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Dissertations / Theses on the topic 'Ultrashort Pulse'

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Published: 4 June 2021
Last updated: 10 March 2023

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1

Bosman, Gurthwin Wendell. "Ultrashort optical pulse characterization." Thesis, Link to the online version, 2008. http://hdl.handle.net/10019/764.

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2

Jung, Isabella D. "Limits of ultrashort pulse generation /." Zürich, 1997. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=12399.

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3

Sutter, Dirk Hartwig. "New frontiers of ultrashort pulse generation /." Zürich, 2000. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13543.

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4

Wilcox, Keith G. "Ultrashort pulse surface emitting semiconductor lasers." Thesis, University of Southampton, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434098.

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5

Lee, Dongjoo. "Ultra-broadband phase-matching ultrashort-laser-pulse measurement techniques." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-07032007-113912/.

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Thesis (Ph. D.)--Physics, Georgia Institute of Technology, 2008.<br>First, Phillip, Committee Member ; Adibi, Ali, Committee Member ; Raman, Chandra, Committee Member ; Buck, John, Committee Member ; Trebino, Rick, Committee Chair.
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6

Shreenath, Aparna Prasad. "Measuring broadband, ultraweak, ultrashort pulses." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-07112005-171551/.

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Thesis (Ph. D.)--Physics, Georgia Institute of Technology, 2006.<br>Trebino, Rick, Committee Chair ; First, Phillip, Committee Member ; Ralph, Stephen, Committee Member ; Kennedy, Brian, Committee Member ; Buck, John, Committee Member.
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7

Amat-Roldan, Ivan. "Ultrashort laser pulse measurement for multiphoton microscopy." Doctoral thesis, Universitat Politècnica de Catalunya, 2013. http://hdl.handle.net/10803/128800.

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In this thesis, we address specific efforts towards developing the precise aspect of ultrashort laser pulse measurement in the context of biomedical research. The motivation for pursuing these new developments was triggered by the vision of developing fundamental tools that will enable to control matter by means of light with exquisite precision with the added difficulty of being next to biological samples which are extremely sensitive and fragile. For this, light matter interaction needs to be extremely well controlled to avoid undesired effects, like cell damage due to the high peak intensit
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8

Zhang, Wei. "Ultrashort pulse laser micromaching of metallic materials." Thesis, University of Liverpool, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.633011.

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During the last two decades, micromaching materials with ultrashort pulser lasers with pulse duration in the picosecond (ps) and femtosecond (fs) range opened up the possibility of material micro structuring of material removal with high precision and minimal damage. Due to the ultra-high intensity of focussed femtosecond pulses, nonlinear absorption can be induced at the focus leading to highly localised material ablation. The work presented in this thesis is primarily concerned with the process of femtosecond laser ablation or micromachining of metallic materials with a 180fs infra-red (775m
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9

Stein, Gregory Joseph. "Modeling of nonlinear ultrashort optical pulse propagation." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101475.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 97-100).<br>I present a numerical package, written in MATLAB, which provides a simplified scripting interface for simulating a host of ultrashort pulse propagation phenomena. With the proliferation of ultrashort laser technolog
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10

Hu, Youfang. "Ultrashort pulse generation from diode laser devices." Thesis, Aston University, 2005. http://publications.aston.ac.uk/8009/.

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High power pulses generation is one of the major topics discussed in the thesis. Although gain switching is the simplest way for ultrashort pulse generation, it proves to be quite effective to deliver high energy pulses on condition that the pumping pulses with extremely fast rising time and high enough amplitude are applied on specially designed pulse generators. In the experiment on a grating-coupled surface emitting laser (GCSEL), peak power as high as 1W was achieved even when its spectral bandwidth was controlled within 0.2nm. Another experiment shows violet picosecond pulses with peak po
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11

Wang, Ziyang. "Next Generation Ultrashort-Pulse Retrieval Algorithm for Frequency-Resolved Optical Gating: The Inclusion of Random (Noise) and Nonrandom (Spatio-Temporal Pulse Distortions) Error." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-04122005-224257/unrestricted/wang%5Fziyang%5F200505%5Fphd.pdf.

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Thesis (Ph. D.)--Physics, Georgia Institute of Technology, 2005.<br>You, Li, Committee Member ; Buck, John A., Committee Member ; Kvam, Paul, Committee Member ; Kennedy, Brian, Committee Member ; Trebino, Rick, Committee Chair. Vita. Includses bibliographical references.
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12

Röser, Fabian. "Power scaling of ultrashort pulse fiber laser systems." Norderstedt Books on Demand GmbH, 2009. http://d-nb.info/1000542688/04.

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13

Fulford, Benjamin S. "An industrial ultrashort pulse thin slab laser amplifier." Thesis, Heriot-Watt University, 2015. http://hdl.handle.net/10399/3238.

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14

Kilen, I., S. W. Koch, J. Hader, and J. V. Moloney. "Non-equilibrium ultrashort pulse generation strategies in VECSELs." OPTICAL SOC AMER, 2017. http://hdl.handle.net/10150/624046.

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Vertical external cavity surface emitting lasers are ideal testbeds for studying nonlinear many-body systems driven far from equilibrium. The classical laser gain picture fails, however, when a high peak intensity optical pulse of duration shorter than the intrinsic carrier scattering time interacts with electrons in the conduction and holes in the valence band, and the non-equilibrium carrier distributions cannot recover during the presence of the exciting pulse. We present the optimization of ultrashort mode-locked pulses in a vertical external cavity surface emitting laser cavity with a sat
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15

José, Eduardo Barqueros Muñoz. "Measurement of ultrashort laser pulses using the Second-Harmonic Generation Frequency-Resolved Optical-Gating : Characterization of an ultrashort laser pulse." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19369.

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Communication technologies are continuosly evolving since were invented the telegraph. Nowadays, one of the most interesting and relatively youngest field of telecommunications are the optical communications. The search of the shortest event ever created to measure very fast/short events is now possible because of the Light Amplification by Stimulated Emission of Radiation, longer known as laser.So well, we need to find the shortest event but we need to know how to measure it, since it is supposed that there is not a shorter event. So we need the pulse to measure itself, and its sound as we ne
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16

Lotti, Antonio. "Pulse shaping and ultrashort laser pulse filamentation for applications in extreme nonlinear optics." Palaiseau, Ecole polytechnique, 2012. http://pastel.archives-ouvertes.fr/docs/00/66/56/70/PDF/tesi.pdf.

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Cette thèse traite de l'étude numérique des propriétés et des applications des impulsions spatio-temporellement couplées, paquets d'ondes coniques et filaments laser, dans les processus fortement non-linéaires, comme la génération d'harmoniques d'ordre élevé. Nous étudions la redistribution de l'énergie au sein de ces paquets d'ondes en propagation linéaire et non-linéaire. Le flux d'énergie constitue un diagnostic des couplages spatio-temporels que nous avons appliqué à des résultats expérimentaux réels. Nous analysons l'évolution spectrale des filaments dans un gaz et nous obtenons les condi
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17

Cohen, Jacob Arthur. "Measuring the electric field of picosecond to nanosecond pulses with high spectral resolution and high temporal resolution." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37179.

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We demonstrate four experimentally simple methods for measuring very complex ultrashort light pulses. Although each method is comprised of only a few optical elements, they permit the measurement of extremely complex pulses with time-bandwidth products greater than 65,000. First, we demonstrate an extremely simple frequency-resolved-optical gating (GRENOUILLE) device for measuring the intensity and phase of pulses up to ~20ps in length. In order to achieve the required high spectral resolution and large temporal range, it uses a few-cm-thick second harmonic-generation crystal in the shape of a
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18

Larson, Adam Michael. "Optical fiber based ultrashort pulse multispectral nonlinear optical microscopy." Thesis, [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2323.

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19

Pérez, Vizcaíno Jorge. "Programmable optics for ultrashort pulse management: devices and applications." Doctoral thesis, Universitat Jaume I, 2015. http://hdl.handle.net/10803/668947.

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The contribution of the present report to the field of ultrashort optics has several aspects: from the development of new optical devices for ultrashort pulse management, to the application of those devices for triggering laser-matter interaction processes. In this sense, the key point of this Thesis is the use of reconfigurable phase-only SLMs based on LCOS technology for spatial and temporal shaping of femtosecond pulses. The management of femtosecond pulses demands specific strategies to obtain the desired output response while preventing undesirable distortions. Our results show that progr
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20

Cataluna, Maria Ana. "Ultrashort-pulse generation from quantum-dot semiconductor diode lasers /." St Andrews, 2007. http://hdl.handle.net/10023/414.

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21

Cataluna, Maria Ana. "Ultrashort-pulse generation from quantum-dot semiconductor diode lasers." Thesis, University of St Andrews, 2008. http://hdl.handle.net/10023/414.

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In this thesis, novel regimes of mode locking in quantum dot semiconductor laser diodes have been investigated by exploiting the unique features offered by quantum dots. Using an unconventional approach, the role of excited state transitions in the quantum dots was exploited as an additional degree of freedom for the mode locking of experimental quantum dot lasers. For the first time, passive mode locking via ground (1260nm) or excited state (1190nm) was demonstrated in a quantum dot laser. Picosecond pulses were generated at a repetition rate of 21GHz and 20.5GHz, for the ground and excited s
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22

Siiman, Leo. "ULTRASHORT LASER PULSE INTERACTION WITH PHOTO-THERMO-REFRACTIVE GLASS." Doctoral diss., University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3946.

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Photo-thermo-refractive (PTR) glass is an ideal photosensitive material for recording phase volume holograms. It is a homogeneous multi-component silicate glass that demonstrates all the advantages of optical glass: thermal stability, high laser damage threshold, and a wide transparency range. Moreover the ability to record phase patterns (i.e. spatial refractive index variations) into PTR glass has resulted in the fabrication of volume holograms with diffraction efficiency greater than 99%. The conventional method of recording a hologram in PTR glass relies on exposure to continuous-wave ultr
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23

Pang, Wing Chung. "Ultrashort pulse generation with a distributed feedback dye laser." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47607.

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24

Shen, Hanfei M. 1979. "Ultrashort pulse generation with solid state Cr⁴⁺:YAG laser." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/87850.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, February 2003.<br>Includes bibliographical references (p. 127-130).<br>by Hanfei M. Shen.<br>S.M.
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25

Almanee, Mohammad S. "Intense, Ultrashort Pulse, Vector Wave Propagation in Optical Fibers." University of Dayton / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1488802537164032.

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26

Faccio, Daniele. "Nonlinear conical waves in ultrashort pulse filamentation and applications." Nice, 2007. http://www.theses.fr/2007NICE4089.

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Ce travail de thèse a pour sujet le développement du modèle appelé modèle d’inde X (X-wave model) pour la filamentation d’impulsions laser ultra-courtes. La filamentation a été découverte pour la première fois au début des années 1960 et a beaucoup attiré l’attention depuis, en raison des nombreux phénomènes physiques non-linéaires impliqués et des applications possibles des filaments. Le modèle d’onde X propose une vision de la filamentation qui, en fait, n’est pas complètement nouvelle, dans le sens que c’est une évolution de l’idée originale de propagation stationnaire et de type solitoniqu
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27

Li, Kebin. "Micromirror array phase modulator for ultrashort optical pulse shaping /." Connect to Digital dissertations. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.

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28

Rae, Stuart Campbell. "Short-pulse laser-plasma interactions." Thesis, University of Oxford, 1991. http://ora.ox.ac.uk/objects/uuid:c429d2ee-64d4-415a-b799-f5436d19ccc9.

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This thesis deals with several theoretical aspects of the interaction of an intense femtosecond laser pulse with a plasma. A mechanism for the enhancement of the collisional absorption of light at high intensities is described, involving the direct excitation of collective modes of the plasma, and the importance of this mechanism for a solid-density laser-produced plasma is studied under a range of conditions. An intensity-dependent collision rate is used in a numerical calculation of the reflectivity of a steep-gradient plasma, such as might be produced by an intense femtosecond laser pulse,
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29

Chen, Lawrence R. "Ultrashort optical pulse interaction with fibre gratings and device applications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq29402.pdf.

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30

Haxsen, Frithjof [Verfasser]. "Ultrashort pulse thulium-doped fiber lasers and amplifiers / Frithjof Haxsen." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2013. http://d-nb.info/1035469146/34.

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31

Bürger, Steven. "About an autoconvolution problem arising in ultrashort laser pulse characterization." Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-154367.

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We are investigating a kernel-based autoconvolution problem, which has its origin in the physics of ultra short laser pulses. The task in this problem is to reconstruct a complex-valued function $x$ on a finite interval from measurements of its absolute value and a kernel-based autoconvolution of the form [[F(x)](s)=int k(s,t)x(s-t)x(t)de t.] This problem has not been studied in the literature. One reason might be that one has more information than in the classical autoconvolution case, where only the right hand side is available. Nevertheless we show that ill posedness phenomena may occur. We
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32

Major, Arkady. "Diode-pumped passively mode-locked ultrashort pulse solid-state lasers." Thesis, University of Strathclyde, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273384.

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33

Vysniauskas, Kestutis. "Compact ultrashort pulse diode pumped vertical cavity surface emitting laser." Thesis, University of Southampton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274531.

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34

Ouyang, J. "Tailored optical vector fields for ultrashort-pulse laser micro-processing." Thesis, University of Liverpool, 2016. http://livrepository.liverpool.ac.uk/3001726/.

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In this thesis, a Spatial Light Modulator (SLM) and a nano-structured S-waveplate were integrated with a picosecond laser system and employed to generate complex vector optical fields. Precise tailoring of optical vector beams is demonstrated, shaping their focal electric fields. Using novel optical setups, radial and azimuthal polarizations with and without vortex phase wavefront were created, producing complex laser micro patterning on a polished metal surface. Imprinting Laser Induced Periodic Surface Structures(LIPSS) elucidates the detailed vector fields around the focal region, which sho
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35

Evans, Jonathan Michael. "Ultrashort pulse generation and synchronisation in self-modelocked vibronic lasers." Thesis, University of St Andrews, 1994. http://hdl.handle.net/10023/13809.

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This thesis is concerned with the generation of ultrashort pulses from vibronic lasers. The two laser active materials used in the course of the work were Ti:sapphire and Cr:LiSAF. A self-modelocked Ti:sapphire laser has been described which generated pulses as short as 2ps, tunable over the wavelength range 730 - 850nm. The average output power was 400mW corresponding to a peak pulse power of 1kW. Using a prism sequence to implement intracavity dispersion-compensation resulted in the generation of near-transform limited pulses as short as 53fs with a peak pulse power of ~100kW. Two initiation
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36

Jiang, Shuanghua. "Dynamics of Ultrashort Pulse Generation and Amplification in Dye Lasers." PDXScholar, 1993. https://pdxscholar.library.pdx.edu/open_access_etds/1310.

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The dynamics of ultrashort pulse generation and amplification in dye lasers is studied in this dissertation. In particular, we have developed general semiclassical models for ultrashort pulse dye laser amplifiers and oscillators. These models start from Maxwell’s equation for the electric field and density matrix equations for the active laser medium. A finite coherence time or phase memory time of the molecular wave functions, a finite vibrational relaxation time for the lower electronic state of the dye laser transition, an isotropic molecular orientational distribution, and an arbitrary p
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37

Macpherson, James. "Characterisation and Optimization of Ultrashort Laser Pulses." Thesis, University of Waterloo, 2003. http://hdl.handle.net/10012/1237.

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The ultrafast optical regime is defined, as it applies to laser pulses, along with a brief introduction to pulse generation and characterisation technologies. A more extensive description of our particular amplified pulse generation and SPIDER characterisation systems follows. Data verifying the correct operation of the characterisation system is presented and interpreted. Our laser system is then characterised in two different configurations. In each case, the data describing the system is presented and analyzed. Conclusions are made regarding the performance of both the charac
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38

Nishizawa, Norihiko, and Toshio Goto. "Widely wavelength-tunable ultrashort pulse generation using polarization maintaining optical fibers." IEEE, 2001. http://hdl.handle.net/2237/6864.

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39

Rudhall, Andrew Peter. "Ultrashort laser pulse shaping for novel light fields and experimental biophysics." Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/3682.

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Broadband spectral content is required to support ultrashort pulses. However this broadband content is subject to dispersion and hence the pulse duration of corresponding ultrashort pulses may be stretched accordingly. I used a commercially-available adaptive ultrashort pulse shaper featuring multiphoton intrapulse interference phase scan technology to characterise and compensate for the dispersion of the optical system in situ and conducted experimental and theoretical studies in various inter-linked topics relating to the light-matter interaction. Firstly, I examined the role of broadband ul
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40

MacFarlane, Duncan Leo. "Ultrashort Pulse Production in Synchronously Pumped Mode-Locked Dye Laser Systems." PDXScholar, 1989. http://pdxscholar.library.pdx.edu/open_access_etds/1392.

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The concern of this dissertation is the understanding and improvement of a class of lasers that is responsible for some of the shortest optical pulses available today. In particular, we seek ways to produce from synchronously pumped mode-locked dye laser systems, shorter pulses of higher intensity with improved pulse-to-pulse consistency. Specific topics.that are discussed herein include the study of the role of the pump pulse in synchronously pumped mode-locked lasers, the study of the pulse shaping and shortening due to an intracavity saturable absorber, and the study of a fundamental pulse
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41

RUSSELL, ALEX. "Modeling Ultrashort Pulse Laser Damage with the Particle in Cell Method." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1552154386797503.

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42

Xia, Mo. "Ultra-short optical pulse generation from semiconductor diode emitters." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609419.

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43

Aktürk, Selçuk. "Extending ultrashort-laser-pulse measurement techniques to new dimensions, time scales, and frequencies." Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-04072005-222544/unrestricted/akturk%5Fselcuk%5F200505%5Fphd.pdf.

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Thesis (Ph. D.)--Physics, Georgia Institute of Technology, 2005.<br>Rick Trebino, Committee Member ; Philip First, Committee Member ; Chandra Raman, Committee Member ; Ali Adibi, Committee Member ; John Buck, Committee Member. Vita. Includes bibliographical referenced.
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44

Nishizawa, Norihiko, and Toshio Goto. "Generation and application of wavelength tunable ultrashort soliton pulse in optical fiber." IEEE, 2004. http://hdl.handle.net/2237/7173.

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45

Chen, Junewen. "Development and applications of a high intensity ultrashort pulse UV laser system." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/46710.

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46

Thoen, Erik R. (Erik Robert). "Development of ultrashort pulse fiber lasers for optical communication utilizing semiconductor devices." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/16747.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.<br>Includes bibliographical references (p. 131-139).<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>The nonlinear reflectivity of semiconductor saturable absorber mirrors is investigated with ultrafast time-resolved and time-averaged reflectivity measurements. The relative contributions of absorption bleaching and induced absorption are studied as a function of fluence and wav
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47

Hung, Hazel S. S. "An adaptive mid-infrared ultrashort pulse source for applications in coherent control." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/340806/.

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An adaptive mid-infrared (MIR) ultrashort pulse source is investigated for application to the coherent control of molecules. The MIR regime will allow access to vibrational modes of common organic bonds, and ultrashort pulse durations should enable the required interaction to occur before the energy is redistributed throughout the molecule. By using the molecular system as part of an adaptive learning loop, one can deliver the desired MIR pulse without the need for prior lengthy calculations to solve the Hamiltonian. The adaptive MIR pulse shaper is presented as a feasibility study in this the
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48

Escoto, Esmerando [Verfasser], Günter [Gutachter] Steinmeyer, Thomas [Gutachter] Feurer, and Tim [Gutachter] Schröder. "Measurement of Pulse Train Instability in Ultrashort Pulse Characterization / Esmerando Escoto ; Gutachter: Günter Steinmeyer, Thomas Feurer, Tim Schröder." Berlin : Humboldt-Universität zu Berlin, 2020. http://d-nb.info/1206588020/34.

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49

Akturk, Selcuk. "Extending ultrashort-laser-pulse measurement techniques to new dimensions, time scales, and frequencies." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6892.

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In the last decade, there has been tremendous progress in the field of ultrashort-pulse measurement. However, this effort has focused mostly on the temporal behavior of 100-fs, 800-nm ultrashort pulse, ignoring other pulse lengths, wavelengths, and the very common space-time couplings or so called spatio-temporal distortions. In this thesis work, I do an extensive study of spatio-temporal distortions and their measurement using Frequency Resolved Optical Gating (FROG) and its relatives. I clarify some ambiguities in the descriptions of these effects in the existing theory and establish a more
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50

Gabolde, Pablo. "Measurements of the spatio-temporal profiles of femtosecond laser pulses." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-06272007-101312/.

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Thesis (Ph. D.)--Physics, Georgia Institute of Technology, 2008.<br>Trebino, Rick, Committee Chair ; Kennedy, Brian, Committee Member ; Kuzmich, Alex, Committee Member ; Curtis, Jennifer, Committee Member ; Buck, John, Committee Member.
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