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Rozprawy doktorskie na temat „Nonlinear optics”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

De, Matos Christiano Jose Santiago. "Nonlinear optics in specialty optical fibres." Thesis, Imperial College London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419770.

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2

Gao, Xuesong. "Quantum Nonlinear Optics." University of Dayton / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1564662783494271.

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3

Goldstein, Elena Vladimirovna 1962. "Nonlinear atom optics." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/289255.

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In contrast to electromagnetic fields, matter-wave fields are intrinsically interacting due to the presence of atom-atom collisions. Hence, matter-wave optics becomes effectively nonlinear as soon as the atomic densities are high enough that collisions can no longer be ignored. The goal of this dissertation is to study selected aspects of atom optics under such conditions. Specifically, Chapter 2 studies the near-resonant dipole-dipole interaction between two atoms in tailored vacua. In contrast to spontaneous emission, whose rate is known to be influenced by the type of vacuum the atom intera

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4

Jonsson, Fredrik. "The nonlinear optics of magneto-optic media." Doctoral thesis, KTH, Physics, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2967.

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5

FORTENBERRY, RANCE MORGAN. "NONLINEAR OPTICAL PHENOMENA IN ZINC OXIDE WAVEGUIDES (INTEGRATED OPTICS, NONLINEAR COUPLING)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183951.

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This dissertation reports on the development of a nonlinear surface spectroscopy and the observation of nonlinear optical phenomena using sputtered zinc oxide waveguides. The first is known as Surface Coherent Raman Spectroscopy, or SCRS, and is capable of monolayer sensitivity. The second, discovered during the development of SCRS, is optical limiting and a previously unobserved form of optical switching based on an absorptive nonlinear coupling mechanism. Overviews of the theories of waveguiding, linear coupling, and SCRS are given. Experiments showing that the spectrum of a monolayer covera

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6

Meier, Joachim. "DISCRETE NONLINEAR WAVE PROPAGATION IN KERR NONLINEAR MEDIA." Doctoral diss., University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2900.

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Discrete optical systems are a subgroup of periodic structures in which the evolution of a continuous electromagnetic field can be described by a discrete model. In this model, the total field is the sum of localized, discrete modes. Weakly coupled arrays of single mode channel waveguides have been known to fall into this class of systems since the late 1960's. Nonlinear discrete optics has received a considerable amount of interest in the last few years, triggered by the experimental realization of discrete solitons in a Kerr nonlinear AlGaAs waveguide array by H. Eisenberg and coworkers in 1

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7

Yuan, Shuai. "Filamentation induced nonlinear optics." Doctoral thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25268.

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La filamentation du laser femtoseconde provient d'un équilibre dynamique entre l’autofocalisation Kerr et la défocalisation par le plasma autogénéré produit de l’ionisation multiphotonique/tunnel des molécules dans l'air. Ce phénomène a attiré beaucoup d’attention des scientifiques telles que la télédétection de polluants atmosphériques et l'identification moléculaire par l'alignement des molécules. Cependant, il y a une multitude de processus non linéaires lors de la filamentation. Quant à l'application, il est important d'avoir une compréhension des mécanismes physiques présents lors de la f

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8

Hu, Quanyuan. "Synthesis, characterization and NLO properties of octupolar molecules /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202005%20HU.

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9

Fu, Ling. "Fibre-optic nonlinear optical microscopy and endoscopy." Australasian Digital Thesis Program, 2007. http://adt.lib.swin.edu.au/public/adt-VSWT20070521.155004/index.html.

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Thesis (PhD) - Swinburne University of Technology, Faculty of Engineering and Industrial Sciences, Centre for Micro-Photonics, 2007.<br>A thesis submitted for the degree of Doctor of Philosophy, Centre for Micro-Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, 2007. Typescript. Bibliography: p. 146-162.

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10

Tsangaris, Charalambos. "Transverse effects in optical cavities and nonlinear optics." Thesis, Imperial College London, 2005. http://hdl.handle.net/10044/1/8799.

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11

Norris, Greg. "Experimental nonlinear optics for applications in optical microscopy." Thesis, University of Strathclyde, 2011. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=16932.

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The motivation of this thesis was to develop efficient and improved optical excitation sources for applications in confocal laser scanning microscopy (CLSM) and multiphoton laser scanning microscopy (MPLSM), with emphasis on extending the wavelength coverage of existing laser sources using nonlinear optical methods. This included quantitative and qualitative structural analysis of periodically poled nonlinear materials using MPLSM. These materials, used in nonlinear optical frequency conversion, rely upon consistent poling lengths for quasi-phase matched operation. The described technique prov

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12

Herrera, Oscar Dario. "Nonlinear Photonics in Waveguides for Telecommunications." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/338755.

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Bandwidth demands in global telecommunication infrastructures continue to rise and new optical techniques are needed to deal with massive data flows. Generating high bandwidth signals (> 40 GHz) using conventional modulation techniques is hindered by material limitations and fabrication complexities. Similarly, controlling such high bandwidths in both the temporal and spectral domain becomes more problematic using conventional electronic processes. Advances in electro-optic organic materials, fibers/micro-fluidics integration, and nonlinear optics have significant potential for higher bandwid

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13

Novikova, Irina Borisovna. "Nonlinear magneto-optic effects in optically dense Rb vapor." Texas A&M University, 2004. http://hdl.handle.net/1969.1/364.

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Nonlinear magneto-optical effects, originated from atomic coherence, are studied both theoretically and experimentally in thermal Rb vapor. The analytical description of the fundamental properties of coherent media are based on the simplified three- and four-level systems, and then verified using numerical simulations and experimental measurements. In particular, we analyze the modification of the long-lived atomic coherence due to various physical effects, such as reabsorption of spontaneous radiation, collisions with a buffer gas atoms, etc. We also discuss the importance of the high-order n

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14

Liu, Xunmimg. "Nonlinear dynamics in quantum optics /." St. Lucia, Qld, 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17835.pdf.

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15

Li, Ruo-Ding. "Model analysis in nonlinear optics." Doctoral thesis, Universite Libre de Bruxelles, 1991. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/213005.

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16

Turner, Peter D. "Organic materials for nonlinear optics /." Title page, contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09pht951.pdf.

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17

Anscombe, Marcel Philip. "Nonlinear optics with atomic coherence." Thesis, Imperial College London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404378.

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18

Griffiths, J. "Crystal engineering for nonlinear optics." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599722.

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Chapter Two details the design, synthesis and characterisation of some compounds of general formula <i>p</i>-DC<sub>6</sub>F<sub>4</sub>A-<i>p</i>’. Donor and acceptor groups are discussed both in the context of maximising the molecular NLO response, and in the context of the promotion of polar chain formation through supramolecular synthons. Of the ten compounds presented in this chapter, nine are noncentrosymmetric. Preliminary NLO measurements show that these nine compounds exhibit an appreciable SHG response. Semi-empirical calculations were performed on these and related systems to determ

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19

McIntyre, Ross. "Pattern formation in nonlinear optics." Thesis, Heriot-Watt University, 1996. http://hdl.handle.net/10399/716.

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20

Walmsley, M. "Ultrafast nonlinear optics in semiconductors." Thesis, Durham University, 1993. http://etheses.dur.ac.uk/5498/.

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The nonlinear optical phenomena which occur in semiconductor materials on a femtosecond to picosecond timescale have recently generated much interest, especially in the field of telecommunications where the development of all-optical switching devices based on semiconductors promises a considerable reduction in the complexity of design coupled with a large increase in the speed of operation. This thesis examines the underlying ultrafast physical processes with the aim of providing a clear understanding of the mechanisms involved. The two main regimes of operation are investigated, namely off-r

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21

Hameed-Muhammed, Muhammed Subhi. "Novel composites for nonlinear optics." Thesis, Queen's University Belfast, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301715.

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22

Geddes, John Bruce. "Patterns, fishing and nonlinear optics." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186972.

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Motivated by a conversation with my brother, a deep sea fisherman off the east coast of Scotland, I review the concepts which unify the topic of pattern formation in nonequilibrium systems. As a specific example of a pattern-forming system, I go on to examine pattern formation in nonlinear optics and I discuss two nonlinear optical systems in considerable detail. The first, counterpropagating laser beams in a nonlinear Kerr medium, results in the prediction and numerical observation of hexagonal patterns in a self-focusing medium, and of square patterns in a self-defocusing medium. Furthermore

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23

Agnew, Amalia. "Quantum-Chemical Investigations of Second- and Third-Order Nonlinear Optical Chromophores for Electro-Optic and All-Optical Switching Applications." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/11575.

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The past decades have witnessed the development of new materials with large nonlinear optical properties, which have made them attractive candidats for a broad spectrum of breakthrough applications in the electro-optic and photonic fields (e.g., telecommunication and computing). A deeper understanding of the relationship between, on the one hand, the chemical structure and, on the other hand, the electronic and (linear and nonlinear) optical properties has proven useful for the rational design of new efficient materials. Reaching such an understanding has attracted major interest in the scient

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24

MOSHREFZADEH, ROBERT SHAHRAM. "THEORY AND FABRICATION OF SUB-MICRON GRATINGS ON NONLINEAR OPTICAL WAVEGUIDES." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184138.

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Because of their compatibility with the planar concept of integrated optics, grating couplers offer the most satisfactory means of coupling light into thin film optical waveguides. The purpose of this dissertation has been to study the behaviour, both theoretically and experimentally, and fabrication of grating couplers in nonlinear waveguides. A theory of nonlinear grating couplers is presented based on a coupled-mode approach. The dependence of coupling efficiency on incident beam intensity, beam size, beam position, incident angle, chirp rate, and waveguide losses have been examined all in

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25

Svensson, Barbro Christina. "Nonlinear distributed couplers in zinc-sulfide waveguides." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184500.

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Nonlinear phenomena originating from the distributed coupling process were observed when distributed couplers, such as prisms and gratings, were used to couple light into nonlinear ZnS thin film waveguides. The efficiency of the nonlinear distributed coupling process was found to depend on two independent parameters, the angle of the incident beam and the power of the incident beam. Depending on the detuning of the incident angle, from the optimum incident angle at low powers, either optical limiting, power-dependent switching, or power-dependent bistability of the coupling efficiency, and the

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26

Johnston, Wesley James. "Nonlinear optics in Bragg-spaced quantum wells." Diss., University of Iowa, 2010. https://ir.uiowa.edu/etd/826.

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Bragg spaced quantum wells represent a unique class of resonant photonic materials, wherein a photonic bandgap is created by the periodic spacing of quantum wells and the associated variation in the complex susceptibility (index and absorption) of the material. Interest in BSQWs has grown in the past decade due to their large ultrafast nonlinearities and the corresponding large ultrafast reflectivity changes and transmissivity. These nonlinearities are of particular interest in areas of communication technology, where ultrafast all-optical logic components have become increasingly in demand. T

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27

Rochford, Kent Blair. "Linear and nonlinear optical properties of polydiacetylene waveguides." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185340.

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The linear and nonlinear optical properties of a spin-coated polydiacetylene, [5,7-dodecadiyn-1,12-diol-bis(n-butoxy-carbonyl-methyl-urethane)], or poly(4BCMU), were measured to predict its performance in all-optical devices at 1.319 μm. Material requirements for all-optical devices were identified and figures-of-merit noted. A two-photon absorption figure of merit was verified by numerical simulation of a waveguide device. The refractive index and waveguide loss in spin-coated poly(4BCMU) films were measured. A photo-induced bleaching was observed, and its effect on linear and nonlinear optic

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28

Keilbach, Kevin Anthony 1963. "Nonlinear prism coupling in an organic waveguide." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276875.

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Computer modeling of prism coupling of pulsed laser irradiation at a wavelength of 1064 nm into an organic polymer waveguide with Kerr Law nonlinearities showed that the prism coupling technique was inherent problems that make it difficult to accurately determine the magnitude of the refractive index change. Uncertainty in knowledge of the gap spacing under the prism leads to errors in any estimates of these nonlinear refractive index changes. Results from prism coupling experiments conducted on a polymer waveguide with a pulsed laser are inconclusive.

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29

Evans, Christopher Courtney. "Nonlinear optics in titanium dioxide: from bulk to integrated optical devices." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:11167.

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In this thesis, we explore titanium dioxide (TiO2) for ultrafast, on-chip nonlinear optics by studying it in bulk, thin films, and in integrated nonlinear optical devices. TiO2's large nonlinear index of refraction (30 times that of silica) and low two-photon absorption can enable all-optical switching, logic, and wavelength conversion across wavelengths spanning the telecommunications octave (800–1600 nm). In addition, its high linear index of refraction can enhance optical confinement down to nano-scale dimensions and facilitate the tight waveguide bends necessary for dense on-chip int

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30

Manzoni, Marco Tommaso. "New systems for quantum nonlinear optics." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/461495.

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Photons travelling through free space do not interact with each other. This characteristic makes them perfect candidates to carry quantum information over long distances. On the other hand, processing the information they encode requires interaction mechanisms. In recent years, there have been growing efforts to realize strong, controlled interactions between photons by making them interact with individual atoms, which are intrinsically nonlinear objects. This, and the efforts to understand the phenomena that can emerge, have spawned the new field of`"quantum nonlinear optics." A number of a

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31

Hulshof, Johannes Bernardus Everardus. "Materials for second order nonlinear optics." [S.l. : [Groningen : s.n.] ; University of Groningen] [Host], 1995. http://irs.ub.rug.nl/ppn/.

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32

Blake, Iain M. "Conjugated porphyrin systems for nonlinear optics." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365889.

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Naguleswaran, Siva. "Time reversal symmetry in nonlinear optics." Thesis, University of Canterbury. Physics, 1998. http://hdl.handle.net/10092/8166.

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Results following from time reversal symmetry are developed for those nonlinear optical processes where a statistical average is required. This extends results found in Rayleigh (and Raman) scattering to nonlinear optical processes of arbitrary order, and generalises those few analyses specific to nonlinear optics. For example, Onsager relations for self-conjugate nonlinear optical processes (when input and output photons form degenerate pairs) are derived, and associated reversality relations generalised. In the nonresonant limit magnetic dipole but not electric quadrupole terms in coherent p

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34

Stensson, Katarina. "Quantum Optics in 2D Nonlinear Lattices." Thesis, KTH, Tillämpad fysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-145893.

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35

Harvey, Thomas Grierson. "Nonlinear optics of the polydiacetylene pTS." Thesis, Heriot-Watt University, 1991. http://hdl.handle.net/10399/874.

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36

Ryder, Elaine. "Nonlinear guided waves in fibre optics." Thesis, University of Edinburgh, 1993. http://hdl.handle.net/1842/14342.

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Optical fibres are widely used in optical communication systems because they can transmit signals in the form of extremely short pulses of quasi-monochromatic light over large distances with high intensities and negligible attenuation. A fibre that is monomode and axisymmetric can support both left- and right-handed circularly polarised modes having the same dispersion relation. The evolution equations are coupled nonlinear Schröinger equations, the cubic terms being introduced by the nonlinear response of the dielectric material at the high optical intensities required. In this thesis we anal

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37

Dhayal, Suman. "Nonlinear and Quantum Optics Near Nanoparticles." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc822820/.

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We study the behavior of electric fields in and around dielectric and metal nanoparticles, and prepare the ground for their applications to a variety of systems viz. photovoltaics, imaging and detection techniques, and molecular spectroscopy. We exploit the property of nanoparticles being able to focus the radiation field into small regions and study some of the interesting nonlinear, and quantum coherence and interference phenomena near them. The traditional approach to study the nonlinear light-matter interactions involves the use of the slowly varying amplitude approximation (SVAA) as it si

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38

Compton, Ryan Edward. "Nonlinear Optics in Non-Equilibrium Microplasmas." Diss., Temple University Libraries, 2011. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/123146.

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Chemistry<br>Ph.D.<br>This dissertation details the nature of subnanosecond laser-induced microplasma dynamics, particularly concerning the evolution of the electron temperature and concentration. Central to this development is the advent of a femtosecond four-wave mixing (FWM) spectroscopic method. FWM (in the form of coherent anti-Stokes Raman scattering (CARS)) measurements are performed on the fundamental oxygen vibrational transition. An analytical expression is provided that accounts for the resonant and nonresonant contributions to the CARS signal generated from the interaction of broad

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39

Redondo, Loures Cristian. "Negative frequency effects in nonlinear optics." Thesis, Heriot-Watt University, 2016. http://hdl.handle.net/10399/3288.

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In this thesis we analyse the impact of the new terms that appear in the nonlinear polarisation of the equations relevant to nonlinear x(3) optical materials when the slowly varying envelope approximation (SVEA) is not applied. These new terms introduce new nonlinear interactions between the positive and negative frequency parts of the spectrum of an optical pulse, giving rise to novel nonlinear phenomena that were not present in the usual models based in SVEA, like the ubiquitous nonlinear Schrodinger equation (NLSE). The analysis carried out in this thesis is theoretical, with both numerical

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40

CLEMENTI, MARCO. "Nonlinear Optics in Photonic Crystal Cavities." Doctoral thesis, Università degli studi di Pavia, 2020. http://hdl.handle.net/11571/1317094.

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Harnessing the properties of light for technological applications is perhaps the ultimate objective of photonics, whereas the generation, manipulation and detection of light in chip-based structures has an important impact both on industry and on fundamental research1. The integration to semiconductor-based nanostructures makes possible the application of the photonics paradigm to compact devices which on one hand enable the processing of information at high speed, and on the other hand allow to include, onto a single chip, complex experimental apparatuses, opening the way towards novel techno

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41

Turner-Valle, Jennifer 1970. "Nonlinear multilayers as optical limiters." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/288788.

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In this work we present a non-iterative technique for computing the steady-state optical properties of nonlinear multilayers and we examine nonlinear multilayer designs for optical limiters. Optical limiters are filters with intensity-dependent transmission designed to curtail the transmission of incident light above a threshold irradiance value in order to protect optical sensors from damage due to intense light. Thin film multilayers composed of nonlinear materials exhibiting an intensity-dependent refractive index are used as the basis for optical limiter designs in order to enhance the non

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42

Nee, Phillip Tsefung. "Optical frequency division via periodically-poled-LiNbO₃-based nonlinear optics." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80486.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.<br>Includes bibliographical references (leaves 186-194).<br>by Philip Tsefung Nee.<br>Ph.D.

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Cui, A. G. (Aiguo G. ). "Nonlinear Optical Properties of GaAs at 1.06 micron, picosecond Pulse Investigation and Applications." Thesis, University of North Texas, 1992. https://digital.library.unt.edu/ark:/67531/metadc332605/.

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The author explores absorptive and refractive optical nonlinearities at 1.06 [mu]m in bulk, semi-insulating, undoped GaAs with a particular emphasis on the influence of the native deep-level defect known as EL2. Picosecond pump-probe experimental technique is used to study the speed, magnitude, and origin of the absorptive and refractive optical nonlinearities and to characterize the dynamics of the optical excitation of EL2 in three distinctly different undoped, semi-insulating GaAs samples. Intense optical excitation of these materials leads to the redistribution of charge among the EL2 stat

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44

Alam, Mohammad Zahirul. "Experiments in Nonlinear Optics with Epsilon-Near-Zero Materials." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/41088.

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Nonlinear optics is the study of interactions of materials with intense light beams made possible by the invention of laser. Arguably the most trivial but technologically most important nonlinear optical effect is the intensity-dependent nonlinear refraction: an intense light beam can temporarily and reversibly change the refractive index of a material. However, the changes to the refractive index of a material due to the presence of a strong laser beam are very weak---maximum on the order of $10^{-3}$---and tend to be a small fraction of the linear refractive index. It must be noted that at o

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45

Hessenius, Chris. "Novel Cavities and Functionality in High-Power High-Brightness Semiconductor Vertical External Cavity Surface Emitting Lasers." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/301667.

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Ever since the first laser demonstration in 1960, applications for laser systems have increased to include diverse fields such as: national defense, biology and medicine, entertainment, imaging, and communications. In order to serve the growing demand, a wide range of laser types including solid-state, semiconductor, gas, and dye lasers have been developed. For most applications it is critical to have lasers with both high optical power and excellent beam quality. This has traditionally been difficult to simultaneously achieve in semiconductor lasers. In the mid 1990's, the advent of an optica

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46

Sabra, Ahmad. "Nonlinear PDE and Optical Surfaces Design." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/345398.

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Mathematics<br>Ph.D.<br>We introduce two models to design near field reflectors in R^3 that solve an inverse problem in radiometry, taking into account the inverse square law of irradiance. The problem leads to a Monge-Ampere type inequality. The surfaces in the first model are strictly convex and require to be far from the source to avoid obstruction. In the second model, the reflectors are neither convex nor concave and do not block the rays even if they are close to the source.<br>Temple University--Theses

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47

Hart, Darlene Louise. "Nonlinear dynamics of multiwave mixing in an optical fiber." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/30047.

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48

Rodgers, John Scott. "Multimode interference in a Kerr nonlinear material." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/13365.

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49

Chen, Xin. "Managing light in engineered nonlinear optical structures." Phd thesis, Canberra, ACT : The Australian National University, 2017. http://hdl.handle.net/1885/142957.

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Optical frequency conversion process allows one to generate coherent light in wavelength ranges that are not readily available. It is well known that because of dispersion, the phase mismatch between interacting waves leads to low efficiency of frequency generation. Quasi-phase matching (QPM) that uses crystals with a spatial modulation of the second-order nonlinear coefficient χ(2), also known as nonlinear photonic crystals (NPC), is an important technique to solve the phase mismatch problem. With proper design of the quadratic nonlinearity modulat

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Feaver, Ryan K. "Longwave-Infrared Optical Parametric Oscillator in Orientation-Patterned Gallium Arsenide." University of Dayton / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1324048074.

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