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Tesis sobre el tema "Molecular Photonics"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 26 de julio de 2025

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1

Gray, David. "Molecular organic photonics." Thesis, Durham University, 1994. http://etheses.dur.ac.uk/5593/.

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The work presented in this thesis is derived from experimentation in the field of molecular organic photonics. This is done from the standpoint that devices cannot be understood without recourse to the molecular properties and vice versa. A background of nonlinear optics and a brief introduction to the origins of molecular organic nonlinearity is given to aid understanding of the main points of the argument. The dipole moment of several organics was calculated using a simple capacitance method which has been successfully applied to reactive species. These dipole moment results were necessary i

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2

Keogh, Gary Peter. "The application of coherent Raman scattering to molecular photonics." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243375.

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3

McKee, Erik. "Femtosecond Filament Interaction as a Probe for Molecular Alignment." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5991.

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Femtosecond laser filamentation is a highly nonlinear propagation mode. When a laser pulse propagates with a peak power exceeding a critical value Pcr (5 GW at 800 nm in air), the Kerr effect tends to collapse the beam until the intensity is high enough to ionize the medium, giving rise to plasma defocusing. A dynamic competition between these two effects takes place leaving a thin and weakly ionized plasma channel in the trail of the pulse. When an ultrafast laser pulse interacts with molecules, it will align them, spinning them about their axis of polarization. As the quantum rotational wav

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4

Liu, Yuan. "Development of laser spectroscopy for elemental and molecular analysis." Doctoral diss., University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5978.

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Laser-Induced Breakdown Spectroscopy (LIBS) and Raman spectroscopy are still growing analytical and sensing spectroscopic techniques. They significantly reduce the time and labor cost in analysis with simplified instrumentation, and lead to minimal or no sample damage. In this dissertation, fundamental studies to improve LIBS analytical performance were performed and its fusion with Raman into one single sensor was explored. On the fundamental side, Thomson scattering was reported for the first time to simultaneously measure the electron density and temperature of laser plasmas from a solid al

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5

Jemli, Khaoula. "Synthése et auto-assemblage de molécules de pérovskite pour la photonique et le marquage." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLN009/document.

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Cette thèse s’inscrit dans la conjoncture actuelle de la recherche et du développement des matériaux pour les énergies renouvelables et dispositifs optoélectroniques à bas coût. Nous avons développées des nouveaux matériaux de pérovskites 2D et 3D afin d’exploiter leurs propriétés originales dans le but de les intégrer dans un second temps dans des dispositifs photoniques et photovoltaïques. Le travail d’ingénierie moléculaire sur la flexibilité des pérovskites 2D a permis de moduler le gap optique, d’extraire des informations sur les propriétés excitonique ainsi que l’activation de la photolu

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6

McDougall, Craig. "Advanced photonic methodologies for the 'in vitro' manipulation of cellular systems." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/1876.

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This thesis investigates the application of a variety of optical techniques for the manipulation of single cells and their local micro-environment. The methodologies developed provide enhanced control over a single cell under study affording exquisite spatial and temporal control over biological processes of interest. The work presented within the thesis can be split into three distinct categories. The first of these provides an investigation in light activated “caged” molecular probes. This work generated several new compounds which were then applied to providing control over processes involv

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7

Zandbergen, Sander, and Sander Zandbergen. "Light-Matter Interactions in Various Semiconductor Systems." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/624528.

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Semiconductors provide an interesting platform for studying light-matter interactions due to their unique electrically conductive behavior which can be deliberately altered in useful ways with the controlled introduction of confinement and doping, which changes the electronic band structure. This area of research has led to many important fundamental scientific discoveries that have in turn spawned a plethora of applications in areas such as photonics, microscopy, single-photon sources, and metamaterials. Silicon is the prevalent semiconductor platform for microelectronics because of its cost

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8

Beaudoin, Bertrand Julien. "Homodyne High-harmonic Spectroscopy: Coherent Imaging of a Unimolecular Chemical Reaction." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23173.

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At the heart of high harmonic generation lies a combination of optical and collision physics entwined by a strong laser field. An electron, initially tunnel-ionized by the field, driven away then back in the continuum, finally recombines back to rest in its initial ground state via a radiative transition. The emitted attosecond (atto=10^-18) XUV light pulse carries all the information (polarization, amplitude and phase) about the photorecombination continuum-to-ground transition dipolar field. Photorecombination is related to the time-reversed photoionization process. In this perspective, hi

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9

Konrad, Alexander [Verfasser], and Alfred J. [Akademischer Betreuer] Meixner. "Nano-photonics on luminescent molecular systems and metal particles in optical sub-wavelength microresonators / Alexander Konrad ; Betreuer: Alfred J. Meixner." Tübingen : Universitätsbibliothek Tübingen, 2016. http://d-nb.info/1198122153/34.

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10

Clavel, Michael Brian. "Tensile-Strained Ge/InₓGa₁₋ₓAs Heterostructures for Electronic and Photonic Applications". Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/78129.

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The continued scaling of feature size in silicon (Si)-based complimentary metal-oxide-semiconductor (CMOS) technology has led to a rapid increase in compute power. Resulting from increases in device densities and advances in materials and transistor design, integrated circuit (IC) performance has continued to improve while operational power (VDD) has been substantially reduced. However, as feature sizes approach the atomic length scale, fundamental limitations in switching characteristics (such as subthreshold slope, SS, and OFF-state power dissipation) pose key technical challenges moving for

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11

Ruiz, Tórtola Ángela. "Desarrollo de biosensores nanofotónicos de alta sensibilidad para la detección de biomarcadores microRNA en aplicaciones de diagnóstico médico." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/172631.

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[ES] El interés en desarrollar biosensores de alta sensibilidad para identificar y cuantificar una amplia gama de moléculas ha aumentado notablemente durante las últimas décadas en numerosos campos de aplicación. Entre ellos probablemente el más demandado sea el diagnóstico médico, el cual ha sido impulsado por el descubrimiento de nuevos biomarcadores de enfermedades, tales como los miRNAs. No obstante, la mayoría de las técnicas existentes para realizar la detección requieren el uso de marcadores debido a la falta de sensibilidad para detectar analitos en bajas concentraciones. Las estructur

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12

Omasta, Lukáš. "Příprava a charakterizace tenkých vrstev nízkomolekulárních materiálů pro organickou fotoniku." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2013. http://www.nusl.cz/ntk/nusl-216943.

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This diploma thesis is focused on characterization of properties of new organic materials with respect to its potential application in organic photonics. The theoretical part contains a themed literature research on low molecular thin films for organic photonics, mainly phthalocyanines together with description and structure of the photovoltaic energy conversion. The practical part includes the preparation of thin layers of selected organic materials for organic photonics. Prepared thin films were characterized by optical methods and current voltage characteristics. Based on these results, the

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13

Wang, Yanhua. "Theoretical Design of Molecular Photonic Materials." Doctoral thesis, Stockholm: Bioteknologi, Kungliga Tekniska högskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4333.

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14

Kuczynski, Andrzej Piotr. "Zwitterionic materials for photonic applications." Thesis, Cranfield University, 1992. http://dspace.lib.cranfield.ac.uk/handle/1826/10405.

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A series of zwitterionic materials of general formula R-D*-CH=C(CN)- CÖH4-C(CN)2', where D* is a pyridirium or quinolinium acceptor and R is a hydrophobic alkyl chain or an aryl group, were deposited using the Langmuir- Blodgett (LB) technique and their photochromic and nonlinear optical properties characterised. The materials are highly solvatochromic, exhibiting a broad photochromic charge transfer band in the visible region which bleaches when irradiated. LB films of the zwitterions, Z-ß-(1-hexadecyl-4-pyridinium)-a-cyano-4- styryldicyanomethanide (CMH33-P3CNQ) and the quinolinium analogue,

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15

Sanchez-Adaime, Esteban. "Caractérisation électrique de diodes moléculaires associées à des nano-antennes plasmoniques pour convertir la lumière en électricité." Electronic Thesis or Diss., Aix-Marseille, 2022. http://www.theses.fr/2022AIXM0171.

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La technologie des antennes rectifiantes (rectennas), association d’une antenne pour convertir la lumière en courant alternatif et d’un composant redresseur pour obtenir un courant continu, promet une conversion à haut rendement de la lumière telle que le laissait penser la démonstration de William Brown en 1964 dans le domaine des micro-ondes. Parmi toutes les structures de rectennas développées, nous avons retenu et étudié celle de l’assemblage d’antennes patch colloïdales à base de nanocubes métalliques avec des diodes moléculaires qui jouent aussi le rôle de maintien mécanique des nanocube

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16

Hu, Honghua. "Third Order Nonlinearity of Organic Molecules." Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5310.

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The main goal of this dissertation is to investigate the third-order nonlinearity of organic molecules. This topic contains two aspects: two-photon absorption (2PA) and nonlinear refraction (NLR), which are associated with the imaginary and real part of the third-order nonlinearity (x3) of the material, respectively. With the optical properties tailored through meticulous molecular structure engineering, organic molecules are promising candidates to exhibit large third-order nonlinearities. Both linear (absorption, fluorescence, fluorescence excitation anisotropy) and nonlinear (Z-scan, t

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17

Hurenkamp, Johannes Henricus. "Tuning energy transfer between chromophores switchable molecular photonic systems /." [S.l. : [Groningen : s.n.] ; University Library Groningen] [Host], 2008. http://irs.ub.rug.nl/ppn/.

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18

Neitzke, Oliver Björn. "On the Integration of Single Emitters in Solids and Photonic Nano-Structures." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19119.

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Quantentechnologien sind im Begriff sich von Laborversuchen zu effizienten Anwendungen zu entwickeln. Die Quantenzustände einzelner Photonen spielen dabei die Rolle als Bindeglied zwischen stationären Quantensystemen. Ein hybrider Ansatz wird verfolgt, um die Wechselwirkung gezielt zwischen im Wellenleiter geleiteten Photonen und gekoppelten Quantenemittern zu erreichen. Die Dissertation untersucht zwei zentrale Aspekte solcher hybriden photonischen Quantentechnologien: die effiziente Erzeugung von Photonen und die Optimierung von photonischen Strukturen. Der erste Teil dieser Arbeit behand

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19

Peceli, Davorin. "Absorptive and Refractive Optical Nonlinearities in Organic Molecules and Semiconductors." Doctoral diss., University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5687.

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The main purpose of this dissertation to investigate photophysical properties, third order nonlinearity and free carrier absorption and refraction in organic materials and semiconductors. Special emphasis of this dissertation is on characterization techniques of molecules with enhanced intersystem crossing rate and study of different approaches of increasing triplet quantum yield in organic molecules. Both linear and nonlinear characterization methods are described. Linear spectroscopic characterization includes absorption, fluorescence, quantum yield, anisotropy, and singlet-oxygen generati

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20

Barêa, Luís Alberto Mijam 1982. "Moléculas fotônicas para aplicações em engenharia espectral e processamento de sinais ópticos." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/276994.

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Orientador: Newton Cesário Frateschi<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-08-24T10:26:52Z (GMT). No. of bitstreams: 1 Barea_LuisAlbertoMijam_D.pdf: 8459370 bytes, checksum: 5dd565986711cb06cb24cf63d6d69372 (MD5) Previous issue date: 2014<br>Resumo: Sistemas fotônicos baseados em ressonadores na forma de anéis tem uma dependência fundamental dada pela relação estreita entre espaçamento espectral livre (Free Spectral Range, FSR), fator de qualidade total, Q, e o raio dos ressonadores, R. Nesta tese, nós q

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21

Shirdel, Javid. "Photo-physical characterization of flavin-pyrene-phenothiazine molecular photonic complexes." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=985128062.

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22

Felip, León Carlos. "Molecular Nanoparticles and Gels: Materials for Biomedical and Photonic Applications." Doctoral thesis, Universitat Jaume I, 2018. http://hdl.handle.net/10803/587103.

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The general objective of the present thesis is the study and development of low molecular weight gelators with photonic and biomedical applications. Low molecular weight gelators derived from amino acids containing fluorescent moieties will be synthesized and characterized. The energy transfer process occurring on a stimuli-responsive orthogonal two-component gelator will be studied, paving the way for possible light-harvesting applications. The construction of a smart versatile gel that present aggregation induced emission will be carried out. The aggregation mode showed to have

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23

Fulop, Tiberiu G. "From Electrodeposited InSb to Photonic Crystals and Nanopatterned Molecular Templates." Case Western Reserve University School of Graduate Studies / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=case1089900004.

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24

Sands, Anita Mary. "The ionization and dissociation of selected molecules by VUV photons." Thesis, Queen's University Belfast, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343088.

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25

Kim, Younggu. "Novel organic polymeric and molecular thin-film devices for photonic applications." College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/4164.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2006.<br>Thesis research directed by: Department 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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26

Ford, J. S. "Applied molecular quantum electrodynamics : geometric aspects of the efficiency of photonic interactions." Thesis, University of East Anglia, 2015. https://ueaeprints.uea.ac.uk/59366/.

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This thesis presents applications of molecular quantum electrodynamics (MQED) to the analysis of resonance energy transfer (RET), molecular absorption and emission, and light scattering by molecules. An MQED framework describes such processes as a series of microscopic photonic interaction events. Multi-interaction processes entail intermediate states of the system’s evolution remaining unspecified, requiring careful interpretation. RET, as modified by coupling with the nearest molecule of the surrounding refractive medium, is investigated. Special attention is given to a system geometry where

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27

Jannasch, Anita. "High performance photonic probes and applications of optical tweezers to molecular motors." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-103696.

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Optical tweezers are a sensitive position and force transducer widely employed in physics and biology. In a focussed laser, forces due to radiation pressure enable to trap and manipulate small dielectric particles used as probes for various experiments. For sensitive biophysical measurements, microspheres are often used as a handle for the molecule of interest. The force range of optical traps well covers the piconewton forces generated by individual biomolecules such as kinesin molecular motors. However, cellular processes are often driven by ensembles of molecular machines generating forces

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28

Gray, Tomoko O. "Exploitation of molecular mobilities for advanced organic optoelectronic and photonic nano-materials /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/9908.

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29

Stewart, Beverly. "Computational chemistry applied to the excited state decay of molecular photonic devices." Thesis, University of Newcastle Upon Tyne, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538922.

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30

Rappe, Andrew Marshall. "AB initio theoretical studies of transition-metal, molecular, and photonic band-gap materials." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/29861.

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31

Bradley, Thomas David. "Atomic vapours filled hollow core photonic crystal fibre for magneto-optical spectroscopy." Thesis, University of Bath, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616871.

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This thesis describes developments in atomic vapour loading in hollow core photonic crystal fibre (HC-PCF) for fabrication of atomic vapour loaded photonic microcells (PMC). These developments have been targeted at addressing some of the issues associated with loading atomic vapours in confined waveguiding geometries such as increased dephasing and physio-chemical wall absorptions. Atomic vapour loaded HC-PCF and PMC’s have applications in laser metrology, coherent optics and magneto optical spectroscopy. State of the art HC-PCF have been fabricated for loading with atomic vapour including bot

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32

Beyer, Griffin Joseph. "Large Area 2D Electronic Molecular Sensor Arrays via Photonic Annealing of Amorphous Sputtered Mos2." University of Dayton / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1582624657416084.

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33

Cognee, Kevin. "Hybridization of open photonic resonators." Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0002.

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Le contrôle de l'interaction entre la lumière et la matière est d'une importance capitale dans de nombreuses technologies modernes, avec des applications allant de la détection, aux télécommunications et à l'information quantique. Les résonateurs nanophotoniques permettent d'améliorer cette interaction par le confinement et le stockage du champ lumineux.Cette thèse étudie l'hybridation des modes propres des nano et microrésonateurs, et en particulier les propriétés de résonateurs hybrides composés d'une cavité diélectrique et de nanoantennes plasmoniques. Les résonateurs photoniques présentent

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34

Jones, Andrew Michael. "Realizing a mid-infrared optically pumped molecular gas laser inside hollow-core photonic crystal fiber." Diss., Kansas State University, 2012. http://hdl.handle.net/2097/13775.

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Doctor of Philosophy<br>Department of Physics<br>Kristan L. Corwin<br>This research has focused on the development, demonstration, and characterization of a new type of laser based on optically-pumped gases contained within hollow optical fibers. These novel lasers are appealing for a variety of applications including frequency metrology in the mid-infrared, free-space communications and imaging, and defense applications. Furthermore, because of the hollow core fibers used, this technology may provide the means to surpass the theoretical limits of output power available from high power solid-

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35

Flynn, John J. "Optimizing the Discovery and Processability of Biologically Derived Molecular Glass Host Materials for Photonic Applications." University of Dayton / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1588192751503223.

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36

Marie, Héléne. "Elaboration of a new sensor based on molecularly imprinted polymers for the detection of molecules in physiological fluids." Phd thesis, Université de Technologie de Compiègne, 2013. http://tel.archives-ouvertes.fr/tel-00977390.

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This thesis aimed at elaborating an optical sensor to detect molecules in a biological fluid. Two steroids and a xenobiotic were identified as biomarkers released in some body fluids: cyproterone acetate, cortisol and 2,4-dichlorophenoxyacetic acid respectively. On one hand, detection was performed by Molecularly Imprinted Polymers (MIPs). These tailor-made synthetic receptors display numerous qualities that foster their integration in sensors. MIPs were therefore developed against the targeted analytes. Formulation optimization was led thanks to experimental designs. On the other hand, optica

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37

McBride, Patrick M. "The Effect of Polarization and InGaN Quantum Well Shape in Multiple Quantum Well Light Emitting Diode Heterostructures." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/822.

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Previous research in InGaN/GaN light emitting diodes (LEDs) employing semi-classical drift-diffusion models has used reduced polarization constants without much physical explanantion. This paper investigates possible physical explanations for this effective polarization reduction in InGaN LEDs through the use of the simulation software SiLENSe. One major problem of current LED simulations is the assumption of perfectly discrete transitions between the quantum well (QW) and blocking layers when experiments have shown this to not be the case. The In concentration profile within InGaN multiple qu

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38

Brown, M. D. "Light harvesting and photoconversion efficiency enhancement in dye-sensitized solar cells via molecular and photonic advancements." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:651f8967-5d8b-42aa-bee1-04e0bbc04cea.

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The main goal of this thesis is to investigate and develop the physics of dye-based photovoltaic physics through molecular and photonic routes. Numerous photovoltaics devices have been fabricated through the course of this work to study their characteristics, performance, physical composition and action. The relative youth of the field of dye-based optoelectronics provides extensive scope for new research which provides fascinating opportunities in terms of physical processes.This thesis is divided into two main projects; exploring the adaption of conventional dye-sensitized solar cells via st

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39

Wheeler, Natalie. "Molecular and atomic confinement in large core photonic microcells for slow light and laser metrology applications." Thesis, University of Bath, 2010. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538142.

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This thesis describes developments in the fabrication and applications of photonic microcells (PMCs). A PMC is a length of gas-filled hollow core-photonic crystal fibre (HC-PCF) that is hermetically sealed by splicing both ends to standard single mode fibre. A PMC enables integration of gas-filled HC-PCF into all-fibre systems with low insertion loss. PMCs have applications in coherent optics and metrology, where specific HC-PCF designs are advantageous. Two types of state-of-the-art HC-PCF, double bandgap HCPCF and large-pitch Kagome fibre, are fabricated. The double bandgap HC-PCF extends th

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40

Torres, Díaz Daniela. "Non-thermal desorption from model molecular ices - towards quantitative astrochemical data." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASF068.

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Cette thèse présente une étude expérimentale de la désorption non thermique de solides moléculaires physisorbés appelés glaces. La désorption non thermique est cruciale pour expliquer les abondances moléculaires en phase gaz observées dans divers environnements astrophysiques. Ce travail vise à mieux identifier les mécanismes directs et indirects de désorption induite par les photons UV et X et en contraindre les efficacités. Il implique donc l'étude de la désorption induite par les électrons. Sous irradiation UV, des électrons de basse énergie sont créés au sein de la glace par ionisation en

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41

Chamanzar, Maysamreza. "Hybrid nanoplasmonic-nanophotonic devices for on-chip biochemical sensing and spectroscopy." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/50145.

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Hybrid plasmonic-photonic structures were introduced as novel platforms for on-chip biochemical sensing and spectroscopy. By appropriate coupling of photonic and plasmonic modes, a hybrid architecture was realized that can benefit from the advantages of integrated photonics such as the low propagation loss, ultra-high Q modes, and robustness, as well as the advantages of nanoplasmonics such as extreme light localization, large sensitivities, and ultra-high field enhancements to bring about unique performance advantages for efficient on-chip sensing. These structures are highly sensitive and ca

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42

Mastrodonato, Cristiano Matteo. "Elaboration of fluorescent molecular probes and molecular-based nanoparticles for bioimaging purposes." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0652/document.

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Les techniques de fluorescence sont des outils de choix pour l’étude et la compréhension fine des processus biologiques. Ceci requiert toutefois l’utilisation de sondes fluorescentes parfaitement adaptées au but visé et répondant aux différentes exigences requises pour l’application visée. Dans ce cadre, nous nous sommes plus particulièrement intéressés à l’élaboration de sondes biphotoniques de pH adaptées à une mesure très sensible de faibles variations de pH autour du pH neutre. Les variations et gradients de pH sont en effet impliqués dans un certain nombre de processus biologiques importa

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43

Bernard, Alice. "Towards an electrically-injected optical parametric oscillator." Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC104/document.

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Le travail présenté dans cette thèse porte sur la conception, la fabrication et la caractérisation de sources prévues pour fonctionner à la fois comme diode laser et comme oscillateur paramétrique optique. Ces lasers sont conçus pour émettre sur un mode d’ordre supérieur afin de permettre une conversion de fréquence paramétrique avec les modes fondamentaux du guide à la fréquence moitié. La diode laser et l’OPO partagent la même cavité optique ; pour assurer l’accord de phase et corriger les écarts à la structure nominale induits lors de l’élaboration par épitaxie, la largeur de ruban est util

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Paruli, Ernesto III. "Direct writing of micro and nanostructures via two-photon stereolithography for the design of molecularly imprinted polymer-based sensing elements." Thesis, Compiègne, 2021. http://www.theses.fr/2021COMP2629.

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Les polymères à empreinte moléculaire (MIPs) sont des récepteurs synthétiques d’excellente affinité et sélectivité pour leurs cibles à l’instar des anticorps, leurs permettant de trouver des applications en détection chimique, bioimagerie, catalyse, etc. En tant que polymères, les MIPs peuvent être synthétisés en divers formats pour mieux s’adapter à leurs applications. Dans cette thèse, nous explorons l’emploi de la stéréolithographie à deux photons (TPS) pour la structuration arbitraire et précise des MIPs à travers la manipulation de lumière dans l’espace 3D d’un matériau polymérisable, con

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45

Gurke, Johannes. "Protons and Photons." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/19747.

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Gegenstand dieser Arbeit ist die Frage wie thermische und photochemische Gleichgewichte verbunden werden können und sich gegenseitig beeinflussen. Dazu wurden zwei Projekte bearbeitet, zum einen das Konzept der „säure-katalysierten Zykloreversion“ und zum anderen das Konzept der „licht-induzierten pKs Veränderung“. Im ersten Konzepte wurde eine extern steuerbare, thermische Rückreaktion genutzt, um die Zusammensetzung im photostationären Zustand zu kontrollieren. Durch Zugabe von katalytischen Mengen einer starken Säure wurde die Ringöffnung eines Diarylethens, welches mit einem Flurenol subst

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Ngo, Ndimba Alphonsine L. "Photoactive molecular assemblies for optical limiting and bio-imaging." Thesis, Rennes 1, 2020. http://www.theses.fr/2020REN1S103.

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Dans cette thèse, nous ciblons de nouveaux absorbeurs biphotoniques pour la bio-imagerie et la limitation optique. Nous nous sommes intéressés plus précisément à des octupôles, structures connues pour posséder des propriétés intéressantes en optique non-linéaire et plus particulièrement en absorption à deux photons. Ainsi, les cœurs isocyanurate et 1,3,5-triazine, connus comme étant des accepteurs, mènent à des octupôles bidimensionnels lorsqu’ils sont substitués de façon symétrique. Pour lors, les isocyanurates ont été peu étudiés pour l’optique non linéaire tandis que les triazines ont déjà

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47

Jackson, Gavin John. "Local adsorption structure determination of chemically-specific species using normal incidence X-ray standing wavefields." Thesis, University of Warwick, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343835.

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Le, Liepvre Sylvain. "Supramolecular self-assemblies for plasmonics : a bottom-up approach to efficient photonic nanodevices." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS330/document.

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Dans cette thèse, nous avons étudié les propriétés photoniques et vibrationnelles de monocouches moléculaires auto-assemblées sur graphène et la possibilité d'utiliser des multicouches auto-assemblées de pérylène comme milieu à gain pour l'amplification de plasmons. Le graphène, en tant que matériau transparent et conducteur, a permis pour la première fois de corréler la géométrie du réseau de l’auto-assemblage supramoléculaire avec ses propriétés optiques, grâce à la microscopie à effet tunnel et à des mesures de spectroscopiques optiques et Raman. En comparant plusieurs colorants autoassembl

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Leung, Calvin. "Quantum Foundations with Astronomical Photons." Scholarship @ Claremont, 2017. http://scholarship.claremont.edu/hmc_theses/98.

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Theoretical work in quantum information has demonstrated that a classical hidden-variable model of an entangled singlet state can explain nonclassical correlations observed in tests of Bell’s inequality if while measuring the Bell correlation, the underlying probability distribution of the hidden-variable changes depending on the measurement basis. To rule out this possibility, distant quasars can be utilized as random number generators to set measurement bases in an experimental test of Bell’s inequality. Here we report on the design and characterization of a device that uses the color of inc

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Rezai, Mohammad [Verfasser]. "Quantum Information Processing with Photons from a Single Molecule / Mohammad Rezai." München : Verlag Dr. Hut, 2018. http://d-nb.info/1172582009/34.

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