertation explores a novel THz FEL oscillator design that is tunable within a wavelength range of ~60 micrometers to ~130 micrometers and could produce up to ~2 kW average output power. It utilizes superconducting spoke cavities for the accelerating structures to generate an 8 MeV electro

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49

Cheng, Chunwei. "The development of the UK free-electron laser." Thesis, Heriot-Watt University, 1987. http://hdl.handle.net/10399/1016.

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50

Findlay, Peter Charles. "Free electron laser spectroscopy of narrow gap semiconductors." Thesis, Heriot-Watt University, 2000. http://hdl.handle.net/10399/528.

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