Download or read book LASER HYBRIDE FIBRE GUIDE ACCORDABLE ELECTRO OPTIQUEMENT written by NAWFEL.. AZAMI and published by . This book was released on 1998 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ACCORDABILITE DE LA LONGUEUR D'ONDE DU LASER A FIBRE OPTIQUE DOPEE ERBIUM A L'AIDE D'UN INTERFEROMETRE DE TYPE MACH-ZEHNDER INTEGRE SUR UN SUBSTRAT DE NIOBATE DE LITHIUM (LINBO 3) CONJUGUE LES TALENTS RESPECTIFS DE L'AMPLIFICATEUR A FIBRE DOPEE ERBIUM ET DE L'OPTIQUE INTEGREE SUR LINBO 3. LES FORTS GAINS ATTEINTS PAR LA FIBRE DOPEE ERBIUM AJOUTES A UN COEFFICIENT ELECTRO-OPTIQUE DU NIOBATE DE LITHIUM DES PLUS ELEVES DEMONTRENT UNE ACCORDABILITE SPECTRALE CONTINUE DE 24 NM DE LA LONGUEUR D'ONDE LASER DANS LA TROISIEME FENETRE DES TELECOMMUNICATIONS OPTIQUE POUR DES TENSIONS VARIANT ENTRE 0 ET 7 VOLTS. LE LASER EST CARACTERISE PAR UN FAIBLE SEUIL D'OSCILLATION DE 5 MW DE PUISSANCE POMPE COUPLEE A 980 NM ET PAR UN RENDEMENT DE 4%. LES PROPRIETES POLARIMETRIQUES DE LA FIBRE LASER ASSOCIEE A UN OU DEUX POLARISEURS INTRACAVITES PERMETTENT, PAR UNE CONFIGURATION LASER ET UNE BIREFRINGENCE ADEQUATES, D'ACCORDER MECANIQUEMENT LA LONGUEUR D'ONDE LASER DE LA FIBRE DOPEE ERBIUM SUR UNE PLAGE SPECTRALE DE 28 NM AUTOUR DE 1550 NM PAR ROTATION DE LA LAME QUART D'ONDE D'UN CONTROLEUR DE POLARISATION A FIBRE INTRACAVITE. LE LASER EST CARACTERISE PAR UN SEUIL D'OSCILLATION DE 4MW DE PUISSANCE POMPE COUPLEE A 980 NM ET UN RENDEMENT DE 20%. L'ASSOCIATION DES DEUX EFFETS DE FILTRAGE, INTERFEROMETRIQUE ACCORDABLE ELECTRO-OPTIQUEMENT A L'AIDE D'UN INTERFEROMETRE DE MACH-ZEHNDER FABRIQUE PAR ECHANGE PROTONIQUE ET POLARIMETRIQUE, DEMONTRE L'ACCORDABILITE ELECTRO-OPTIQUE DU LASER A FIBRE DOPEE ERBIUM DANS UNE PLAGE SPECTRALE DE 30 NM AUTOUR DE 1550 NM POUR DES TENSIONS VARIANT ENTRE 11 ET +7 VOLTS ET POUR DEUX POSITIONS DIFFERENTES DE LA LAME QUART D'ONDE DU CONTROLEUR DE POLARISATION A FIBRE. LE LASER EST CARACTERISE PAR UN SEUIL DE 5 MW DE PUISSANCE POMPE COUPLEE A 980 NM ET UN RENDEMENT DE 5%.
Download or read book Nanocellulose written by Jin Huang and published by John Wiley & Sons. This book was released on 2019-08-05 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensively introduces readers to the production, modifications, and applications of nanocellulose This book gives a thorough introduction to the structure, properties, surface modification, theory, mechanism of composites, and functional materials derived from nanocellulose. It also provides in-depth descriptions of plastics, composites, and functional nanomaterials specifically derived from cellulose nanocrystals, cellulose nanofibrils, and bacterial cellulose. It includes the most recent progress in developing a conceptual framework of nanocellulose, as well as its numerous applications in the design and manufacture of nanocomposites and functional nanomaterials. The book also looks at the relationship between structure and properties. Featuring contributions from many noted experts in the field, Nanocellulose: From Fundamentals to Advanced Materials examines the current status of nanocomposites based on nanocelluloses. It covers surface modification of nanocellulose in the nanocomposites development; reinforcing mechanism of cellulose nanocrystals in nanocomposites; and advanced materials based on self-organization of cellulose nanocrystals. The book studies the role of cellulose nanofibrils in nanocomposites, as well as a potential application based on colloidal properties of cellulose nanocrystals. It also offers strategies to explore biomedical applications of nanocellulose. Provides comprehensive knowledge on the topic of nanocellulose, including the preparation, structure, properties, surface modification and strategy Covers new reports on the application of nanocellulose Summarizes three kinds of nanocellulose (cellulose nanocrystals, cellulose nanofibrils, and bacterial cellulose) and their production, modification, and applications Nanocellulose: From Fundamentals to Advanced Materials is a useful resource for specialist researchers of chemistry, materials, and nanotechnology science, as well as for researchers and students of the subject.
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 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.
Download or read book Polysaccharide Based Nanocrystals written by Jin Huang and published by John Wiley & Sons. This book was released on 2015-03-09 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polysaccharide nanocrystals, an emerging green nanoingredient (nanomaterial) with high crystallinity obtained by acid hydrolysis of biomass-based polysaccharides, are of scientific and economic significance owing to their abundance, biodegradation potential, and fascinating functional performance. This versatile class of materials can be used in nanocomposites such as rubber or polyester, and in functional materials such as drug carriers, bio-inspired mechanically adaptive materials or membranes, to name but a few. This book encompasses the extraction, structure, properties, surface modification, theory, and mechanism of diverse functional systems derived from polysaccharide nanocrystals. This highly sought-after trendy book is currently the only monograph devoted to the most current knowledge pertaining to this exciting subject area. It is ideal for researchers and stakeholders who wish to broaden and deepen their knowledge in the fast-moving and rapidly expanding R&D field of polymeric materials.
Download or read book MIMO written by Alain Sibille and published by Academic Press. This book was released on 2010-12-03 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foreword from Arogyaswami Paulraj, Professor (Emeritus), Stanford University (USA) - The first book to show how MIMO principles can be implemented in today's mobile broadband networks and components - Explains and solves some of the practical difficulties that arise in designing and implementing MIMO systems - Both theory and implementation sections are written in the context of the most recent standards: IEEE 802.11n (WiFi); IEEE 802.16 (WIMAX); 4G networks (3GPP/3GPP2, LTE)
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 Avalanche Transit time Devices written by George I. Haddad and published by Modern Frontiers in Applied Sc. This book was released on 1973 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Governance Regulation and Powers on the Internet written by Eric Brousseau and published by Cambridge University Press. This book was released on 2012-04-23 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: An interdisciplinary survey of the issues surrounding the governance of the Internet.
Download or read book Pervasive Mobile and Ambient Wireless Communications written by Roberto Verdone and published by Springer Science & Business Media. This book was released on 2012-01-02 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reporting the findings of COST 2100, a major European intergovernmental project, this volume offers system designers a good source of guidelines based on channel characterization and measurement-based modeling, as well as worthwhile ideas for future research.
Download or read book Automatic Flight Control Systems written by Margaret Ziegler and published by . This book was released on 2015-02-25 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The history of flight control cannot be considered separately to the history of aviation. Since the early days, the conception of automatic flight control systems has advanced from mechanical control systems to greatly developed automatic fly-by-wire flight control systems which can be found in military jets and civil airliners these days. Even today, several research attempts are made for the further advancement of these flight control systems in numerous aspects. Current advancements in this area target a variety of different aspects. This book presents a collection of knowledge on important research areas, like inertial navigation, handling of unmanned airplanes and helicopters, trajectory control of an unmanned space re-entry automobile, aeroservoelastic control, modifying flight control, and error tolerant flight control. It discusses theoretical outlook and current conceptual advancements in flight control systems along with describing theories of modified and fault-tolerant flight control systems. Each technique has been elaborated using illustrations and appropriate examples.
Download or read book IPB written by and published by . This book was released on 1983 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Unsteady Transonic Flow written by Mårten T. Landahl and published by Courier Dover Publications. This book was released on 2019-04-17 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: This classic monograph on unsteady transonic flow — the flow of air encountered at speeds at or near the speed of sound — is of continuing interest to students and professionals in aerodynamics, fluid dynamics, and other areas of applied mathematics. After a brief Introduction, Swedish physicist Mårten T. Landahl presents a chapter in which the two-dimensional solution is derived, succeeded by a discussion of its relation to the subsonic and supersonic solutions. Three chapters on low aspect ratio configurations follow, covering triangular wings and similar planforms with curved leading edges, rectangular wings, and cropped delta wings, and low aspect ratio wing-body combinations. The treatment concludes with a consideration of the experimental determination of air forces on oscillating wings at transonic speeds.
Download or read book Green Networking written by Francine Krief and published by John Wiley & Sons. This book was released on 2012-12-13 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on green networking, which is an important topic for the scientific community composed of engineers, academics, researchers and industrialists working in the networking field. Reducing the environmental impact of the communications infrastructure has become essential with the ever increasing cost of energy and the need for reducing global CO2 emissions to protect our environment. Recent advances and future directions in green networking are presented in this book, including energy efficient networks (wired networks, wireless networks, mobile networks), adaptive networks (cognitive radio networks, green autonomic networking), green terminals, and industrial research into green networking (smart city, etc.).
Download or read book Cellulose Nanoparticles written by Vijay Kumar Thakur and published by . This book was released on 2021-07-09 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-volume set covers Cellulose Nanoparticles: Chemistry and Fundamentals and Cellulose Nanoparticles: Synthesis and Manufacturing. These books form a useful reference work for graduate students and researchers in chemistry, materials science, nanoscience and green nanotechnology.
