Download or read book Etude de vitroc ramiques optiques pour le doublement de fr quence written by Hélène Vigouroux and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le développement des lasers de puissance engendre un intérêt pour la recherche de matériaux présentant des propriétés optiques non linéaires (ONL). Les matériaux vitreux sont de très bons candidats puisqu'ils peuvent être transparents et élaborés en grandes dimensions. La précipitation de particules non centro-symétrique dans un verre permet d'engendrer cette propriété en volume, et d'ingérer facilement ce matériau dans les dispositifs lasers. Dans ce contexte, cette thèse présente les résultats obtenus sur la précipitation de la phase LiNO3 dans la matrice vitreuse 35 Li2O- 25 Nb2O5- 40 SiO2. Le mécanisme de cristallisation de cette phase est étudié par analyse thermique, imagerie optique et électronique ainsi que par une analyse in-situ. Ces analyses mettent en évidence une cristallisation sphérolitique du niobate de lithium dans ce verre, conduisant à l'obtention de vitrocéramiques. Les propriétés optiques non linéaires d'ordre deux sont mesurés sur ces matériaux. Un signal original et isotrope de Génération de Second Harmonique a été mesuré. Une analyse multi-échelle permet une meilleure compréhension et une corrélation entre la structure des sphérolites et l'origine de la génération d'un tel signal. Le modèle développé suite à ces analyses permet d'entrevoir le développement de nouveaux matériaux micro-composites à propriétés ONL isotropes.
Download or read book Common European Framework of Reference for Languages written by Council of Europe and published by Council of Europe. This book was released on 2002 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Framework has been widely adopted in setting curriculum standards, designing courses, developing materials and in assessment and certification. This compendium of case studies is written by authors who have a considerable and varied experience of using the Framework in their professional context. The aim is to help readers develop their understanding of the Framework and its possible uses in different sectors of education.
Download or read book Comptes rendus de l Acad mie des sciences written by and published by . This book was released on 1996 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalogue of Scientific Papers written by Royal Society (Great Britain) and published by . This book was released on 1923 with total page 1092 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical physics of the U S S R written by and published by . This book was released on 1935 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal de physique th orique et appliqu e written by and published by . This book was released on 1923 with total page 2250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning in 1920, contains section on bibliography and since 1928 minutes and résumeés of the society's proceedings, as well as other supplementary material (often separately paged).
Download or read book Catalogue of Scientific Papers 1800 1900 ser 4 1884 1900 written by Royal Society (Great Britain) and published by . This book was released on 1923 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abstracts of Papers written by and published by . This book was released on 1966 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin written by Société française des électriciens and published by . This book was released on 1907 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Expos s de Sections Sp cialis es written by R. Desroches and published by . This book was released on 1989 with total page 1921 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Catalogue of Scientific Literature 1901 1914 written by and published by . This book was released on 1902 with total page 878 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fish Forum Book of abstracts 2018 written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2019-02-19 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes all the abstracts of the keynotes, oral contributions and posters presented by participants on the occasion of the Forum on Fisheries Science in the Mediterranean and the Black Sea (Fish Forum 2018). Organized by the GFCM at FAO headquarters, Rome, Italy, from 10 to 14 December 2018, in collaboration with technical partners, the Fish Forum 2018 is a first-of-the-kind event gathering scientists, researchers, engineers, academics, practitioners, managers and decision-makers from around the world to discuss and share knowledge on the latest developments in fisheries science. The material contained in this book of abstracts stems from the contributions received from participants and selected by an international scientific committee based on their technical quality and relevance. The abstracts are subdivided according to the three main themes of the Fish Forum 2018: Better science for better advice; Healthy seas and sustainable fisheries; and Economic analysis and technology for societal benefit. Each theme is introduced by a keynote presentation, followed by oral presentations and posters. These documents form the basis of the discussions held during parallel sessions and poster sessions of the Fish Forum 2018.
Download or read book Current Programs written by and published by . This book was released on 1976 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1993 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development Of Large Technical Systems written by Renate Mayntz and published by Routledge. This book was released on 2019-07-11 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an outcome of the conference on the development of large technical systems held in Berlin in 1986. It focuses on the comparative analysis of the development of large technical systems, particularly electrical power, railroad, air traffic, telephone, and other forms of telecommunication.
Download or read book Optical Properties of Semiconductor Nanostructures written by Marcin L. Sadowski and published by Springer Science & Business Media. This book was released on 2000-06-30 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical methods for investigating semiconductors and the theoretical description of optical processes have always been an important part of semiconductor physics. Only the emphasis placed on different materials changes with time. Here, a large number of papers are devoted to quantum dots, presenting the theory, spectroscopic investigation and methods of producing such structures. Another major part of the book reflects the growing interest in diluted semiconductors and II-IV nanosystems in general. There are also discussions of the fascinating field of photonic crystals. `Classical' low dimensional systems, such as GsAs/GaAlAs quantum wells and heterostructures, still make up a significant part of the results presented, and they also serve as model systems for new phenomena. New materials are being sought, and new experimental techniques are coming on stream, in particular the combination of different spectroscopic modalities.
Download or read book Anais do Congresso Internacional de Pastagens written by and published by . This book was released on 1989 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
