Download or read book Optique non lin aire et ses mat riaux written by Roland Levy and published by EDP Sciences. This book was released on 2012-12-03T00:00:00+01:00 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: On sait, depuis l'avènement du laser, que l'intensité de la lumière est susceptible de modifier les propriétés optiques des matériaux. Cette optique « non linéaire » autorise l'interaction entre faisceaux lumineux par l'intermédiaire des milieux qu'ils traversent. Du fondamental à l'appliqué, cet ouvrage aborde la diversité de ces aspects « matériaux » et « fonctions ».

Download or read book Optique non lin aire written by F. Hache and published by EDP Sciences. This book was released on 2017-04-20T00:00:00+02:00 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Depuis l’invention des lasers, l’optique non linéaire n’a cessé de se développer dans de multiples directions. Fondée sur la réponse non linéaire de matériaux soumis à des ondes électromagnétiques intenses, elle permet la génération de seconde harmonique ou de nouvelles fréquences par effets paramétriques, ou encore de modifi...

Download or read book Fabrication de nouveaux mat riaux pour l optique non lin aire par orientation toute optique written by Thami Amine Ouahbi and published by . This book was released on 2005 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Etude th orique et exp rimentale des propri t s optiques non lin aires written by Hasnaa El Ouazzani and published by Omniscriptum. This book was released on 2015-06-24 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les ph nom nes de l'optique non lin aire permettent de r aliser des dispositifs plus efficaces et plus compacts assurant des fonctions telles que la conversion de fr quence ou le traitement du signal. Cependant, les applications dans le domaine de photonique n cessitent la synth se des mat riaux performants et sp cifiques. En raison de leur facilit de mise en oeuvre et de leur possibilit d'optimisation, des compos s organiques conjugu s de type push-pull ont t synth tis s. Ce travail concerne l' tude des propri t s optiques lin aires et non lin aires des mol cules photochromiques, de type azobenz ne, associ es des syst mes polym riques. Ensuite, une nouvelle structure mol culaire base de la mol cule 'la quinol ine' a t tudi e. Ces syst mes fort transfert de charge intramol culaire repr sentent des mat riaux mieux adapt s et des candidats int ressants pour ce domaine.

Download or read book Optique Non Lin aire Polyharmonique written by Pierre Godard and published by Omniscriptum. This book was released on 2010-09 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les quations de Maxwell, qui gouvernent le comportement des champs lectromagn tiques m soscopiques, ne forment pas un ensemble clos d' quations. Il faut donc les compl ter avec des relations constitutives, qui caract risent un mat riau. Nous donnons des relations fort g n rales, et les simplifions ensuite, en explicitant toutes les restrictions physiques que cela comporte, jusqu' obtenir un syst me fini d' quations aux d riv es partielles non-lin aires coupl es r soluble num riquement (m thode des l ments finis). Ceci nous permet d' tudier la diffraction d'un champ lectromagn tique par un syst me, ayant la forme d'un cylindre ou d'un cristal photonique, fini ou infini, g n rant une deuxi me et une troisi me harmonique. Ces diff rentes composantes du champ lectrique interagissent entre elles, par l'effet Kerr-optique ou la d pl tion de l'onde de pompe. Nous g n ralisons aussi l'optique non-lin aire quelques propri t s bien connues des mat riaux dans le r gime lin aire, comme l'anisotropie ou la perte d' nergie lectrique.

Download or read book Mat riaux vitreux pour l optique non lin aire written by Anne Berthereau and published by . This book was released on 1995 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES VERRES SE PLACENT ACTUELLEMENT PARMI LES CANDIDATS POTENTIELS POUR DES APPLICATIONS EN OPTOELECTRONIQUE (TRANSPORT DE L'INFORMATION PAR FIBRES OPTIQUES, COMMUTATION). DANS LA PERSPECTIVE DU DEVELOPPEMENT DE TELS MATERIAUX, CETTE THESE ANALYSE L'ORIGINE DU FORT EFFET KERR OPTIQUE DES VERRES A BASE D'OXYDE DE TELLURE TEO#2. DES CALCULS AB INITIO ONT PERMIS D'ETABLIR DES CORRELATIONS ENTRE LA STRUCTURE LOCALE DES ENTITES POLARISABLES TEO#N ET LEUR ACTIVITE OPTIQUE. EN OUTRE, LE PHENOMENE DE GENERATION DE SECONDE HARMONIQUE DANS LES VERRES A ETE APPREHENDE DANS LE CAS PARTICULIER DE LA SILICE

Download or read book Montreal Pharmaceutical Journal written by and published by . This book was released on 1906 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Basic Concepts for Simple and Complex Liquids written by Jean-Louis Barrat and published by Cambridge University Press. This book was released on 2003-03-27 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting a unified approach, this book focusses on the concepts and theoretical methods that are necessary for an understanding of the physics and chemistry of the fluid state. The authors do not attempt to cover the whole field in an encyclopedic manner. Instead, important ideas are presented in a concise and rigorous style, and illustrated with examples from both simple molecular liquids and more complex soft condensed matter systems such as polymers, colloids, and liquid crystals.

Download or read book Le Tardiglaciaire en Europe du Nord Ouest written by Jean-Pierre Fagnart and published by Comité des travaux historiques et scientifiques - CTHS. This book was released on 1997 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Matrix Theory of Photoelasticity written by Pericles S. Theocaris and published by Springer. This book was released on 2013-06-29 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photoelasticity as an experimental method for analyzing stress fields in mechanics was developed in the early thirties by the pioneering works of Mesnager in France and Coker and Filon in England. Almost concurrently, Föppl, Mesmer, and Oppel in Germany contributed significantly to what turned out to be an amazing development. Indeed, in the fifties and sixties a tremendous number of scientific papers and monographs appeared, all over the world, dealing with various aspects of the method and its applications in experimental stress analysis. All of these contributions were based on the so-called Neumann-Maxwell stress-opticallaw; they were developed by means of the classical methods of vector analysis and analytic geometry, using the conventionallight-vector concept. This way of treating problems of mechanics by photoelasticity indicated many shortcomings and drawbacks of this classical method, especially when three-dimensional problems of elasticity had to be treated and when complicated load and geometry situations existed. Meanwhile, the idea of using the Poincare sphere for representing any polarization profile in photoelastic applications was introduced by Robert in France and Aben in the USSR, in order to deal with problems of polarization oflight passing through aseries of optical elements (retarders andjor rotators). Although the Poincare-sphere presentation of any polarization profile con stitutes a powerful and elegant method, it exhibits the difficulty of requiring manipulations in three-dimensional space, on the surface of the unit sphere. However, other graphical methods have been developed to bypass this difficulty.

Download or read book Uranie written by Camille Flammarion and published by . This book was released on 2019-06-14 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nicolas Camille Flammarion FRAS was a French astronomer and author. He was a prolific author of more than fifty titles, including popular science works about astronomy, several notable early science fiction novels, and works on psychical research and related topics.

Download or read book Le Golfe Du Saint Laurent petit Oc an Ou Grand Estuaire written by Canada. Department of Fisheries and Oceans and published by Peches Et Oceans Direction Generale Des Communications = Fisheries and Oceans Communications Dir. This book was released on 1991 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a workshop, the scientific reviews and the contributed papers presented at the symposium. The document presents a brief historical summary of marine research in the Gulf; reports the discussions, conclusions and recommendations of the different working groups on oceanography (physics, biology, chemistry and sedimentology) and on the fishery (fish and invertebrates); then presents the discussions of each multidisciplinary working group, centered around how the St. Lawrence system may be used as a natural laboratory which will contribute to the solution of major long-term problems of conservation of natural resources and of the quality of the environment.

Download or read book Figures Of Several Centuries written by ARTHUR SYMONS and published by BoD – Books on Demand. This book was released on 2024-01-02 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Figures of Several Centuries" is a collection of essays written by Arthur Symons, a British poet, critic, and essayist. The book features Symons' astute observations and critiques of a wide range of literary and artistic luminaries over several centuries. Known for his contributions to English Decadent poetry and affiliated with the Symbolist movement, Symons examines the lives and works of a variety of characters in the arts and literature. The essays address a wide range of subjects, such as debates on poets, authors, and artists from many eras of history. As a literary critic, Symons analyses each person with a lyrical sensibility and a profound respect for art. In addition to providing historical context, the collection highlights the importance of several creative figures over time in various historical eras. With its insight into the rich fabric of artistic expression across the centuries, "Figures of Several Centuries" advances knowledge of the relationship between art, literature, and culture.

Download or read book L Industrie C ramique written by and published by . This book was released on 1961 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bulletin de documentation, nos. 96-172, included in 1964-1970 volumes.

Download or read book On the Continuity of the Gaseous and Liquid States written by J. D. Van Der Waals and published by Courier Corporation. This book was released on 2004-01-01 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This much-cited thesis by J. D. van der Waals, the recipient of the 1910 Nobel Prize in physics, is accompanied by an introductory essay by J. S. Rowlinson and another work by van der Waals on the theory of liquid mixtures. 1988 edition.

Download or read book Precision Measurement and Fundamental Constants Proceedings written by United States. National Bureau of Standards and published by . This book was released on 1971 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Dawn of Astronomy written by J. Norman Lockyer and published by Courier Dover Publications. This book was released on 2006-04-28 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: A pioneer in the fields of astrophysics and astro-archeology, J. Norman Lockyer believed that ancient Egyptian monuments were constructed "in strict relation to the stars." In this celebrated study, he explores the relationship between astronomy and architecture in the age of the pharaohs. Lockyer addresses one of the many points already extensively investigated by Egyptologists: the chronology of the kings of Egypt. All experts are in accord regarding the identity of the first monarch, but they cannot agree upon the dates of his reign within a thousand years. The author contends that by applying a knowledge of astronomy to the actual site orientation of the region's pyramids and temples, accurate dating can be achieved. In order to accomplish this, Lockyer had to determine the level of the ancient Egyptian ideas of astronomy. Some of his inferences have been invalidated by subsequent scholarship, but many of his other conclusions stand firm and continue to provide sensational leads into contemporary understanding of archaic astronomy.