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Dissertations / Theses on the topic 'Optical materials'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Thompson, Peter Anthony. "Nonlinear optical materials." Thesis, Cranfield University, 1994. http://dspace.lib.cranfield.ac.uk/handle/1826/4162.

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Twenty different materials have been successfully deposited as Langmuir- Blodgett monolayer films. All exhibit second harmonic generation (SHG) when irradiated with laser light at 1064 nm. E-1-docosyl-4-{2-(4-dimethylami nophenyl)ethenyl}quinolinium bromide (C22H45QHBr) and E-1-docosyl-4-{2-(4-dimethy laminonaphthyl)ethenyl}quinolinium bromide (C22H45QNBr) have been deposited separately as multilayer films. They form Y-type structures when deposition is alternated with the material N-docosyl-4- methylquinolinium bromide. The nonlinear responses are quadratic up to 20 and 10 bilayers respective

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2

Hogben, Mark James. "High throughput optical materials." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/72964/.

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The synthesis and characterisation of a variety of zeolites and aluminosilicates has been achieved using hydrothermal methods and solid state calcinations. The system using elemental aluminium, silica and sodium hydroxide solution as starting materials was explored using hydrothermal methods (200°C), and reactions conditions were optimised for the formation of analcime, sodalite, zeolite A and faujasite. All materials were characterised using powder x-ray diffraction. The thermal conversion of zeolite A and sodium chloride into sodalite has been studied using combined TGA and DTA analysis and

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3

Hill, Isiah Jasper Jr. "Synthesis of azodyes and polyurethanes for use as nonlinear optical materials." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/28930.

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4

Bowmar, Paul. "Optical spectroscopy of novel materials." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259758.

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5

Fitzmaurice, Anthony J. "Characterisation of nonlinear optical materials." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240597.

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6

Stenhouse, Henry G. "Direct bonding dissimilar optical materials." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/420653/.

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This thesis presents the work conducted during this project on direct bonding of dissimilar optical materials at the Optoelectronics Research Centre, University of Southampton. It covers the history and background of the art, before progressing to the development of unique bonding processes used during the research detailed. During this project, direct bonding using chemical and plasma activation is successfully conducted on both amorphous and crystalline materials. Bonding of borosilicate glass is demonstrated in the production of planar structured fibre preforms to be caned. Development of N

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7

Meek, Scott Thomas. "New optical materials containing isobenzofuran." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/49742.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2009.<br>Includes bibliographical references.<br>Isobenzofuran, a member of the benzo[c]heterocycles, is an extremely reactive molecule with unusual electronic properties. In this thesis we investigate the integration of isobenzofuran subunits into conjugated optical materials. We discuss the properties of isobenzofuran, its role in organic chemistry, and the synthesis of isobenzofuran containing materials in the context of the other well known benzo[c]heterocycle, isothianaphthene. Isothianaphthene has been used in co

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8

Hartschuh, Ryan D. "Optical Spectroscopy of Nanostructured Materials." University of Akron / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=akron1195016254.

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9

Xu, Chenzhi. "Optical Spectrocopy on Nanostructrured Materials." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174866.

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Solar cells are designed to transform the optical energy into electrical energy. Using solar energy is the best way for humans to solve the energy shortage problem. Dye sensitized solar cell(DSSC) has a low cost and helps people to obtain the solar energy expediently. The DSSC is based on nano structured TiO2 ; and dye molecules help the particles of TiO2 to absorb more photons. Hence DSSC has higher efficiency than SC(solar cell without dye). This thesis elaborates and analyzes the dye which is sensitized to TiO2. The absorption spectrum of the dye was achieved. Two kinds of dye sample were m

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10

Fox, Phillip James. "Optical studies of thermoluminescent materials /." Title page, contents and summary only, 1990. http://web4.library.adelaide.edu.au/theses/09PH/09phf793.pdf.

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11

Kawatsuki, Nobuhiro. "Synthesis of new organic optical materials for micro-optical devices." Kyoto University, 1994. http://hdl.handle.net/2433/74659.

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12

Namnabat, Soha, and Soha Namnabat. "Novel Optical Materials for Passive Photonic Applications." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/623168.

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Advances in photonic materials are critical to the progress of photonic devices and optical systems. Even though a variety of materials, e.g. semiconductors, oxide based glasses, and polymers exist which are being used for numerous applications, there is a growing need to develop and find new materials in order to push the limits we are bound by with conventional materials, in pursuit of higher performance, higher levels of integration and lower cost. In this realm, new material development has had a considerable impact, as it is the material properties (optical, thermal, mechanical, electrica

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13

Rybka, Marcin. "Optical properties of MAX-phase materials." Thesis, Linköping University, Applied Optics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-60008.

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<p> </p><p><p> </p></p><p><p><p> </p></p></p><p>MAX-phase materials are a new type of material class. These materials are potentiallyt echnologically important as they show unique physical properties due to the combination of metals and ceramics. In this project, spectroscopic ellipsometry in the spectral range of 0.06 eV –6.0 eV was used to probe the linear optical response of MAX-phases in terms of the complexd dielectric function <em>ε(ω) = ε1(ω) + iε2(ω<em>). </em></em>Measured data were fit to theoretical models using the Lorentz and generalized oscillator models. Data from seven differen

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14

Strömqvist, Gustav. "Nonlinear response in engineered optical materials." Doctoral thesis, KTH, Laserfysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-92221.

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Material and structure engineering are increasingly employed in active optical media,in this context defined as media capable of providing laser or/and optical parametric gain. For laser materials, the main aim of the engineering is to tailor the absorption and emission cross sections in order to optimise the laser performance. At the same time, the engineering also results in a collateral modification of the material’s nonlinear response. In the first part of this work, the nonlinear index of refraction is characterised for two crystallographic forms of laser-ion doped and undoped double-tung

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15

Crennell, Susan J. "Structural studies on nonlinear optical materials." Thesis, University of Oxford, 1991. https://ora.ox.ac.uk/objects/uuid:90bd1eb3-fa55-4fc5-8135-88b9fcc16de6.

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This thesis reports the synthesis and structural characteristics of solid solutions derived from KTP,KTiOPO<sub>4</sub> (space group Pn2<sub>la</sub>, Z=8, a=12.814(6)Ã, b=10.616(5)Ã, c= 6.404(2)Ã) with substitution of K by Na and Rb; Ti by Sn, Ge and Cr; and P by As. The KTiOPO<sub>4</sub> structure contains two formula units per asymmetric unit and hence two crystallographically distinct K, Ti and P sites. This makes substituent ordering possible with selective modification of the nonlinear optical properties. K<sub>0.5</sub>Na<sub>0.5</sub>TiOPO<sub>4</sub>, (occupancy K(1):96(7)%Na, K(2

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16

Scoffin, Robert A. "New materials for optical information storage." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365756.

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17

Breen, Gary Francis. "Novel materials showing nonlinear optical behaviour." Thesis, University of Liverpool, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316594.

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18

Sorazu, Lucio Borja. "Optical techniques for examining mechanical materials." Thesis, University of Strathclyde, 2006. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27070.

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Advances in sensors-actuators technology and signal processing are revolutionizing Structural-Health Monitoring and Non-destructive Testing with the integration of sensing-actuating capabilities into the structure. We demonstrate ultrasonic guided-wave detection capabilities of four optic fibre sensors (OFS) and experimentally address their damage detection and location potential, based on their sensing high directivity. Various signal processing methods that look into perturbations caused over guided-waves propagation characteristics are discussed for damage detection and location application

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19

Zeng, Yong. "Optical properties of active photonic materials." Doctoral thesis, Stockholm : Bioteknologi, Kungliga Tekniska högskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4497.

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20

QUATELA, ALESSIA. "Electrical and all-optical poling of nonlinear optical materials: relaxation dynamics." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2005. http://hdl.handle.net/2108/202923.

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Il presente lavoro è motivato dalla necessità di trovare nuovi materiali polimerici o ibridi organiciinorganici per la realizzazione di modulatori elettroottici. Per essere utilizzati in un dispositivo reale, i materiali dotati di proprietà ottiche nonlineari devono possedere elevata attività nonlineare e stabilità temporale. Affinché un materiale esibisca proprietà ottiche nonlineari del secondo ordine, esso deve essere sottoposto ad una procedura post-deposizione che definisca una direzione preferenziale in un sistema in partenza centrosimmetrico. A questo scopo sono state utilizzate due div

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21

Himmelhuber, Roland. "Sol-Gel Materials for Optical Waveguide Applications." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/325227.

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Sol-gel materials are an important material class, as they provide for easy modification of material properties, good processability and routine synthesis. This allows for the tailoring of the material properties to the needs of specific device designs. In the case of electro-optic modulators with a coplanar or coplanar strip (CPS) electrode design, sol-gel cladding materials can be used to confine the light to the electro-optic material as well as to concentrate the electrical field used for poling and driving the modulator. Another important material property that can influence the poling ef

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22

Blomqvist, Mats. "Electro-Optical Na0.5K0.5NbO3 Films." Doctoral thesis, KTH, Mikroelektronik och Informationsteknik, IMIT, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-193.

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Ferroelectric oxides are a group of advanced electronic materials with a wide variety of properties useful in applications such as memory devices, resonators and filters, infrared sensors, microelectromechanical systems, and optical waveguides and modulators. Among the oxide perovskite-structured ferroelectric thin film materials, sodium potassium niobate or Na0.5K0.5NbO3 (NKN) has recently emerged as one of the most promising materials in radio frequency (rf) and microwave applications due to high dielectric tenability and low dielectric loss. This thesis presents results on growth and struct

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23

Neelamraju, Bharati. "Characterization Techniques for Photonic Materials." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/613403.

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The advancement of photonics technologies depends on synthesis of novel materials and processes for device fabrication. The characterization techniques of the optical, electrical and magnetic properties of the synthesized materials and devices, by non-contact, non-invasive and nondestructive methods plays a significant role in development of new photonics technologies. The research reported in this thesis focuses on two such aspects of photonic materials characterization: Magneto-Optic characterization and Spectroscopic Ellipsometry. The theoretical and experimental basis of these two techniq

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24

Wallace, Paul M. "Microscopy studies of non-linear optical materials /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/8525.

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25

Dong, Lin. "Optical Properties of Nanoparticles in Composite Materials." Doctoral thesis, KTH, Optik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-103428.

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Nanoparticles are synthetic structures with dimension from 1 to 100 nanometers and are various in types. Some favorable properties peculiar to the nanoparticles (generally owing to size effects) make them prevailing and beneficial for applications in different scientific and engineering fields. A large portion of these properties find their connection to optics and photonics. In the context of optics, the thesis is devoted to study of two specific categories of nanoparticles, gold nanoparticles and CdSe-CdS core-shell quantum dots, aiming at investigating the influence and potential of the par

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26

Shahinian, Hossein. "Fiber Based Tools for Polishing Optical Materials." Thesis, The University of North Carolina at Charlotte, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10786249.

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<p> In this dissertation, the development of alternative fiber based polishing tools for the finishing of precision freeform and aspherical optics is introduced. Freeform and aspherical optics, i.e. optics with varying radius of curvatures (ROC), are the current forefront for solutions for modern optical systems, enabling more compact and higher performance designs than possible with systems composed of classical optical components, i.e. planar and spherical optics. The technological challenges associated with the fabrication of freeform optics include; (1) identification of suitable tooling c

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27

Reilly, Thomas H. III. "Plasmonic materials for optical sensing and spectroscopy." Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3239396.

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28

Han, Tiantian. "Optical Properties of Low Dimensional Semiconductor Materials." Doctoral thesis, Stockholm : School of Biotechnology, Royal Institute of Technology (KTH), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4699.

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29

Wu, J. "Materials for electron trapping optical memory (ETOMS)." Thesis, Coventry University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289102.

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30

Chao, Yimin. "Electronic and optical properties of nanostructured materials." Thesis, University of Newcastle Upon Tyne, 2003. http://hdl.handle.net/10443/588.

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Three types of nanostructured materials have been investigated: C60 on InP (100), Indium clusters on InP (100) and luminescent alkylated-Si quantum dots. The growth model and electronic structureOf C60molecules adsorbed on InP (100) were studied by XPS and UPS as a function of coverage and annealing temperature. The C Is, P 2p, In 4d core levels and the valence band spectra point to the presence of a localized covalent bond between C60 molecules and the substrate. No filling of the lowest unoccupied molecular orbit derived bands was observed. The absence of any change in the surface components

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31

Wallington, Sally-Ann. "Sol-gel materials for optical chemical sensing." Thesis, University of Kent, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308948.

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32

Mohamed, Norani M. "Electrical and optical properties of organic materials." Thesis, University of Essex, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333723.

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33

Drevinskas, Rokas. "Engineered optical materials by ultrafast laser nanostructuring." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/419485/.

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This thesis is focused on ultrafast laser induced modification in optical materials including transparent dielectrics, high-index semiconductors, and glass-metal nanocomposites. Under certain conditions, ultrafast laser direct writing through a nonlinear light-matter interaction enables a high-precision nanostructuring. This type of the modification exhibits form birefringence and/or dichroism enabling the fabrication of polarization sensitive optical elements. The main activities involved in the research are the optimization of light-mater interaction processes, engineering the optical proper

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34

Li, Ling Ph D. Massachusetts Institute of Technology. "Biomineralized structural materials with functional optical properties." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/89955.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 129-143).<br>Many biological structural materials exhibit "mechanical property amplification" through their intricate hierarchical composite designs. In the past several decades, significant progress has been achieved in elucidating the structure/mechanical property relationships of these materials. However, the design strategies of structural biomaterials with additional functional roles are still l

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35

Palacios, Manuel A. "Materials and Strategies in Optical Chemical Sensing." Bowling Green State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1225902887.

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36

Ramesh, Prashanth. "Smart Materials for Electromagnetic and Optical Applications." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343821988.

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37

Cheng, Hsiang-Nan, and Hsiang-Nan Cheng. "Diamond Turning Properties of Plastic Optical Materials." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/625700.

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With sub-micrometric form accuracy and nanometer scale surface roughness, the diamond turning process provides a great solution of fast prototyping optical systems with aspheric or freeform surfaces. On the other hand, with relatively lower cost and lighter weight, optical plastics are now widely used in consumer products. To study and optimize the cutting parameters of the diamond turning process on optical plastics, a series of tests with different cutting parameters settings are conducted on seven different optical plastic materials: E48R, OKP1, OKP4, OKP4HT, PC, PMMA, and Rexolite 1422. Th

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38

Kim, Seongjun [Verfasser]. "Nanoporous materials for optical applications / Seongjun Kim." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2020. http://d-nb.info/1224883616/34.

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39

Åkerlind, Christina. "Optical Studies of Materials for Spectral Design." Licentiate thesis, Linköpings universitet, Tillämpad optik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-115369.

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Optical material properties have been studied in a wide wavelength range. Theaim is future use of spectral design for camou age. The main characterization techniques used in this work are Refection Spectroscopy, Scatterometry (BRDF) and Mueller Matrix Ellipsometry. Six camouflage evaluation criteria based on reflection, emissivity, polarization, gloss, dynamic coloring and broadband properties, are to a greater or lesser degree related to the interaction between light and materia. Almost all are connected to the work of this thesis and are exemplied through dierent material categories with pot

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40

Martin, Simon John. "Electroabsorption studies of conjugated materials." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320080.

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41

Walish, Joseph John. "Bio-inspired optical components." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45950.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2008.<br>Includes bibliographical references.<br>Guiding electro-magnetic radiation is fundamental to optics. Lenses, mirrors, and photonic crystals all accomplish this task by different routes. Understanding the interaction of light with materials is fundamental to improving and extending optical science and engineering as well as producing novel optical elements. Improvement in this understanding should not only include work to understand the interaction with traditional engineering materials

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42

Wu, Yeheng. "Photonic Crystals with Active Organic Materials." Cleveland, Ohio : Case Western Reserve University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=case1269618198.

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Thesis(Ph.D.)--Case Western Reserve University, 2010<br>Title from PDF (viewed on 2010-04-12) Department of Physics Includes abstract Includes bibliographical references and appendices Available online via the OhioLINK ETD Center

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43

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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44

Xiao, Bin, and 肖斌. "Photoluminescence study of ZnO materials." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47153593.

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　Zinc oxide (ZnO) is a wide band gap (3.4eV at 300K) II-VI semiconductor with an exciton binding energy up to 60meV and is promising in the realization of excitonic or polaritonic lasing effect. Photoluminescence is widely used in studying the band gap and defect levels of ZnO. However, understanding in defects of ZnO is still far from satisfaction and remains controversial. Different authors suggest different explanations and mechanisms. 　In the present study we investigate in the photoluminescence spectra of four kinds of ZnO single crystal, namely as-grown (not implanted) Zn-face polished

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45

Neff, Curtis Wayne. "Optical Properties of Superlattice Photonic Crystals." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/14108.

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Photonic band gap materials, commonly referred to as photonic crystals (PCs), have been a topic of great interest for almost two decades due to their promise of unprecedented control over the propagation and generation of light. We report investigations of the optical properties of a new PC structure based upon a triangular lattice in which adjacent [i, j] rows of holes possess different properties, creating a superlattice (SL) periodicity. Symmetry arguments predicted and quot;band folding and quot; and band splitting behaviors, both of which are direct consequences of the new basis that con

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46

Grelaud, Guillaume. "New electrochromic organometallic materials for light modulation." Phd thesis, Rennes 1, 2012. http://www.theses.fr/2012REN1S120.

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Au cours de cette thèse, de nouveaux complexes alcynyles du fer et du ruthénium ont été synthétisés et caractérisés. Ces composés ont été élaborés pour permettre l'électro-commutation de leurs propriétés en optique non linéaire (ONL) entre plusieurs états redox. Dans un premier temps, des unités hétéro-bimétalliques ferrocène-ruthénium ont été étudiées. Il a pu être démontré que ces unités, qui sont des complexes à valence mixte de classe II dans leur état mono-cationique, possèdent les propriétés électrochromiques requises pour leur incorporation dans des assemblages conjugués plus étendus et

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47

Ding, Lu. "Optical and magneto-optical studies of crystalline and nano-structured zinc oxide /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202007%20LU.

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48

Xiao, Zhizhao. "Optical properties of zinc oxide nanostructure materials using near-field scanning optical microscopy /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202007%20XIAO.

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49

Zhao, Yu. "Growth and optical characterization of Sb-based materials on InP for optical telecommunication." Thesis, Rennes, INSA, 2014. http://www.theses.fr/2014ISAR0002/document.

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Ce travail de thèse porte sur la croissance et sur la caractérisation optique de nanostructures à base d’antimoine sur substrats InP, en vue d’applications dans le domaine des télécommunications optiques. La transition inter-sous-bande est un processus ultrarapide qui permet la modulation de la lumière dans les réseaux de télécommunication optique. Durant cette thèse, une absorption inter-sous-bande dans le proche-infrarouge provenant de puits quantiques Ga0.47In0.53As/AlAs0.56Sb0.44 a été observée pour la première fois au laboratoire. Les analyses par microscopie électronique à effet tunnel s

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50

Padilla, Willie John. "Investigation of the terahertz, infrared, optical and magneto-optical properties of novel materials /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC IP addresses, 2004. http://wwwlib.umi.com/cr/ucsd/fullcit?p3120458.

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