Contribution A La Realisation De Fonctions Optiques A Base De Cristaux Photoniques Sur Linbo3

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Contribution à la réalisation de fonctions optiques à base de cristaux photoniques sur LiNbO3

Author : Sandrine Massy
Publisher :
ISBN 13 :
Total Pages : 352 pages
Book Rating : 4.:/5 (799 download)

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Book Synopsis Contribution à la réalisation de fonctions optiques à base de cristaux photoniques sur LiNbO3 by : Sandrine Massy

Download or read book Contribution à la réalisation de fonctions optiques à base de cristaux photoniques sur LiNbO3 written by Sandrine Massy and published by . This book was released on 2004 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette étude démontre la faisabilité de composants dédiés aux télécommunications optiques par gravure d'une structure à Bande Interdite Photonique (BIP) bidimensionnelle dans le niobate de lithium avec guide protonique. Un bombardement électronique, issu d'un Microscope Electronique à Balayage (MEB), associé à une attaque chimique permet d'obtenir des réseaux de tiges ou de trous dans le matériau. Le processus physique à la base de la création des tiges est l'inversion des domaines ferroélectriques du cristal. L'influence des paramètres expérimentaux de preparation et d'irradiation de l'échantillon est étudiée. Des tiges et des trous de, respectivement, 1 æm et 400 nm de diamètre sont obtenus. Des simulations ont permis de déterminer les dimensions du réseau nécessaires à l'obtention d'un filtre à ? = 1,55 æm. La structure ainsi réalisée expérimentalement et caractérisée optiquement montre un comportement sélectif en longueur d'onde autour de 1,55 æm

Quantum Communications and Cryptography

Author : Alexander V. Sergienko
Publisher : CRC Press
ISBN 13 : 1420026607
Total Pages : 248 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Quantum Communications and Cryptography by : Alexander V. Sergienko

Download or read book Quantum Communications and Cryptography written by Alexander V. Sergienko and published by CRC Press. This book was released on 2018-10-03 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: All current methods of secure communication such as public-key cryptography can eventually be broken by faster computing. At the interface of physics and computer science lies a powerful solution for secure communications: quantum cryptography. Because eavesdropping changes the physical nature of the information, users in a quantum exchange can easily detect eavesdroppers. This allows for totally secure random key distribution, a central requirement for use of the one-time pad. Since the one-time pad is theoretically proven to be undecipherable, quantum cryptography is the key to perfect secrecy. Quantum Communications and Cryptography is the first comprehensive review of the past, present, and potential developments in this dynamic field. Leading expert contributors from around the world discuss the scientific foundations, experimental and theoretical developments, and cutting-edge technical and engineering advances in quantum communications and cryptography. The book describes the engineering principles and practical implementations in a real-world metropolitan network as well as physical principles and experimental results of such technologies as entanglement swapping and quantum teleportation. It also offers the first detailed treatment of quantum information processing with continuous variables. Technologies include both free-space and fiber-based communications systems along with the necessary protocols and information processing approaches. Bridging the gap between physics and engineering, Quantum Communications and Cryptography supplies a springboard for further developments and breakthroughs in this rapidly growing area.

Experimental Chaos

Author : Stefano Boccaletti
Publisher : A I P Press
ISBN 13 :
Total Pages : 384 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Experimental Chaos by : Stefano Boccaletti

Download or read book Experimental Chaos written by Stefano Boccaletti and published by A I P Press. This book was released on 2004-12-14 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 8th Experimental Chaos Conference again demonstrated the broad spectrum of areas where nonlinear dynamics plays an important role, such as circuits, hydrodynamics, optics, chemistry, fracture dynamics, neuroscience, and cognitive science. Additional contributions outline the trends for development and application of concepts and techniques of nonlinear dynamics.

Flexoelectricity in Liquid Crystals

Author : Agnes Buka
Publisher : World Scientific
ISBN 13 : 1848167997
Total Pages : 299 pages
Book Rating : 4.8/5 (481 download)

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Book Synopsis Flexoelectricity in Liquid Crystals by : Agnes Buka

Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.

Organic Solid-State Lasers

Author : Sébastien Forget
Publisher : Springer
ISBN 13 : 3642367054
Total Pages : 179 pages
Book Rating : 4.6/5 (423 download)

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Book Synopsis Organic Solid-State Lasers by : Sébastien Forget

Download or read book Organic Solid-State Lasers written by Sébastien Forget and published by Springer. This book was released on 2013-07-03 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic lasers are broadly tunable coherent sources, potentially compact, convenient and manufactured at low-costs. Appeared in the mid 60’s as solid-state alternatives for liquid dye lasers, they recently gained a new dimension after the demonstration of organic semiconductor lasers in the 90's. More recently, new perspectives appeared at the nanoscale, with organic polariton and surface plasmon lasers. After a brief reminder to laser physics, a first chapter exposes what makes organic solid-state organic lasers specific. The laser architectures used in organic lasers are then reviewed, with a state-of-the-art review of the performances of devices with regard to output power, threshold, lifetime, beam quality etc. A survey of the recent trends in the field is given, highlighting the latest developments with a special focus on the challenges remaining for achieving direct electrical pumping of organic semiconductor lasers. A last chapter covers the applications of organic solid-state lasers.

Clay-containing Polymeric Nanocomposites

Author : L. A. Utracki
Publisher : iSmithers Rapra Publishing
ISBN 13 : 9781859574379
Total Pages : 464 pages
Book Rating : 4.5/5 (743 download)

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Book Synopsis Clay-containing Polymeric Nanocomposites by : L. A. Utracki

Download or read book Clay-containing Polymeric Nanocomposites written by L. A. Utracki and published by iSmithers Rapra Publishing. This book was released on 2004 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is Part 1 of a two-part set. Part 2 ISBN is 1859574823

Alternative Fuels

Author : Michael F. Hordeski
Publisher : The Fairmont Press, Inc.
ISBN 13 : 0881735965
Total Pages : 297 pages
Book Rating : 4.8/5 (817 download)

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Book Synopsis Alternative Fuels by : Michael F. Hordeski

Download or read book Alternative Fuels written by Michael F. Hordeski and published by The Fairmont Press, Inc.. This book was released on 2008 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Newly revised, the second edition of this pioneering work addresses emerging factors affecting energy production and use, including the availability and desirability of various fuels. The text provides extensive discussion on hydrogen sources, both solar and nuclear, and fuel cell technology, as well as other alternative fuels such as biomass, and wind power. It delves into cost analysis, regulatory issues, barriers to implementation, conversion and storage systems, thermodynamic efficiency, fuel chain efficiency, air emission issues, and safety. The book also covers natural gas hydrogen gas, methanol, ethanol, and steam reforming."--pub. desc.

Laser: 50 Years Of Discoveries

Author : Fabien Bretenaker
Publisher : World Scientific
ISBN 13 : 9814612421
Total Pages : 185 pages
Book Rating : 4.8/5 (146 download)

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Book Synopsis Laser: 50 Years Of Discoveries by : Fabien Bretenaker

Download or read book Laser: 50 Years Of Discoveries written by Fabien Bretenaker and published by World Scientific. This book was released on 2014-10-27 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique book provides an overview of the principle and applications of lasers enriched with numerous illustrations.Being over fifty years old, lasers continue to amaze us. Their performance characteristics are constantly reaching new limits, and the scope of their applications continues to expand. Yet, it took years of effort by teams of physicists to transform the fundamental notions of Einstein into the first experimental beam of laser light. And history is still going on as fundamental research is now triggered by its remarkable properties.This book addresses every aspects of laser light, from its fundamental principles to its industrial applications, at a level particularly suited for high school teachers, students, and anybody curious about science and technology.

Making the Most of Your Presentation

Author :
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Making the Most of Your Presentation by :

Download or read book Making the Most of Your Presentation written by and published by . This book was released on 2000 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Nonlinear Optical Materials

Author : Jerome V. Moloney
Publisher : Springer Science & Business Media
ISBN 13 : 9780387985817
Total Pages : 270 pages
Book Rating : 4.9/5 (858 download)

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Book Synopsis Nonlinear Optical Materials by : Jerome V. Moloney

Download or read book Nonlinear Optical Materials written by Jerome V. Moloney and published by Springer Science & Business Media. This book was released on 1998-08-13 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical methods play a significant role in the rapidly growing field of nonlinear optical materials. This volume discusses a number of successful or promising contributions. The overall theme of this volume is twofold: (1) the challenges faced in computing and optimizing nonlinear optical material properties; and (2) the exploitation of these properties in important areas of application. These include the design of optical amplifiers and lasers, as well as novel optical switches. Research topics in this volume include how to exploit the magnetooptic effect, how to work with the nonlinear optical response of materials, how to predict laser-induced breakdown in efficient optical devices, and how to handle electron cloud distortion in femtosecond processes.

Physical Properties of Amorphous Materials

Author : David Adler
Publisher : Springer Science & Business Media
ISBN 13 : 1489922601
Total Pages : 448 pages
Book Rating : 4.4/5 (899 download)

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Book Synopsis Physical Properties of Amorphous Materials by : David Adler

Download or read book Physical Properties of Amorphous Materials written by David Adler and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Institute for Amorphous Studies was founded in 1982 as the international center for the investigation of amorphous mate rials. It has since played an important role in promoting the und er standing of disordered matter in general. An Institute lecture series on "Fundamentals of Amorphous Materials and Devices" was held during 1982-83 with distinguished speakers from universities and industry. These events were free and open to the public ,and were attended by many representatives of the scientific community. The lectures themselves were highly successful inasmuch as they provided not only formal instruction but also an opportunity for vigorous and stimulating debate. That last element could not be captured within the pages of a book I but the lectures concentrated on the latest advances in the field I which is why their essential contents are he re reproduced in collective form. Together they constitute an interdisciplinary status report of the field. The speakers brought many different viewpoints and a variety of back ground experiences io bear on the problems involved I but though language and conventions vary I the essential unity of the concerns is very clear I as indeed are the ultimate benefits of the many-sided approach.

Engineered Materials and Metamaterials

Author : Richard A. Dudley
Publisher : SPIE-International Society for Optical Engineering
ISBN 13 : 9781510602151
Total Pages : pages
Book Rating : 4.6/5 (21 download)

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Book Synopsis Engineered Materials and Metamaterials by : Richard A. Dudley

Download or read book Engineered Materials and Metamaterials written by Richard A. Dudley and published by SPIE-International Society for Optical Engineering. This book was released on 2016-06-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The field of metamaterials arose from a deeper understanding of how electromagnetic waves interact with materials and subwavelength-scaled scattering structures. This opened up the field of metamaterials or engineered materials through advances in understanding how material properties not found in nature could be designed along with advances in fabrication capabilities. Metamaterial advances span the electromagnetic spectrum, with examples being more common at lower (e.g., microwave) frequencies. The microwave or x-band regime has proven to be a good testbed for the first generation of metamaterials, but recently we have seen optical and IR metamaterials emerging as well. The exploitation of these more complex material-wave interactions, based on arrangements of subwavelength scale components, has generated a lot of global activity. We can, in principle, engineer material properties to greatly extend those currently available. This tutorial text presents both the usual and unusual electromagnetic properties of materials, focusing especially man-made or engineered metamaterials. After a review of Maxwell's equations and material properties, the idea of resonant meta-atoms and composite media are introduced. The fabrication of metamaterials and the properties of negative index materials are explained. The difficulties associated with reducing the size of meta-atoms for use at optical frequencies are described, and the use of metamaterials for superresolution imaging is presented in some detail"--

Nanostructured Oxide Thin Films Synthesized by Spray Pyrolysis.

Author : Najoua Kamoun-Turki
Publisher :
ISBN 13 : 9781935924241
Total Pages : 290 pages
Book Rating : 4.9/5 (242 download)

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Book Synopsis Nanostructured Oxide Thin Films Synthesized by Spray Pyrolysis. by : Najoua Kamoun-Turki

Download or read book Nanostructured Oxide Thin Films Synthesized by Spray Pyrolysis. written by Najoua Kamoun-Turki and published by . This book was released on 2018-03 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the spray pyrolysis technique that is used to produce thin films of metallic oxides on glass substrates. Also discussed are the process variables of the spray pyrolysis process used to manufacture specific structures such as nanostructured thin films.

The Properties of Optical Glass

Author : Hans Bach
Publisher : Springer Science & Business Media
ISBN 13 : 3642577695
Total Pages : 430 pages
Book Rating : 4.6/5 (425 download)

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Book Synopsis The Properties of Optical Glass by : Hans Bach

Download or read book The Properties of Optical Glass written by Hans Bach and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the reviews: "The book should be acquired by all libraries with an interest in glass science and applications...the title will endure for many years as the standard work on the properties of optical glass." Optical Systems Engineering

Handbook of Organic Electronics and Photonics: Electronic materials and devices

Author : Hari Singh Nalwa
Publisher :
ISBN 13 : 9781588830968
Total Pages : 1585 pages
Book Rating : 4.8/5 (39 download)

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Book Synopsis Handbook of Organic Electronics and Photonics: Electronic materials and devices by : Hari Singh Nalwa

Download or read book Handbook of Organic Electronics and Photonics: Electronic materials and devices written by Hari Singh Nalwa and published by . This book was released on 2008-01-01 with total page 1585 pages. Available in PDF, EPUB and Kindle. Book excerpt: According to Nalwa (founder and editor-in-chief of the Journal of Nanoscience and Nanotechnology), organic materials and polymers offer a range of advantages in electronic and photonic applications, including a higher degree of tailoring and versatility in the manipulation of their physical properties, ease of modification and functionalization, ease of processing and fabrication, low-cost mass production, environmental stability, and biocompatibility. He presents a three-volume handbook covering the synthesis and electrical properties of these materials, as well as a range of applications. The first volume, on electronic materials and devices, includes 13 chapters discussing such topics as synthetic approaches to band gap control in conjugated polymeric materials; synthesis, characteristics, and applications of conducting polymer nanotubes, nanowires, and nanocomposites; charge transport and morphology in conjugated polymers; nano/microfabrication techniques for organic electronics and photonics, self-assembled supramolecular structures for organic electronics and photonics; organic thin-film transistor fundamentals and applications; electropolymers for mechtronics and artificial muscles; and biologically inspired large contraction conducting polymer actuators. The second volume switches focus towards photonic materials and devices and includes 12 chapters discussing such topics as organic nonlinear optical crystals and single-crystalline thin films, organic semiconducting thin films, organic random lasers, nonlinear optical properties of organometallic and metalloorganic compounds, nonlinear optical responses and photoinduced electron transfer process in phthalocyanines and related compounds, liquid crystal diffractive optical elements, magnetoresistance and spin effects in organic light-emitting diodes, and photoinduced transfer between electron donors and fullerenes as unique electron acceptors. The final volume is concerned with devices and includes 10 chapters on such topics single-molecule transistors; nanostructured arrays as suitable materials for batteries, sensors, and electrochromic devices; organic field-effect transistors; flexible display applications in organic electronics and photonics; physics and technology and organic light emitting diodes; organic and polymeric solar cells; luminescent lanthanide complexes for advanced photonic applications; and DNA based biosensors.

Etude, fabrication et caractérisation de cristaux photoniques à hauts facteurs de forme en niobate de lithium pour la réalisation de modulateurs électro-optiques ultra-compacts

Download Etude, fabrication et caractérisation de cristaux photoniques à hauts facteurs de forme en niobate de lithium pour la réalisation de modulateurs électro-optiques ultra-compacts PDF Online Free

Author : Clement Guyot
Publisher :
ISBN 13 :
Total Pages : 203 pages
Book Rating : 4.:/5 (962 download)

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Book Synopsis Etude, fabrication et caractérisation de cristaux photoniques à hauts facteurs de forme en niobate de lithium pour la réalisation de modulateurs électro-optiques ultra-compacts by : Clement Guyot

Download or read book Etude, fabrication et caractérisation de cristaux photoniques à hauts facteurs de forme en niobate de lithium pour la réalisation de modulateurs électro-optiques ultra-compacts written by Clement Guyot and published by . This book was released on 2015 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse de doctorat a pour but de fabriquer des systèmes électro-optiques compacts en utilisant les propriétés des cristaux photoniques (CP).). Le niobate de lithium (LiNbO3) est très attractif pour les applications optiques (télécommunications optiques, biomédical, astrophysique) car il a de faibles pertes en propagation (0.1 dB/cm ou moins), une faible dispersion en longueur d’onde, une large bande de transparence (350-5000 nm), et des forts coefficients Electro-optiques, non-linéaires et acousto-optiques. Cependant, les composants optiques utilisant ce matériau présentent classiquement un encombrement supérieur au centimètre, ce qui est dommageable pour leur intégration dans des circuits optiques compacts. Nous cherchons à démontrer plus précisément la faisabilité de modulateurs électro-optiques ultra-compacts tout en gardant les performances des modulateurs de type Mach-Zehnder, telles que de faibles pertes d'insertion, une faible tension de commande et un fort taux d'extinction. Nous proposons de remplir ces objectifs par l'usinage de cristaux photoniques à haut facteur de forme sur des guides LiNbO3, en associant découpe à la scie circulaire de précision et gravure par faisceau d'ion focalisé. La configuration s’appuie d’une part sur une tranche fine (ridge) de LiNbO3 qui confine la lumière transversalement, et d’autre part sur l'usinage du CP à haut facteur de forme pour favoriser une forte sensibilité à la présence de champs électriques externes sur des longueurs actives de l'ordre du micromètre. Les hauts facteurs de forme seront obtenus en usinant les ridges sur leur sommet et sur leurs flancs. Un premier enjeu, technologique, est destiné à optimiser les technologies développées à l’institut FEMTO-ST en vue d’applications à l’optique intégrée. Le deuxième enjeu, scientifique, s’agit de mettre en oeuvre une nouvelle configuration de contrôle de la lumière à l’aide d’un cristal photonique, présentant un double usinage sur les flancs et le sommet. C'est la première démonstration expérimentale de nanostructures LiNbO3 à haut facteur de forme.