Download or read book Spectroscopie de saturation tr s haute r solution au moyen de lasers guides d ondes CO written by Christophe Salomon and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spectroscopie de saturation tr s haute r solution au moyen de lasers guid s d ondes CO2 written by Christophe Salomon and published by . This book was released on 1979 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Description du dispositif experimental. Application aux transitions rovibrationnelles de sf::(6), o::(5)o::(4), cf::(4), o::(3), ch::(3)oh, pf::(5). Détermination des paramètres conduisant aux formes de raies observées. Résolution de la structure hyperfine quadripolaire de o::(3)o::(4). Etude de molécules optiquement actives pour mettre en évidence un pouvoir rotatoire anormal associé aux transitions rovibrationnelles. Sur le plan théorique, le programme Shape permet d'obtenir quantitativement une forme de raie pour les experiences d'absorption saturée en champ fort et de répondre aux questions que pose la technique des franges de ramsey en spectroscopie de saturation

Download or read book Spectroscopie de saturation de 32SF avec un laser guide d ondes CO written by Sigrid Avrillier and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contribution des tudes de spectroscopie haute r solution par laser C02 guide d onde written by François Herlemont and published by . This book was released on 1985 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: La spectroscopie haute résolution dans la cavité d'un laser à C02 est une méthode de spectroscopie utilisée maintenant dans divers laboratoires. La mise au point de laser à C02 guide d'onde ayant des caractéristiques fort différentes des lasers à onde libre nous a conduit à exploiter ses spécificités en spectroscopie intracavité haute résolution. Deux types de spectroscopie subDoppler ont ainsi été développés: - La spectroscopie de saturation. Dans ce cas, c'est la gamme d'accord importante du laser à C02 guide d'onde qui est exploitée. Le Bromure de Methyle a servi de gaz test. Les nombreuses observations ont permis une analyse détaillée de la bande de vibration v6 des deux espèces isotopiques. - La spectroscopie à deux photons à effet Doppler compensé. Cette technique de spectroscopie haute résolution est surtout utilisée dans le domaine visible. Son extension au domaine infrarouge n'est pas sans poser de problèmes. Nous montrons comment la disposition intracavité du gaz absorbant associée à l'utilisation d'un amplificateur à C02 guide d'onde réalise un compromis entre les différents paramètres intervenant dans le processus d'absorption à deux photons (densité de puissance gamme d'accord, résolution). Nous avons appliqué cette méthode de spectroscopie à l'étude de la bande de vibration v3 = 0 + v3 = 2 de SF6, molécule type pour les expériences d'excitation multiphotonique. Par ailleurs, une nouvelle voie de recherche permettant 1'étude d'absorption à deux photons a été mise au point : le gaz absorbant est placé dans une cavité passive en dehors de cette cavité laser. Cette configuration originale fournit une phénoménologie riche dont les principaux aspects sont abordés. Au cours de ces études, de nombreux effets ont été observés et analysés: régime de Q-switch (automodulation de la puissance laser), régime de bistabilité d'absorption, de bistabilité dispersive, dispersion à deux photons.

Download or read book Spectroscopie de saturation de haute pr cision et sensibilit en champ laser fort written by Christian Chardonnet and published by . This book was released on 1989 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce mémoire présente des résultats théoriques et experimentaux obtenus à partir de l'étude des structures hyperfines dans la bande nu3 de la molécule oso4. L'observation à l'aide de lasers à co2 ultrastables et d'un spéctromètre à tres haute résolution et l'analyse de structures hyperfines de 189oso4 et 187oso4 ont conduit à la détermination tres précise de toutes les constantes hyperfines importantes des niveaux v3=0 et v3=1, grâce à l'observation de croisements de niveaux hyperfins. Une relation entre constantes de spin-rotation et de spin-vibration a étè montrée et interpretée.La difference avec sf6 a étè expliquée. Les diverses contributions à l'interaction quadrupolaire électrique dans 189oso4 ont étè dégagées; en particulier, le rôle de l'interaction de coriolis a étè mis en évidence. Une analyse détaillée de la signification des constantes hyperfines a étè menée et la comparaison avec les valeurs experimentales a mis en lumière certaines difficultès et ouvert un nouveau champ d'investigation. La première observation d'une raie de saturation de co2 avec une résolution de 2 khz a étè effectuée et la fréquence absolue d'une telle raie a étè mesurèe a 50 hz pres grâce à la mise au point d'une technique de compensation de la derivé du laser de réference qui a fortement amélioré les performances métrologiques du spectromètre; ceci reprèsente un gain de 2 ordres de grandeur. Par ailleurs, une intercomparaison avec le système laser+fabry-perot du lptf a révelé un accord au hz pres (3.e(14)) des deux systèmes, démontrant ainsi leurs qualités métrologiques inegalées a 10 microns. Lors de l'étude des croisements de niveaux hyperfins, il est apparu que les raies de saturation en présence d'un champ laser tres intense présentaient une distorsion très spectaculaire. Il a étè montré sur le plan experimental et théorique le rôle essentiel joué par la courbure des fronts d'

Download or read book Contribution la r alisation de spectrom tres de saturation et d absorption deux photonspar laser CO2 guide d onde written by Jacky Skrzypczak and published by . This book was released on 1989 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Application de tels lasers, sources de bonne stabilité, de grande pureté spectrale et accordables autour de chaque raie d'émission sur des gammes pouvant atteindre 600 MHz, à l'étude de SiH4 en absorption saturée par spectrométrie IR à haute résolution. Développement d'un nouveau type de spectromètre où l'on place le gaz absorbant dans une cavité optique passive ; démonstration de son utilisation en spectrométrie de saturation sur des molécules à faible moment dipolaire (CH3I, CH3Br, etc.) mise en évidence sur SF6 d'absorptions à 2 photons à effet Doppler compensé dont la largeur totale est inférieure à 50 KHz. En accordant cette cavité, exploitation des termes d'absorption et de dispersion ; présence d'effets de bistabilité si l'on tient compte de la non linéarité du milieu absorbant

Download or read book Laser Spectroscopy 1 written by Wolfgang Demtröder and published by Springer. This book was released on 2014-05-07 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keeping abreast of the latest techniques and applications, this new edition of the standard reference and graduate text on laser spectroscopy has been completely revised and expanded. While the general concept is unchanged, the new edition features a broad array of new material, e.g., ultrafast lasers (atto- and femtosecond lasers) and parametric oscillators, coherent matter waves, Doppler-free Fourier spectroscopy with optical frequency combs, interference spectroscopy, quantum optics, the interferometric detection of gravitational waves and still more applications in chemical analysis, medical diagnostics, and engineering.

Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.

Download or read book Coherent Excitations in Biological Systems written by H. Fröhlich and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The articles in this volume are based on papers presented at the International Symposium in Bad Neuenahr November 29 - December 1, 1982. The meeting was directed by H. Frohlich and was sponsored by IBM Deutschland through its Science and Education Programs Department. Contents Coherence in Biology H. Frohlich . Coherent Excitations and Raman Effect F. Drissler and L. Santo (With 4 Figures) 6 The Non-thermal Effect of Millimeter Wave Radiation on the Puffing of Giant Chromosomes F. Kremer, C. Koschnitzke, L. Santo, P. Quick, and A. Poglitsch (With 4 Figures) 10 Nonthermal Resonant Effects of 42 GHz Microwaves on the Growth of Yeast Cultures W. Grundler, F. Keilmann, V. Putterlik, L. Santo, D. Strube, and I. Zimmermann (With 15 Figures) 21 On the Microwave Response of the Drosophila Melanogaster G. Nimtz (With 5 Figures) 38 Effects of Low-level Millimeter Waves on Cellular and Subcellular Systems S. M. Motzkin, L. Benes, N. Block, B. Israel, N. May, J. Kuriyel, L. Birenbaum, S. Rosenthal, and Q. Han (With 12 Figures). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Millimeter-wave and Far-infrared Spec roscopy on Biological Macromolecules L. Genzel, F. Kremer, A. Poglitsch, and G. Bechtold (With 10 Figures). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Excitation of Proteins by Electric Fields J. B. Hasted, S. K. Husain, A. Y. Ko, D. Rosen, E. Nicol, and J. R. Birch (With 8 Figures) 71 Isotope Effects and Collective Excitations M. U. Palma (With 3 Figures) 84 Long-range Energy Continua in the Living Cell: Protochemical Considerations G. R. Welch and M. N. Berry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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.

Download or read book Optical Properties Of Graphene written by Rolf Binder and published by World Scientific. This book was released on 2016-11-11 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive state-of-the-art overview of the optical properties of graphene. During the past decade, graphene, the most ideal and thinnest of all two-dimensional materials, has become one of the most widely studied materials. Its unique properties hold great promise to revolutionize many electronic, optical and opto-electronic devices. The book contains an introductory tutorial and 13 chapters written by experts in areas ranging from fundamental quantum mechanical properties to opto-electronic device applications of graphene.

Download or read book Semiconductor Disk Lasers written by Oleg G. Okhotnikov and published by John Wiley & Sons. This book was released on 2010-03-30 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely publication presents a review of the most recent developments in the field of Semiconductor Disk Lasers. Covering a wide range of key topics, such as operating principles, thermal management, nonlinear frequency conversion, semiconductor materials, short pulse generation, electrical pumping, and laser applications, the book provides readers with a comprehensive account of the fundamentals and latest advances in this rich and diverse field. In so doing, it brings together contributions from world experts at major collaborative research centers in Europe and the USA. Each chapter includes a tutorial style introduction to the selected topic suitable for postgraduate students and scientists with a basic background in optics - making it of interest to a wide range of scientists, researchers, engineers and physicists working and interested in this rapidly developing field. It will also serve as additional reading for students in the field.

Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer. This book was released on 1976 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis· seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) *at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac· tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 20 (thesis year 1975) a total of 10,374 theses titles from 28 Canadian and 239 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. The organization of Volume 20 is identical to that of past years. It consists of theses titles arranged by discipline and by university within each discipline.

Download or read book Multifunctional Oxide Heterostructures written by Evgeny Y. Tsymbal and published by OUP Oxford. This book was released on 2012-08-30 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the rapidly developing field of oxide thin-films and heterostructures. Oxide materials combined with atomic-scale precision in a heterostructure exhibit an abundance of macroscopic physical properties involving the strong coupling between the electronic, spin, and structural degrees of freedom, and the interplay between magnetism, ferroelectricity, and conductivity. Recent advances in thin-film deposition and characterization techniques made possible the experimental realization of such oxide heterostructures, promising novel functionalities and device concepts. The book consists of chapters on some of the key innovations in the field over recent years, including strongly correlated oxide heterostructures, magnetoelectric coupling and multiferroic materials, thermoelectric phenomena, and two-dimensional electron gases at oxide interfaces. The book covers the core principles, describes experimental approaches to fabricate and characterize oxide heterostructures, demonstrates new functional properties of these materials, and provides an overview of novel applications.

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.

Download or read book Nonlinear Electrodynamics in Biological Systems written by W. Adey and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: The past half century has seen an extraordinary growth in the fields of cellular and molecular biology. From simple morphologi cal concepts of cells as the essential units of living matter there has been an ever-sharper focus on functional organization of living systems, with emphasis on molecular dynamics. Thus, life forms have come to be defined increasingly in terms of metabolism, growth, reproduction and responses to environmental perturbations. Since these properties occur in varying degrees in systems below the level of cellular organization, there has been a blurring of older models that restricted the concepts of life to cellular systems. At the same time, a search has begun for elemental as pects of molecular and atomic behavior that might better define properties common to all life forms. This search has led to an examination of nonlinear behavior in biological macromolecules, whether in response to electrical or chemical stimulation, for example, or as a means of signaling along a molecular chain, or as a means of energy transfer. Experimental knowledge in this area has grown rapidly in the past decade, and in some respects has outstripped theoretical models adequate to ex plain these new observations. Nevertheless, it can be claimed that there is now an impressive body of experiments implicating non linear, nonequilibrium processes as fundamental steps in sequential operations of biological systems.

Download or read book Nanomagnetism and Spintronics written by Teruya Shinjo and published by Elsevier. This book was released on 2013-10-07 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concise and accessible chapters of Nanomagnetism and Spintronics, Second Edition, cover the most recent research in areas of spin-current generation, spin-calorimetric effect, voltage effects on magnetic properties, spin-injection phenomena, giant magnetoresistance (GMR), and tunnel magnetoresistance (TMR). Spintronics is a cutting-edge area in the field of magnetism that studies the interplay of magnetism and transport phenomena, demonstrating how electrons not only have charge but also spin. This second edition provides the background to understand this novel physical phenomenon and focuses on the most recent developments and research relating to spintronics. This exciting new edition is an essential resource for graduate students, researchers, and professionals in industry who want to understand the concepts of spintronics, and keep up with recent research, all in one volume. - Provides a concise, thorough evaluation of current research - Surveys the important findings up to 2012 - Examines the future of devices and the importance of spin current