Log in

Relevant bibliographies by topics / Optics and opto-electronic physics / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Optics and opto-electronic physics.

Dissertations / Theses on the topic 'Optics and opto-electronic physics'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 January 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Optics and opto-electronic physics.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Scheidt, Torsten. "Non-linear optical diagnostics of non-centrosymmetric opto-electronic semiconductor materials." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/17332.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Ghosh, Sujoy. "SYNTHESIS, ELECTRONIC AND OPTO-ELECTRONIC TRANSPORT PROPERTIES OF ATOMICALLY THIN 2D LAYERS OF MoS2, WSe2 and CuIn7Se11." OpenSIUC, 2016. https://opensiuc.lib.siu.edu/dissertations/1308.

Full text

Abstract:

The recent emergence of a new class of two dimensional layered materials (2DLMs) have not only opened up the potential for exciting new technological opportunities but also established a new platform to explore exciting new fundamental physics and chemistry at the limit of atomic thickness. Among several of these newly rediscovered 2DLMs, transition metal dichalcogenides (TMDCs) as well as other elemental combinations of Group III and Group VI represent a large family of 2D layered materials, which can be isolated into few atomic layers. These materials show remarkable promise for future elect

APA, Harvard, Vancouver, ISO, and other styles

3

Luong, Vu Hai Nam. "Studying optical micro-resonators coupling for future insertion in an opto-electronic oscillator." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2012. http://tel.archives-ouvertes.fr/tel-00905958.

Full text

Abstract:

The classical structure of an Opto-Electronic Oscillator (OEO) is based on a long fiber loop acting as a delay line and leading to the high spectral purity, or very low phase noise, of the oscillator. Such an OEO has been developed in SATIE/LPQM laboratory at ENS Cachan, operating at 8 GHz frequency. However, this system has some main disadvantages such as a bulky size, the difficulty to control temperature and a wide range of peaks among which it is difficult to select only one mode. In order to eliminate these disadvantages, high quality factor optical resonator can be used instead of the op

APA, Harvard, Vancouver, ISO, and other styles

4

Alam, Md Shah. "Additive Nanomanufacturing based on Opto-Thermo-Mechanical Nano-Printing." University of Dayton / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1591871749553767.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Seyd, Darwish Iyad. "Etude et réalisation d'un automate cellulaire opto-électronique parallèle." Phd thesis, Université Paris Sud - Paris XI, 1991. http://pastel.archives-ouvertes.fr/pastel-00732332.

Full text

Abstract:

Les automates cellulaires, composes d'un grand nombre de processeurs élémentaires, permettent un traitement rapide et efficace de certaines algorithmes. Le présent travail étudie la possibilité d'une implantation parallèle d'un tel automate sur un circuit intégré avec des entrées optiques en utilisant des photodiodes intégrées et un illuminateur de tableaux et des sorties optoélectroniques avec des modulateurs a puits quantiques multiples. Différents composants ont été étudiés et réalisés dans ce but: illuminateur de tableaux réalisé sur un hologramme en utilisant l'effet d'imagerie de talbot.

APA, Harvard, Vancouver, ISO, and other styles

6

Bocheux, Amandine. "Maîtrise des processus opto-électroniques d'architectures moléculaires π-conjuguées : auto-assemblage et sonde locale". Phd thesis, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00748715.

Full text

Abstract:

Ce travail de thèse porte sur l'étude des limites physiques requises pour la conception d'une diode organique électroluminescente à l'échelle la plus réduite qui soit, celle d'un faible nombre d'atomes. Nous avons travaillé avec plusieurs systèmes moléculaires organiques π-conjugués afin de déterminer les critères essentiels que doit remplir une molécule pour pouvoir être utilisée comme telle. Dans ce cadre, le Microscope à Effet Tunnel s'avère être un outil particulièrement adapté pour étudier l'auto-assemblage de tous ces systèmes sur une surface ainsi que pour positionner avec une haute pré

APA, Harvard, Vancouver, ISO, and other styles

7

Mccafferty, Sean. "Analysis and application of opto-mechanics to the etiology of sub-optimal outcomes in laser corrective eye surgery and design methodology of deformable surface accommodating intraocular lenses." Thesis, The University of Arizona, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1589573.

Full text

Abstract:

<p> <b>Overview:</b> Optical concepts as they relate to the ophthalmologic correction of vision in corneal laser vision correction and intraocular lens design was examined. </p><p> <b>Purpose:</b> The interaction between the excimer laser and residual corneal tissue in laser vision correction produces unwanted side effects. Understanding the origin of these artifacts can lead to better procedures. Furthermore, accommodating intraocular lenses offer a potential for eliminating presbyopia. Understanding the properties of a new accommodating intraocular lens incorporating a deformable interface

APA, Harvard, Vancouver, ISO, and other styles

8

Snell, Rodney James 1965. "A digital-electronic video-rate reconstruction system for magnetic resonance imaging." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/278071.

Full text

Abstract:

A digital-electronic video-rate reconstruction system for Magnetic Resonance Imaging (MRI) has been designed to first order. The maturation of ultra-fast acquisition techniques in MRI has produced the need for a reconstruction system that will enable dynamic processes to be viewed on-line. Conventional reconstruction hardware is not configured for real-time reconstruction and previous developments are limited in accuracy and flexibility. The real-time reconstruction system presented here consists of three main subsystems. A digitizer interfaces with an MR scanner to digitize data matrices of r

APA, Harvard, Vancouver, ISO, and other styles

9

Saini, Anuj. "FROM APPLICATION OF ORGANIC THIN MULTILAYER FILMS IN 3D OPTICAL DATA STORAGE TO THEIR FABRICATION FOR ORGANIC ELECTRONIC DEVICES." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1459518551.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Erbing, Axel. "In pursuit of next generation photovoltaics : An electronic structure study of lead-free perovskite solar cells." Licentiate thesis, Stockholms universitet, Fysikum, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-181608.

Full text

Abstract:

The recent development of perovskite-based solar cells have shown a remarkably fast increase in power conversion efficiency making them a promising low-cost alternative to conventional cells. The most successful class of materials however, the lead-halide perovskites, are held back due to toxicity and stability issues significantly limiting their use. Because of this, the investigation of new, lead-free, light-absorber materials as a replacement is an important step towards improved solar cells. The focus of this licentiate thesis is the study of bismuth-based materials and their photovoltaic

APA, Harvard, Vancouver, ISO, and other styles

11

Gavrilyuk, Sergey. "Molecular electronic, vibrational and rotational motion in optical and x-ray fields." Doctoral thesis, Stockholm : School of Biotechnology, Royal Institute of Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11386.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Armakavicius, Nerijus. "Study of novel electronic materials by mid-infrared and terahertz optical Hall effect." Licentiate thesis, Linköpings universitet, Halvledarmaterial, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-142220.

Full text

Abstract:

Development of silicon based electronics have revolutionized our every day life during the last three decades. Nowadays Si based devices operate close to their theoretical limits that is becoming a bottleneck for further progress. In particular, for the growing field of high frequency and high power electronics, Si cannot offer the required properties. Development of materials capable of providing high current densities, carrier mobilities and high breakdown fields is crucial for a progress in state of the art electronics. Epitaxial graphene grown on semi-insulating silicon carbide substrates

APA, Harvard, Vancouver, ISO, and other styles

13

Ouerghemmi, Ezzeddine. "Étude physique des limites en puissance des lasers à cascade quantique." Phd thesis, Ecole Polytechnique X, 2011. http://pastel.archives-ouvertes.fr/pastel-00605931.

Full text

Abstract:

Cette thèse concerne l'étude théorique et expérimentale des limitations de la puissance de sortie des lasers à cascade quantique (LCQ). Nous y exposons une modélisation globale de leurs propriétés électro-optiques. Le fonctionnement du laser est décrit en incluant la structure électronique, les mécanismes de diffusion responsables des transitions non radiatives des électrons et le couplage électron- photon de la cavité. Ce modèle nous a permis de reproduire avec succès l'ensemble des caractéristiques (courant et puissance optique en fonction de la tension appliquée) d'un LCQ sur un large domai

APA, Harvard, Vancouver, ISO, and other styles

14

Audo, Frédéric. "Opto-alimentation et transmission de données par fibre optique pour les observatoires de fond de mer." Phd thesis, Université de Bretagne occidentale - Brest, 2012. http://tel.archives-ouvertes.fr/tel-00782502.

Full text

Abstract:

Ce mémoire de thèse est consacré à l'étude d'une liaison tout-optique longue de 10 km dédiée à l'extension d'un observatoire câblé de fond de mer existant afin d'atteindre de nouvelles zones d'exploration. Les travaux de recherche qui y sont rapportés démontrent la faisabilité de cette liaison tout-optique entre un instrument déporté et une station terrestre avec une seule fibre optique longue de 10 km, qui transmet simultanément la puissance, nécessaire à l'alimentation de l'instrument (quelques centaines de milliwatts), et des données bidirectionnelles en temps réel.Le contexte de cette thès

APA, Harvard, Vancouver, ISO, and other styles

15

Lidberg, Gustav, Karl Pontén, and Johan Millberg. "Design of Optical Magnetic Systems for Terahertz Lensing." Thesis, Uppsala universitet, FREIA, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-445114.

Full text

Abstract:

When graphene is subjected to magnetic fields, it can be used as an optical device with light in the terahertz region. The functionality of the graphene depends on which magnetic field profile is influencing it. In this project, magnet configurations producing uniform and quadratic magnetic field profiles were studied. A script was written that allowed the user to place dipoles and ring magnets in the proximity of a graphene disc. The script would then determine the necessary dimensions of the permanent magnets used to produce the target magnetic field. The resulting magnetic configurations ha

APA, Harvard, Vancouver, ISO, and other styles

16

Khreis, Osama M. "Interdiffusion in III-V opto-electronic materials." Thesis, University of Surrey, 1997. http://epubs.surrey.ac.uk/844237/.

Full text

Abstract:

Photoluminescence coupled with repetitive thermal annealing has been used to study the thermal interdiffusion processes in both InGaAs and GaAsSb grown on GaAs substrates. The effect of growth temperature and group-V to group-III flux ratio were studied in InGaAs MQW wafers. The wells in the MQW stack were grown at different temperatures, one of which was grown well below the standard growth temperature to act as a vacancy source in the MQW stack. Due to this vacancy source we have been able to simultaneously measure the In-Ga interdiffusion coefficient, diffusion coefficient for group-III vac

APA, Harvard, Vancouver, ISO, and other styles

17

Wang, Shouyin. "Characterisation of ZnSe and ZnCdSe/ZnSe opto-electronic devices." Thesis, Heriot-Watt University, 1994. http://hdl.handle.net/10399/1394.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Foster, Howard Allen Jr. "Opto-electronic Technique For Error Fault Detection In Textile Joining Applications." NCSU, 2002. http://www.lib.ncsu.edu/theses/available/etd-08062002-183215/.

Full text

Abstract:

The purpose of this research has been to develop an opto-electronic method for detecting error faults in textile joining applications. The application of this study would be in on-line determination of skipped stitches in seam sewing operations. The research begins with a selection of materials that covers a range of textile materials commonly used, and then determining several physical parameters based upon industry standards. The next portion of the research is to determine the proper wavelength of light to use for the opto-electronics, using near infrared and visible spectrophotometric tech

APA, Harvard, Vancouver, ISO, and other styles

19

De, Amritanand. "Spin dynamics and opto-electronic properties of some novel semiconductor systems." Diss., University of Iowa, 2009. https://ir.uiowa.edu/etd/352.

Full text

Abstract:

A set of problems pertaining to quantum information processing in semiconductors is investigated. Two schemes for implementing electronic qubits in strong and weak three dimensional quantum confinement regimes are studied along with their related electronic properties. Recent experiments motivated us to calculate electronic properties and g factors for nanowhisker quantum dots. These calculations were done using 8 band strain dependent k.p theory on a 3D grid and are in excellent agreement with experiment. It has been observed that the growth conditions cause the nanowhiskers to crystallize in

APA, Harvard, Vancouver, ISO, and other styles

20

Kahn, Mohammed Tariq Ekeramodien. "Miniaturised dedicated application opto-electronic sensors in the evolution of smart systems." Thesis, Peninsula Technikon, 2002. http://hdl.handle.net/20.500.11838/1196.

Full text

Abstract:

Thesis (DTech (Electrical Engineering))--Peninsula Technikon, Cape Town, 2002<br>In the last decade, the South Amcan Electricity Supply Commission would have had their ability to serve an ever demanding public severely tested. With the dilemma of providing electricity supply through hazardous environmental conditions, and with prospects of supplying power even beyond South Afiican borders, the need for a comprehensive damage and power delivery assessment strategy becomes all the more relevant. The rapid growth being made in the evolution of so called "intelligent" structures, with

APA, Harvard, Vancouver, ISO, and other styles

21

Birkett, M. J. "Opto-electronic studies of semiconductor tunnelling structures and quantum wells." Thesis, University of Sheffield, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267179.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Morris, Randy W. Jr. "PROPEL: Power & Area-Efficient, Scalable Opto-Electronic Network-on-Chip." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1244146228.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Thorat, Ruhi P. "Opto-Electronic Properties of Self-Contacted MoS2 Monolayer Devices." Ohio University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1512731597427663.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Peggs, Derek William. "Spectroscopic studies of the opto-electronic properties of quantum wells and superlattices." Thesis, University of Sheffield, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364305.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Adrados, Claire. "Polaritons en microcavité semi-conductrice : dynamique de fluide quantique, effets de spin et mesures de bruit en régime d'oscillation paramétrique." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00789192.

Full text

Abstract:

Ce travail est consacré à l'étude des propriétés des polaritons, particules mi-lumière mi-matière, en microcavité semi-conductrice. Leur caractère bosonique autorise l'accès à des régimes de cohérence macroscopique tels la condensation de Bose-Einstein et la superfl uidité que nous avons démontrée expérimentalement. Nous avons également développé une technique permettant de modifier optiquement l'environnement polaritonique par création de défauts arti ficiels, ce qui facilite l'obtention de comportements particuliers du fluide polaritonique comme la turbulence. Les fortes interactions dépenda

APA, Harvard, Vancouver, ISO, and other styles

26

Vettese, Carlo Ettore. "The effects of multi-quantum well inter-mixing on long-wavelength opto-electronic structures and devices." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387226.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Chryssou, Costas. "Fabrication, characterisation and modelling of rare-earth doped alumina (A1203) thin films for opto-electronics." Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299285.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Celebi, Kemal. "Optical modeling of organic electronic devices." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45431.

Full text

Abstract:

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Physics, 2008.<br>Includes bibliographical references (p. 51-53).<br>Organic materials, with their superior photoluminescence and absorbance properties have revolutionized the technologies for displays and solar energy conversion. Due to the large transition dipoles, the localization of excited states or excitons in organic materials necessitates optical models that extend beyond classical far field methods. In this thesis we propose an extended near field calculation method using dyadic Green's functions and demonstrate the applic

APA, Harvard, Vancouver, ISO, and other styles

29

Rajaniemi, T. (Tatu). "Electronic and optical properties of TiO₂ nanoclusters." Master's thesis, University of Oulu, 2016. http://urn.fi/URN:NBN:fi:oulu-201612103250.

Full text

Abstract:

The electronic and optical properties of the anatase polymorph of titanium dioxide has been studied using software based on density functional theory. In addition, the performance of different methods and approximations in acquiring these properties have been evaluated. The calculated properties include lattice constants and density of states of bulk material and photoabsorption spectra of nanoclusters. The original goal was to investigate, whether excitonic effects are significant in the optical properties of anatase nanoclusters. It was found that the GPAW software package could not be used

APA, Harvard, Vancouver, ISO, and other styles

30

Hempel, Martin. "Defect mechanisms in diode lasers at high optical output power." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2013. http://dx.doi.org/10.18452/16834.

Full text

Abstract:

In dieser Arbeit wird der Catastrophic Optical Damage (COD) zeitaufgelöst untersucht um die beteiligten physikalischen Mechanismen zu identifizieren. Der COD Prozess konnte zeitlich in drei Phasen unterteilt werden, die Alterung, der thermische Runaway (selbst verstärkende Rückkopplung) und das Sekundärschadenswachstum. Die erste Phase konnte durch eine neu eingeführte Art der beschleunigten Bauteilalterung auf den Nanosekunden-Bereich reduziert werden. Die Rolle des Laser-Lichtfelds als Energiequelle des COD-Prozesses wurde experimentell bestätigt. Die genutzten thermographischen Techniken

APA, Harvard, Vancouver, ISO, and other styles

31

Schediwy, Sascha W. "Optical spring parametric interactions in a macroscopic opto-mechanical resonator." University of Western Australia. School of Physics, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0161.

Full text

Abstract:

[Truncated abstract] The research described in this thesis investigated optical spring interactions and instabilities in a macroscopic opto-mechanical resonator. The thesis describes an experiment designed to model an optical spring `tranquiliser’ cavity which has been proposed to suppress the predicted parametric instabilities in the next generation of interferometric gravitational wave detectors. In a series of experiments, the optical spring effect was observed in macroscopic optical cavities through measured changes in mechanical stiffness, and measured changes in mechanical loss. The opti

APA, Harvard, Vancouver, ISO, and other styles

32

Matthews, Manyalibo Joseph 1970. "Electronic and optical properties of novel carbon structures." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/50006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Elfurawi, Umaima. "Optical and electronic properties of PbS colloidal nanocrystals." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/12542/.

Full text

Abstract:

This thesis describes the optical and electrical properties of colloidal PbS nanocrystals synthesized in aqueous solution and comprising different capping ligands and/or matrices. Post-synthesis thermal annealing of thiol-capped PbS colloidal quantum dots (QDs) is discussed and shown to provide a novel means of tailoring the morphological and electronic properties of the QDs. Two different regimes are reported: at low annealing temperatures (< 80oC), the annealing provides a simple strategy for controlling and narrowing the QD size distribution and photoluminescence emission. At higher anneali

APA, Harvard, Vancouver, ISO, and other styles

34

McNamee, Michael Jonathan. "Optical studies of electronic excitations in II-VI semiconductors." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359471.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Zoryk, Andrew. "The electronic and optical properties of HgTe-CdTe superlattices." Thesis, University of Newcastle Upon Tyne, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244879.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Gell, Michael A. "Electronic and optical properties of III-V semiconductor superlattices." Thesis, University of Newcastle Upon Tyne, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.352920.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Warren, Rachel Frances. "Optical, electronic and structural properties of metal halide intercalates." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333365.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Vladisavljevic, Milos. "Electronic and Optical Properties of an Artificial Benzene Ring." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31724.

Full text

Abstract:

In this thesis, we develop the methodology for exploring the electronic and optical properties of an artificial benzene ring, both analytically as well as numerically through direct diagonalization using the configuration interaction method. We use the extended Hubbard Hamiltonian to model the interactions with different numbers of electrons, with spin projection and total spin resolved as good quantum numbers. The focus in this work is on the charged case and the emergence of an artificial gauge field and how it can be detected optically. We also examine three other cases of the artificial be

APA, Harvard, Vancouver, ISO, and other styles

39

Reed, Evan J. (Evan John) 1976. "Optical, electronic, and dynamical phenomena in the shock compression of condensed matter." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/16935.

Full text

Abstract:

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2003.<br>Includes bibliographical references (leaves 109-113).<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Despite the study of shock wave compression of condensed matter for over 100 years, scant progress has been made in understanding the microscopic details. This thesis explores microscopic phenomena in shock compression of condensed matter including electronic excitations at the shock front, a new dynamical fo

APA, Harvard, Vancouver, ISO, and other styles

40

Xu, Jinsong. "Electronic and Spin Dependent Phenomena in Two-Dimensional Materials and Heterostructures." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1531925662989238.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Cusack, Mark Alexander. "Electronic and optical properties of semiconductor quantum wells and dots." Thesis, University of Newcastle Upon Tyne, 1996. http://hdl.handle.net/10443/1039.

Full text

Abstract:

The influence of structural size and geometry on the electronic states, optical transitions and nonlinear optical response in semiconductor quantum wells and dots has been investigated. A quantum mechanical theory of optical nonlinearities in semiconductors has been used in conjunction with the empirical pseudopotential band structure method to determine the structural parameters leading to optimum second harmonic generation in p-type asymmetric GaAs/AlxGa₁₋xAs quantum well structures. Maximum confinement of all participating states is of paramount importance for optimising such responses. The

APA, Harvard, Vancouver, ISO, and other styles

42

Vasheghani, Farahani Sepehr. "Optical and electronic properties of defects and dopants in oxide semiconductors." Thesis, University of Warwick, 2013. http://wrap.warwick.ac.uk/58463/.

Full text

Abstract:

Interest in semiconductor materials has continually grown over the past 60 years due to their potential use in electronic and optoelectronic device structures. Oxide semiconductors are a particular class of materials that also combine conductivity with optical transparency, properties not usually found in the same material. These transparent conducting oxides (TCOs) have been among the first oxide materials to benefit from the availability of improved epitaxial growth techniques, although perovskite oxides and heterostructures have also proved to be opening a new era of high mobility structure

APA, Harvard, Vancouver, ISO, and other styles

43

Biggs, Jason Daniel 1978. "Theoretical studies of the external vibrational control of electronic excitation transfer and its observation using polarization- and optical phase-sensitive ultrafast spectroscopy." Thesis, University of Oregon, 2010. http://hdl.handle.net/1794/11074.

Full text

Abstract:

xvi, 218 p. : ill. (some col.)<br>Our theoretical studies involve the control of electronic energy transfer in molecular dimers through the preparation of specific vibrational coherences prior to electronic excitation. Our control strategy is based upon the fact that, following impulsive electronic excitation, nuclear motion acts to change the instantaneous energy difference between site-excited electronic states and thereby influences short-time electronic excitation transfer (EET). By inducing coherent intramolecular vibration in one of the chromophores prior to short-pulse electronic excita

APA, Harvard, Vancouver, ISO, and other styles

44

Lovering, David James. "Time resolved optical spectroscopy of electronic states in GaAs quantum wells." Thesis, University of Exeter, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305754.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Haines, Miles J. L. S. "Optical phonons and the electronic magneto density of states of heteroepitaxial semiconductors." Thesis, Heriot-Watt University, 1990. http://hdl.handle.net/10399/905.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Armstrong, Albert R. "Electronic and Geometric Structure of AlnOm and AlnOm +." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5889.

Full text

Abstract:

Generally, the electronic stability of aluminum clusters is associated with either closed electronic shells of delocalized electrons, or aluminum in the +3 state. To explore alternative routes for electronic stability in aluminum oxide clusters, theoretical methods were used to examine the geometric and electronic structure of AlnOm (2≤n≤7; 1≤m≤10) clusters. Two types of electronically stable clusters with large HOMO-LUMO gaps were identified the first being Al2nO3m clusters with a +3 oxidation state on the aluminum, and the second being planar clusters such as Al4O4, Al5O3, Al6O4, and Al6O5.

APA, Harvard, Vancouver, ISO, and other styles

47

Swanlund, John M. "ELECTRONIC STRUCTURE OF CATHODE MATERIALS IN LITHIUM ION BATTERIES." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5851.

Full text

Abstract:

Lithium ion batteries are ubiquitous in modern life, from powering hand-held electronic devices to electric vehicles. And with the necessary drive toward renewable energy sources like solar and wind, electricity storage for the grid promises to drive up the demand for higher performing, less expensive, safer, and more environmentally friendly secondary batteries. Recent research has theorized that replacing halogens in batteries’ electrolytes with non-halogens can yield desirable performance characteristics while eliminating the most dangerous and problematic chemicals. This thesis explores th

APA, Harvard, Vancouver, ISO, and other styles

48

Derrick, Timothy James. "Electronic and optical properties of conjugated oligomers and polymers." Thesis, London South Bank University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367900.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Amezcua-Correa, Adrian. "Deposition of electronic and plasmonic materials inside microstructured optical fibres." Thesis, University of Southampton, 2007. https://eprints.soton.ac.uk/50201/.

Full text

Abstract:

Optical fibres are the transport medium of today's digital information. Nowadays, modern optical telecommunication systems make use of semiconductor optoelectronic devices to generate, control and detect light. The union of the two technologies, namely fibre photonics and semiconductor electronics is expected to have a major impact on next generation of optoelectronic devices, exploiting both the guiding capabilities of optical fibres and the signal processing properties of semiconductors devices. Only recently, with the advent of microstructured optical fibres and templating material processi

APA, Harvard, Vancouver, ISO, and other styles

50

Nedzinskas, Ramūnas. "Epitaksinių InGaAs kvantinių taškų darinių moduliuoto atspindžio ir fotoliuminescencijos spektroskopija." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20121001_093259-68855.

Full text

Abstract:

Saviformuojantys puslaidininkiniai kvantiniai taškai (quantum dots, QDs), kurių charakteringos elektronų subjuostinių (intraband) šuolių energijos yra infraraudonajame spektriniame ruože (3–25 μm), sudaro daugelio fotojutiklių aktyviąją terpę ir yra aktualūs taikymams šiuolaikinėje optoelektronikoje. Disertacijoje nagrinėjami molekulinio pluoštelio epitaksijos būdu užauginti: -- InAs kvantiniai taškai, įterpti į GaAs matricą ir GaAs/AlAs supergardelę; -- InAs kvantiniai taškai be ir su įtempimus sumažinančiuoju InGaAs sluoksniu, įterpti į kompozitinę GaAs/AlAs kvantinę duobę; -- skirtingo aukš

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!