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Etude Du Transfert Dinformation Spatiale Dun Faisceau Laser Vers La Diffusion Raman Stimulee
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Book Synopsis ETUDE DU TRANSFERT D'INFORMATION SPATIALE D'UN FAISCEAU LASER VERS LA DIFFUSION RAMAN STIMULEE by : FABRICE.. VAUDELLE
Download or read book ETUDE DU TRANSFERT D'INFORMATION SPATIALE D'UN FAISCEAU LASER VERS LA DIFFUSION RAMAN STIMULEE written by FABRICE.. VAUDELLE and published by . This book was released on 1997 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA DIFFUSION RAMAN STIMULEE PRESENTE DES SIMILITUDES AVEC UNE EMISSION STIMULEE DE TYPE LASER. ELLE OFFRE LA POSSIBILITE DE FAIRE UNE CONVERSION D'ENERGIE D'UNE FREQUENCE LUMINEUSE SUR UNE AUTRE. ON EXAMINE DANS CETTE THESE LES POSSIBILITES DE TRANSFERER UNE INFORMATION SPATIALE DU FAISCEAU LASER SUR LE FAISCEAU RAMAN. DANS UN PREMIER TEMPS, NOUS PRESENTONS DE MANIERE GENERALE LA DIFFUSION RAMAN STIMULEE ET L'OPTIQUE NON LINEAIRE. NOUS INTRODUISONS LES ASPECTS DE PROPAGATION ET DE DIFFRACTION, ET NOUS EFFECTUONS UNE ETUDE EXPERIMENTALE SUR LA COHERENCE SPATIALE DE FAISCEAUX RAMAN STIMULES EXCITES DANS DES MILIEUX DENSES. LA RELATION ENTRE COUPLAGE DIFFRACTIF ET COHERENCE EST DEMONTREE. DANS UN DEUXIEME TEMPS, NOUS CHERCHONS A VOIR COMMENT SE DEVELOPPE LA PHASE SPATIALE RAMAN, EN PARTICULIER LORSQUE L'INTENSITE LASER POSSEDE UNE STRUCTURE SPATIALE COMPLEXE. NOUS REPLACONS ENSUITE CETTE ANALYSE DANS LE CADRE DE L'OPTIQUE DE FOURIER -CONCEPT DE BASE DES TECHNIQUES D'IMAGERIE- ET DEVELOPPONS SIMULATION NUMERIQUE ET EXPERIMENTATION. LES RESULTATS FONDAMENTAUX AINSI OBTENUS PERMETTENT D'ENVISAGER LA POSSIBILITE D'APPLIQUER L'EFFET RAMAN STIMULE DANS DES SYSTEMES CLASSIQUES D'IMAGERIE. NOUS ETUDIONS LA FAISABILITE D'UNE REPRODUCTION D'IMAGE ENTRE LASER ET RETRODIFFUSION RAMAN. APRES UNE SYNTHESE BIBLIOGRAPHIQUE DES TRAVAUX SUR LA CONJUGAISON DE PHASE PAR RETRODIFFUSION, NOUS CONDUISONS UNE RECHERCHE EXPERIMENTALE SUR LA RETRODIFFUSION RAMAN EXCITEE DANS L'ACETONE. NOUS ABOUTISSONS AU CONSTAT QUE LE FACONNAGE DE FORMES SPATIALES SUR LE LASER EN COMBINANT OPTIQUE DE FOURIER ET DIFFUSION RAMAN STIMULEE EST INTERESSANT SI LES FORMES NE SONT PAS DE PETITES DIMENSIONS. DANS NOTRE DERNIER CHAPITRE, UNE NOUVELLE VOIE DE RECHERCHE EST OUVERTE : IL S'AGIT DE TRANSMETTRE UN SIGNAL LASER DE FAIBLE AMPLITUDE SUR UN FAISCEAU RAMAN A L'AIDE D'UN BRUIT SPATIAL LASER DE HAUTE INTENSITE. UNE EXPERIMENTATION TENTE AVEC UN RELATIF SUCCES DE FAIRE FONCTIONNER CE PRINCIPE. L'OPTIMISATION DE LA TECHNIQUE REVIENT A CHERCHER UNE RESONANCE STOCHASTIQUE.
Book Synopsis Étude de la diffusion Raman stimulée à partir d'un laser ultra-violet à halogénures de gaz rares by : Patrick Chevrou (auteur d'une thèse de sciences.)
Download or read book Étude de la diffusion Raman stimulée à partir d'un laser ultra-violet à halogénures de gaz rares written by Patrick Chevrou (auteur d'une thèse de sciences.) and published by . This book was released on with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Étude de la diffusion raman stimulée à partir d'un laser ultra-violet à halogénures de gaz rares by : Patrick Chevrou
Download or read book Étude de la diffusion raman stimulée à partir d'un laser ultra-violet à halogénures de gaz rares written by Patrick Chevrou and published by . This book was released on 1980 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Milieu optique non linéaire : l'hydrogène entre 15 et 22 bars
Book Synopsis RECONSTRUCTION D'IMAGE PAR RETRODIFFUSION STIMULEE RAMAN ET AMELIORATION DU RENDEMENT DE CONVERSION by : SALIH.. ERRHAIMINI
Download or read book RECONSTRUCTION D'IMAGE PAR RETRODIFFUSION STIMULEE RAMAN ET AMELIORATION DU RENDEMENT DE CONVERSION written by SALIH.. ERRHAIMINI and published by . This book was released on 1995 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA RETRODIFFUSION RAMAN STIMULEE PEUT ETRE UTILISEE POUR DIFFERENTES APPLICATIONS, EN PARTICULIER LA FABRICATION DES FREQUENCES LASER NOUVELLES ET CONJUGAISON DE PHASE. DANS NOTRE TRAVAIL, NOUS MONTRONS QU'IL EST POSSIBLE DE TRANSFERER SUR LE RAYONNEMENT RAMAN STIMULE L'IMAGE D'UN OBJET ECLAIRE PAR UN FAISCEAU LASER AVEC DE BONS RENDEMENTS DE CONVERSION. NOUS AMELIORONS D'ABORD LE RENDEMENT DE RETRODIFFUSION EN CHOISISSANT DES MATERIAUX ACTIFS (EXEMPLE: L'ACETONE) ET DES CONDITIONS GEOMETRIQUES D'EXCITATION CONVENABLES. NOUS TROUVONS LES CONDITIONS GEOMETRIQUES ET ENERGETIQUES POUR UN BON TRANSFERT D'IMAGE ET MONTRONS QUE DEUX PHENOMENES JOUENT UN ROLE IMPORTANT DANS LA RECONSTRUCTION D'IMAGE: L'AMPLIFICATION RAMAN, ET LA RELATION DE PHASE ENTRE ONDES LASER ET RAMAN. NOUS MONTRONS LE ROLE POSSIBLE DES VARIATIONS NON LINEAIRES DE L'INDICE DE REFRACTION QUI PEUT ACCOMPAGNER L'EFFET RAMAN. NOUS PROPOSONS DES APPLICATIONS EN PARTICULIER A LA VISUALISATION D'OBJETS DE PHASE ET A L'ETUDE DE LA COHERENCE DE LA DIFFUSION RAMAN
Book Synopsis General Relativity and Gravitational Waves by : Joseph Weber
Download or read book General Relativity and Gravitational Waves written by Joseph Weber and published by Courier Corporation. This book was released on 2004-01-01 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: An internationally famous physicist and electrical engineer, the author of this text was a pioneer in the investigation of gravitational waves. Joseph Weber's General Relativity and Gravitational Waves offers a classic treatment of the subject. Appropriate for upper-level undergraduates and graduate students, this text remains ever relevant. Brief but thorough in its introduction to the foundations of general relativity, it also examines the elements of Riemannian geometry and tensor calculus applicable to this field. Approximately a quarter of the contents explores theoretical and experimental aspects of gravitational radiation. The final chapter focuses on selected topics related to general relativity, including the equations of motion, unified field theories, Friedman's solution of the cosmological problem, and the Hamiltonian formulation of general relativity. Exercises. Index.
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.
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.
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.
