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Dissertations / Theses on the topic 'Diffraction gratings'

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Published: 4 June 2021

Last updated: 25 July 2025

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1

Walsh, Sheridan John T. P. "Diffraction by volume gratings." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303660.

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2

Watson, Andre James. "Diffraction gratings in ray tracing." Diss., [La Jolla] : University of California, San Diego, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p1464665.

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Thesis (M.S.)--University of California, San Diego, 2009.<br>Title from first page of PDF file (viewed July 7, 2009). Available via ProQuest Digital Dissertations. Includes bibliographical references (p. 66-67).

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3

DeSandre, Lewis Francis. "Extinction theorem analysis of diffraction anomalies in overcoated-gratings." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184853.

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A rigorous analysis based upon the extinction theorem is presented to study anomalous resonance effects from single- and multilayer-overcoated, low-efficiency diffraction gratings. Anomalously high diffraction efficiency at resonance results from the coupling of the incident beam into guided waves that can be propagated within the composite structure. Both the traditional characteristic matrix technique and a recursive or R-matrix propagation technique are presented. The R-matrix propagation algorithm was found to be stable numerically, and computational results agree favorably with both exper

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4

Li, Lifeng. "Application of diffraction grating theory to analysis and fabrication of waveguide gratings." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184388.

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This dissertation includes three separate studies of related waveguide grating phenomena. These studies deal with a numerical improvement of the integral method of diffraction grating theory, the theoretical analysis of waveguide gratings, and fabrication techniques for photoresist grating masks. The first topic addresses the acceleration of the convergence of the integral kernels. To improve the performance of the integral method for calculating diffraction grating efficiencies, the convergence of the integral kernels is studied. A nonlinear sequence transformation, Levin's u-transformation,

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5

Watts, Richard Adrian. "The optical response of metallic diffraction gratings." Thesis, University of Exeter, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361343.

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6

Chang, Chih-Hao 1980. "Fabrication of extremely smooth blazed diffraction gratings." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/27056.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2004.<br>Includes bibliographical references (p. 103-106).<br>High efficiency diffraction gratings are important in a variety of applications, such as optical telecommunications, lithography, and spectroscopy. Special interest has been placed on blazed diffraction gratings for their ability to enhance diffraction intensity at the specular reflection angle off the blazed facets. In this thesis I will report a novel process for fabricating extremely smooth blazed diffraction gratings with 200 nm-period. The bl

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7

Cai, Li-He. "Experimental investigation of some conducting crossed gratings." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25056.

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The properties of a crossed grating of square pyramids and a crossed grating with hemispherical cavities to eliminate specular reflection from a conducting surface are studied experimentally. Measurements were made in the microwave range of 35 GHz. The best performance is that 99.94% of the power of a TM-polarized incident wave can be scattered into a single spectral order by a pyramidal crossed grating, while for TE polarization the reduction in specular reflection can be as high as 98%. Anti-reflection properties of a crossed grating with hemispherical cavities near normal incidence are also

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8

Brundrett, David L. "Analysis, design, and applications of subwavelength diffraction gratings." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/15370.

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9

Napier, Bruce. "Writing of holographic diffraction gratings of unrestricted length." Thesis, De Montfort University, 1998. http://hdl.handle.net/2086/5855.

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10

Pierce, Jordan. "Holographic Sculpting of Electron Beams with Diffraction Gratings." Thesis, University of Oregon, 2019. http://hdl.handle.net/1794/24182.

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Electron microscopes offer scientists an invaluable tool in probing matter at a very small scale. Rapid advancements over the past several decades has allowed electron microscopes to routinely image samples at the atomic scale. These advancements have been in all aspects of electron microscope design – such as more stable control voltages and currents, brighter and more coherent sources, beam aberration correction, and direct electron detectors, to name a few. One very recent advancement is in shaping the electron beam to provide an almost arbitrary set of possible beam profi

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11

Bangert, D. E. "Computational studies of gratings." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.344034.

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12

Rockward, Willie Samuel. "Crossed phase gratings using diffractive optical elements." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/31038.

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13

Harris, Jonathan Blair. "Modelling the optical response of multilayered gratings containing liquid crytals." Thesis, University of Exeter, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337766.

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14

Schmittdiel, Michael C. "Active control of a diffraction grating interferometer for microscale devices." Thesis, Available online, Georgia Institute of Technology, 2005, 2004. http://etd.gatech.edu/theses/available/etd-07102004-164021/.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2004.<br>Dr. William P. King, Committee Member ; Dr. F. Levent Degertekin, Committee Member ; Dr. Thomas R. Kurfess, Committee Chair.

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15

Garnier, Jérôme. "Polymer electrochromism and surface plasmons combined on metallic diffraction gratings." Thesis, Linköping University, Department of Science and Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11522.

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<p>All conducting polymers are potentially electrochromic, owing to the injection of charge carriers that changes their electronic structure and results in a shift of their optical absorption towards higher wavelengths. PEDOT-PSS and PEDOT-S are very promising materials in terms of electrochromic properties, due to the good contrast existing between their doped and undoped forms. However this contrast has to be enhanced in order to design more efficient electrochromic devices, and new solutions should thus be found in order to solve this issue.</p><p>Surface plasmons are described as electroma

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16

Suleski, Thomas J. "The talbot effect : Fresnel diffraction of amplitude and phase gratings." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/29829.

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17

Barnes, Robert David Frazer. "Diffraction gratings as a platform for overlayer detection and representation." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319553.

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18

Bisaillon, Eric. "Distributed diffractive structures for micro-optical systems." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=103366.

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In modern communications systems, the components supporting wavelength division for increased density are rapidly becoming small compared with the wavelength of light being manipulated. As the size of these devices shrinks there comes a point when the features of interest become smaller than the wavelength and thereby the fundamental properties of light interaction with such structures change dramatically. In these structures and materials, resonances, effective properties, and band-gaps arise and offer designers a new realm of possibilities for the design of high quality factor resonators, fi

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19

Ehrlich, Jeffrey Ellis. "Nonlinear grating structures in indium antimonide waveguides." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184914.

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This dissertation describes various nonlinear grating coupling phenomena in InSb waveguides. InSb exhibits an opto-thermal, diffusive nonlinearity at 9.6μm. This nonlinearity strongly modifies the growth of a guided wave via the grating coupling of an incident, Gaussian signal. In particular, optical limiting and bistability in the coupled power were demonstrated for a detuned grating coupler. The limits on the detunings were also investigated. The experimental results showed qualitative agreement with a theory based upon a diffusive nonlinearity in the grating coupling process. Also demonstra

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20

Cotter, Nicholas Paul Kyle. "Scattering matrix modelling of optical gratings." Thesis, University of Exeter, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300552.

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21

Kuo, Chai-Pei. "Characterization of photoinduced gratings in optical glass fibers." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184515.

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The properties of photo-induced gratings in germania doped glass fibers were studied. Permanent phase gratings in a fiber core were fabricated by the mixing of two contra propagating waves. Experiments are described and results are presented which show that the strength of a photoinduced grating is strongly dependent on the writing power as well as the laser writing wavelength. A rigorous development of linear coupled mode theory for the contra propagation geometry is given and used to model the experimentally observed grating responses as a function of fine tuning frequency of probing light.

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22

Shi, Lei. "Tunable liquid crystal polarization gratings." [Kent, Ohio] : Kent State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=kent1258988951.

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Thesis (Ph.D.)--Kent State University, 2009.<br>Title from PDF t.p. (viewed Apr. 22, 2010). Advisor: Philip Bos. Keywords: Liquid crystal; beam steering; polarization gratings; diffraction efficiency; decentered microlens array. Includes bibliographical references (p. 216-219).

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23

D'Alberto, Tiffanie Gabrielle. "Long-Period Gratings as Immuno-Diagnostic biosensors." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/30480.

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This research presents a novel biosensor which utilizes the refractive index sensitivity of a fiber optic long-period grating. The long period grating couples light from the forward propagating guided core mode of a single-mode fiber into discrete circularly symmetric cladding modes. Due to imperfections in the cladding surface, loss bands are seen in the transmission spectrum corresponding to the coupled wavelengths. Based on the phase-matching condition between the coupling and coupled modes, the loss bands shift with changes in the refractive index of the surrounding medium. The grating sur

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24

Gushchin, Ivan. "The modal method : a reference method for modeling of the 2D metal diffraction gratings." Thesis, Saint-Etienne, 2011. http://www.theses.fr/2011STET4010/document.

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Les éléments de diffraction sont largement utilisés aujourd'hui dans un nombre grandissant d'applications grâce à la progression des technologies de microstructuration dans le sillage de la micro-électronique. Pour un design optimal de ces éléments, des méthodes de modélisation précises sont nécessaires. Plusieurs méthodes ont été développées et sont utilisées avec succès pour des réseaux de diffraction unidimensionnel de différents types. Cependant, les méthodes existantes pour les réseaux deux dimensionnel ne couvrent pas tous types de structures possibles. En particulier, le calcul de l'eff

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25

Wanstall, Nicholas Peter. "Modelling the electromagnetic response of deep, blazed and overhanging gratings." Thesis, University of Exeter, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288019.

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26

Aslund, Mattas L. "Bragg grating interference devices." Thesis, The University of Sydney, 2004. https://hdl.handle.net/2123/28157.

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This thesis is about novel components designed to enable low-cost optical fiber networks. These networks constitute the global backbone of the in— ternet and all other telecommunication. However, the available technologies are much to expensive to be considered for home-users, so the optical fiber networks only reach as far as the substations half—way to the home—user. Op— tical fiber networks all the way to the home—users is potentially an immense market, and there is a large interest from the industry in novel enabling technologies.

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27

Barrett, Christopher John. "Laser inscription of holographic diffraction gratings in thin films of azo polymers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/nq22445.pdf.

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28

Abd-Eldayem, Ibrahim Ali Mahmoud. "Design and microwave modelling of optical diffraction gratings having shaped scanned beams." Thesis, Cranfield University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261162.

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29

Hutchinson, Glenn David. "Direct laser fabrication of diffraction gratings on polymer thin films and waveguides." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/2563.

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Thesis (M.S.) -- University of Maryland, College Park, 2005.<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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30

Andrew, Piers. "Molecular fluorescence near metallic interfaces." Thesis, University of Exeter, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265270.

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31

Maikisch, Jonathan Stephen. "Compact silicon diffractive sensor: design, fabrication, and functional demonstration." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45882.

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The primary objective of the presented research is to develop a class of integrated compact silicon diffractive sensors (CSDS) based on in-plane diffraction gratings. This class of sensors uses a silicon-on-insulator (SOI) substrate to limit costs, exploit established fabrication processes, enable integration of supporting electronics, and use the well-understood telecommunications wavelength of 1.55µm. Sensing is achieved by combining constant-diffraction-efficiency and highly-angularly-selective in-plane resonance-domain diffraction gratings. Detection is based on the diffraction efficiency

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32

Doroshenko, V. O., N. P. Klimova, N. P. Stognii, and G. V. Sova. "Modeling the Electromagnetic Wave Diffraction on Conical Gratings Consisting of Zero-Thickness PEC Strips." Thesis, 2019 IEEE 8th International Conference on Advanced Optoelectronics and Lasers, CAOL*2019, 2019. https://openarchive.nure.ua/handle/document/16297.

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The periodic gratings are effectively used for producing modern electronics and radio engineering equipment and complexes. The electromagnetic wave diffraction problem for cone gratings is considered. Impedance boundary conditions at cone structure are proposed. The problem of electromagnetic wave diffraction on cone gratings with imperfectly conducting strips is studied. Diagrams of electromagnetic field distribution are given

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33

Gushchin, Ivan. "La méthode modale : une méthode de référence pour la modélisation de réseaux de diffraction métalliques deux dimensionnel." Phd thesis, Université Jean Monnet - Saint-Etienne, 2011. http://tel.archives-ouvertes.fr/tel-00694044.

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Les éléments de diffraction sont largement utilises aujourd'hui dans un nombre grandissant d'applications grâce à la progression des technologies de micro-structuration dans le sillage de la microélectronique. Pour un design optimal de ces éléments, des méthodes de modélisation précises sont nécessaires. Plusieurs méthodes ont été développées et sont utilisées avec succès pour des réseaux de diffraction unidimensionnel de différents types. Cependant, les méthodes existantes pour les réseaux deux dimensionnel ne couvrent pas tous types de structures possibles. En particulier, le calcul de l'eff

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34

Smith, Sean A. "Development of grating light reflection spectroscopy for chemical sensing applications /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/11592.

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35

Hamad, Mazen Lee. "Exploring and developing the instrumental aspects of grating light reflection spectroscopy /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/8610.

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36

Anderson, Brian Benjamin. "Grating light reflection spectroscopy /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/8600.

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37

Smith, Michael Sean Dyck. "Application of the differential method to diffraction gratings that utilize total internal reflection facets." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0006/MQ32250.pdf.

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38

Schultz, Stephen M. "High efficiency volume grating coupler." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/16899.

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39

Urtiga, Lucas. "Long-period gratings in chalcogenide fibers." Thesis, Université Laval, 2010. http://www.theses.ulaval.ca/2010/27124/27124.pdf.

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40

Khalaf, Loay D. "Optimization of periodic devices using the finite element method." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/13758.

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41

Ang, Tze Wei. "Optical grating couplers in silicon-on-insulator." Thesis, University of Surrey, 1999. http://epubs.surrey.ac.uk/843726/.

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The aim of this project is to fabricate highly efficient grating couplers in thin-film silicon-on-insulator (SOI) wafers, which have a silicon (Si) thickness of the order of 1 mum. These thin-film waveguides allow the development of higher speed Si optical modulators, sensors and vertical surface coupling for Si light emitting diodes (LEDs), Hence, SOI rectangular and blazed grating couplers were fabricated where the buried oxide layer in SOI was designed as a reflective layer. The former gratings were fabricated by electron beam lithography followed by reactive ion etching, while the latter g

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42

Aesa, Abdulsattar Ahmad. "Characterisation of laser processed bio-compatible materials and the realisation of electro optical diffraction gratings." Thesis, University of Hull, 2018. http://hydra.hull.ac.uk/resources/hull:16591.

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Laser processing methods using excimer lasers have become very attractive for processing materials and the fabrication of micro and nano optical components. Diffraction gratings are used in a wide range of applications and require different fabrication methods. These components can be fabricated from a variety of biocompatible polymers. In this work, an Argon Fluoride (ArF) excimer laser operating at a wavelength of 193 nm has been used to process chitosan and agarose substrates. These materials have been characterised for differing laser processing conditions. Diffraction gratings and compone

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43

Meng, Xianqin. "Design and fabrication of photonic crystals and diffraction gratings for ultra thin film Si solar cells." Phd thesis, Ecole Centrale de Lyon, 2012. http://tel.archives-ouvertes.fr/tel-00780711.

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Ce travail de thèse est consacré au piégeage de la lumière par des cristaux photoniques(CP) et des réseaux de diffraction. L'objectif consiste à intégrer de telles structures dans des cellules solaires à couches ultra-minces de silicium, afin d'augmenter leur rendement de conversion. Nous avons conçu et optimisé des cellules solaires en silicium cristallin (c-Si) assistées par les CP, grâce à la méthode FDTD (Finite Difference Time Domain). En gravant un CP 2Ddans la couche active de silicium, l'absorption intégrée sur l'ensemble du spectre est augmentée de 50%. Cette amélioration est atteinte

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44

Harper, Kevin Randolph. "Theory, Design, and Fabrication of Diffractive Grating Coupler for Slab Waveguide." Diss., CLICK HERE for online access, 2003. http://contentdm.lib.byu.edu/ETD/image/etd281.pdf.

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45

Blasiak, Thomas C. "Modeling holographic grating imaging systems using the angular spectrum propagation method /." Link to online version, 2006. https://ritdml.rit.edu/dspace/handle/1850/2294.

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46

Goodman, Steven John. "Resonances of scattering in non-uniform and anisotropic periodic gratings at extreme angles." Thesis, Queensland University of Technology, 2006. https://eprints.qut.edu.au/16429/1/Steven_Goodman_Thesis.pdf.

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Bragg scattering of optical waves in thick gratings at extreme angles, where the scattered wave propagates parallel (extremely asymmetric scattering - EAS) or nearly parallel (grazing angle scattering - GAS) to the grating boundaries, is associated with many unique and practically important resonant phenomena. It has been demonstrated that one of the main physical mechanisms for these resonant phenomena is the diffractional divergence of the scattered wave inside and outside the grating region. This thesis fills the gaps in the theoretical and experimental understanding of Bragg scattering in

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47

Goodman, Steven John. "Resonances of scattering in non-uniform and anisotropic periodic gratings at extreme angles." Queensland University of Technology, 2006. http://eprints.qut.edu.au/16429/.

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Bragg scattering of optical waves in thick gratings at extreme angles, where the scattered wave propagates parallel (extremely asymmetric scattering - EAS) or nearly parallel (grazing angle scattering - GAS) to the grating boundaries, is associated with many unique and practically important resonant phenomena. It has been demonstrated that one of the main physical mechanisms for these resonant phenomena is the diffractional divergence of the scattered wave inside and outside the grating region. This thesis fills the gaps in the theoretical and experimental understanding of Bragg scattering in

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48

Glytsis, Elias N. "Interdigitated electrodes and anisotropic diffraction analysis of phase and/or lossy gratings for bulk and integrated applications." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/14817.

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49

Mills, John David. "An investigation of phase-mask diffraction patterns and fibre Bragg gratings with scanning near-field optical microscopy." Thesis, University of Southampton, 2001. https://eprints.soton.ac.uk/15492/.

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In recent years, near-field microscopy has been utilized for assessing the properties of optical wave-guides at an increasing rate. Here, a Scanning Near-field Optical Microscope (SNOM) has been designed and constructed in order to expand this work into an analysis of the optical and structural properties of fibre Bragg gratings, which are used throughout the optical fibre telecommunications network. By imaging the evanescent fields of Bragg gratings, a characterization technique has been developed which has enabled the acquisition of sub-wavelength information about the optical field distribu

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50

Constant, Thomas J. "Optical excitation of surface plasmon polaritons on novel bigratings." Thesis, University of Exeter, 2013. http://hdl.handle.net/10871/9001.

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This thesis details original experimental investigations in to the interaction of light with the mobile electrons at the surface of metallic diffraction gratings. The gratings used in this work to support the resultant trapped surface waves (surface plasmon polaritons), may be divided into two classes: ‘crossed’ bigratings and ‘zigzag’ gratings. Crossed bigratings are composed of two diffraction gratings formed of periodic grooves in a metal surface, which are crossed at an angle relative to one another. While crossed bigratings have been studied previously, this work focuses on symmetries whi

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