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Etude De Diodes Lasers Pour Des Applications Metrologiques De La Retro Injection Optique
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Book Synopsis Étude de diodes lasers pour des applications métrologiques de la rétro-injection optique by : Gregory Mourat
Download or read book Étude de diodes lasers pour des applications métrologiques de la rétro-injection optique written by Gregory Mourat and published by . This book was released on 1999 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le phénomène de "self-mixing" (interférences à deux ondes dans le milieu actif d'une diode laser) est utilisé pour des applications métrologiques telles que la mesure de distance, de déplacement ou de vitesse. Dans ces dispositifs, une diode laser émet un faisceau en direction d'une cible. Une partie de l'onde lumineuse est réfléchie en direction du laser et perturbe la puissance d'émission. L'information métrologique recherchée est alors déterminée en traitant ces variations de puissance. Dans la première partie (ch.I à III), les limitations intrinsèques des interférences par self-mixing dues à la source laser sont étudiées. La seconde partie (ch.IV à VI) a pour objectif de déterminer les critères prépondérants au choix de la source laser à utiliser pour chaque application métrologique du self-mixing.
Book Synopsis Etude du rayonnement émis par les diodes lasers en vue de leur utilisation en métrologie des rayonnements by : JEANNE-MARIE.. DESBANCS
Download or read book Etude du rayonnement émis par les diodes lasers en vue de leur utilisation en métrologie des rayonnements written by JEANNE-MARIE.. DESBANCS and published by . This book was released on 1993 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE DOMAINE DES MESURES DE RAYONNEMENT OPTIQUE CONNAIT ACTUELLEMENT UNE EVOLUTION IMPORTANTE, MARQUEE PRINCIPALEMENT PAR UNE DEMANDE DE MESURES MONOCHROMATIQUES A HAUT NIVEAU DE PUISSANCE, AVEC UNE INCERTITUDE DE PLUS EN PLUS FAIBLE. LES DIODES LASERS, QUI EMETTENT UN RAYONNEMENT MONOCHROMATIQUE INTENSE DANS LE ROUGE ET LE PROCHE INFRA-ROUGE, SE PRESENTENT COMME DE NOUVELLES SOURCES INTERESSANTES POUR LA MISE EN UVRE DE DIVERSES MESURES RADIOMETRIQUES EN BANDE TRES ETROITE. LEUR UTILISATION NECESSITE NEANMOINS QUE LEUR STABILITE EN PUISSANCE SOIT ACCEPTABLE SUR DES DUREES SUFFISANTES POUR EFFECTUER DES MESURES PRECISES, QUE LEUR SPECTRE D'EMISSION SOIT PARFAITEMENT CONNU, ET QUE LA GEOMETRIE DE LEUR FAISCEAU SOIT COMPATIBLE AVEC LES BESOINS DE LA RADIOMETRIE. CES TROIS CRITERES ONT CONDUIT AU DEVELOPPEMENT DE DIFFERENTS SYSTEMES DE CARACTERISATION DU RAYONNEMENT EMIS PAR LES DIODES LASERS, POUR DETERMINER LEURS PERFORMANCES ET DEFINIR LEURS APTITUDES POUR DES APPLICATIONS METROLOGIQUES. AINSI, EN CHOISISSANT SOIGNEUSEMENT LEURS CONDITIONS DE FONCTIONNEMENT, LES DIODES LASERS PRESENTENT DES CARACTERISTIQUES DE MONOCHROMATICITE ET DE STABILITE EN PUISSANCE TOUT A FAIT SATISFAISANTES POUR DES USAGES RADIOMETRIQUES. PAR CONTRE, LA GEOMETRIE PARTICULIERE DU FAISCEAU N'ETANT PAS DIRECTEMENT UTILISABLE, DEUX METHODES D'ADAPTATION ONT ETE ENVISAGEES. L'UNE PERMET D'OBTENIR DES SOURCES LASERS COLLIMATEES TRES MONOCHROMATIQUES POUR L'ETUDE ET L'ETALONNAGE DES DETECTEURS DE RAYONNEMENT OPTIQUE. L'AUTRE ASSOCIE UNE DIODE LASER A UNE SPHERE INTEGRATRICE POUR OBTENIR UNE SOURCE LAMBERTIENNE UTILISABLE EN TANT QU'ETALON DE LUMINANCE MONOCHROMATIQUE
Book Synopsis Diode Lasers with Optical Feedback and Optical Injection by : Markku Vainio
Download or read book Diode Lasers with Optical Feedback and Optical Injection written by Markku Vainio and published by . This book was released on 2006 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tiivistelmä: Optista takaisinkytkentää ja optista injektiota hyödyntävät diodilaserit : sovellukset metrologiassa.
Download or read book Indium Seals written by R. O. Adams and published by . This book was released on 1964 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The feasibility of using indium seals for large vacuum bell jars has been investigated. It is shown that such seals can be made; however, use of this type seal for repetitive operations is not recommended.
Book Synopsis Product Life-Cycle Management by : Max Giordano
Download or read book Product Life-Cycle Management written by Max Giordano and published by John Wiley & Sons. This book was released on 2012-12-17 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a comprehensive view of the most recent major international research in the field of tolerancing, and is an excellent resource for anyone interested in Computer Aided Tolerating. It is organized into 4 parts. Part 1 focuses on the more general problems of tolerance analysis and synthesis, for tolerancing in mechanical design and manufacturing processes. Part 2 specifically highlights the simulation of assembly with defects, and the influence of tolerances on the quality of the assembly. Part 3 deals with measurement aspects, and quality control throughout the life cycle. Different measurement technologies and methods for estimating uncertainty are considered. In Part 4, different aspects of tolerancing and their interactions are explored, from the definition of functional requirement to measurement processes in a PLM approach.
Download or read book Laser-cooled and Trapped Atoms written by and published by . This book was released on 1983 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Polar Cusp written by J.A. Holtet and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings are based upon introductory talks, research reports and discussions from the NATO Advanced Workshop on the "Morphology and Dynamics of the Polar Cusp", held at Lillehammer, Norway, 7-12 May, 1984. The upper atmosphere at high latitudes is called the "Earth's win dow to outer space". Through various electrodynamic coupling process es as well as through direct transfer of particles many geophysical effects displayed there are direct manifestations of phenomena occurring in the deep space. The high latitude ionosphere will also exert a feedback on the regions of the magnetosphere and atmosphere to which it is coupled, acting as a momentum and energy source and sink, and a source of particles. Of particular interest are the sections of the near space known as the Polar Cusp. A vast portion of the earth's magnetic field envelope is electrically connected to these regions. This geometry results in a spatial mapping of the magnetospheric pro cesses and a focusing on to the ionosphere. In the Polar Cusps the solar wind plasma has also direct access to the upper atmosphere. The polar regions are thus of extreme importance when it comes to under standing the physical processes in the near space and their effect on our environment. The Introductory Talks given at this workshop provided a common background for discussing and understanding the physics of the Polar Cusp. By this book we will make the information which thus was provid ed to the participants of the workshop accessible to a wider audience.
Book Synopsis Theory Of Superconductivity by : J. Robert Schrieffer
Download or read book Theory Of Superconductivity written by J. Robert Schrieffer and published by CRC Press. This book was released on 2018-03-05 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theory of Superconductivity is primarily intended to serve as a background for reading the literature in which detailed applications of the microscopic theory of superconductivity are made to specific problems.
Download or read book Sensors, Update 2 written by Henry Baltes and published by Wiley-VCH. This book was released on 1996 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers a review of current highlights in the field of sensors, and should be particularly useful for researchers planning to invest in new instrumentation. There is a section on sensor markets, providing an overview of suppliers and market trends for a particular sector.
Book Synopsis CESAR - Cost-efficient Methods and Processes for Safety-relevant Embedded Systems by : Ajitha Rajan
Download or read book CESAR - Cost-efficient Methods and Processes for Safety-relevant Embedded Systems written by Ajitha Rajan and published by Springer Science & Business Media. This book was released on 2013-03-25 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book summarizes the findings and contributions of the European ARTEMIS project, CESAR, for improving and enabling interoperability of methods, tools, and processes to meet the demands in embedded systems development across four domains - avionics, automotive, automation, and rail. The contributions give insight to an improved engineering and safety process life-cycle for the development of safety critical systems. They present new concept of engineering tools integration platform to improve the development of safety critical embedded systems and illustrate capacity of this framework for end-user instantiation to specific domain needs and processes. They also advance state-of-the-art in component-based development as well as component and system validation and verification, with tool support. And finally they describe industry relevant evaluated processes and methods especially designed for the embedded systems sector as well as easy adoptable common interoperability principles for software tool integration.
Book Synopsis Frequency Standards by : Fritz Riehle
Download or read book Frequency Standards written by Fritz Riehle and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of all measurement units, frequency is the one that may be determined with the highest degree of accuracy. It equally allows precise measurements of other physical and technical quantities, whenever they can be measured in terms of frequency. This volume covers the central methods and techniques relevant for frequency standards developed in physics, electronics, quantum electronics, and statistics. After a review of the basic principles, the book looks at the realisation of commonly used components. It then continues with the description and characterisation of important frequency standards from atomic clocks, to frequency stabilised lasers. The whole is rounded of with a discussion of topical applications in engineering, telecommunications, and metrology.
Download or read book Electromagnetic Metrology written by and published by . This book was released on 1975 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Excellence in Mathematics and Science by : United States. Congress
Download or read book Excellence in Mathematics and Science written by United States. Congress and published by . This book was released on 1990 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical Voltammetry by : M.R. Smyth
Download or read book Analytical Voltammetry written by M.R. Smyth and published by Elsevier Science. This book was released on 1992-01-31 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this volume is to review the state-of-the-art in analytical voltammetry with regard to theory and instrumentation, and show how these relate to the analysis of inorganic, organometallic, organic and biological molecules. Modern voltammetric techniques have practical applications in biological, pharmaceutical and environmental chemistry. The growing importance of voltammetry in the development of modified electrodes and biological electrodes and chemical and biological sensors is also highlighted.
Book Synopsis Ultra Wide Band Antennas by : Xavier Begaud
Download or read book Ultra Wide Band Antennas written by Xavier Begaud and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra Wide Band Technology (UWB) has reached a level of maturity that allows us to offer wireless links with either high or low data rates. These wireless links are frequently associated with a location capability for which ultimate accuracy varies with the inverse of the frequency bandwidth. Using time or frequency domain waveforms, they are currently the subject of international standards facilitating their commercial implementation. Drawing up a complete state of the art, Ultra Wide Band Antennas is aimed at students, engineers and researchers and presents a summary of internationally recognized studies.
Book Synopsis Metamaterials IV by : Vladimir Kuzmiak
Download or read book Metamaterials IV written by Vladimir Kuzmiak and published by Society of Photo Optical. This book was released on 2009 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes Proceedings Vol. 7821
