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Lasers A Centres Colores Pompes Par Diodes Lasers
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Book Synopsis LASERS A CENTRES COLORES POMPES PAR DIODES LASERS by : KHALED.. MAZIGHI
Download or read book LASERS A CENTRES COLORES POMPES PAR DIODES LASERS written by KHALED.. MAZIGHI and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: L'AMELIORATION D'UN LASER A CENTRES COLORES UTILISANT LE FLUORURE DE SODIUM DOPE AU MAGNESIUM POMPE PAR UNE DIODE LASER DE PUISSANCE, A ETE ACCOMPLIE. CE LASER DELIVRE ACTUELLEMENT 35 MILLIWATTS EN EMISSION CONTINUE SOUS 480 MILLIWATTS DE POMPE POUR UN MIROIR DE SORTIE DE 4 POURCENT DE TRANSMISSION, ET PEUT ETRE ACCORDE ENTRE 1009 ET 1175 NANOMETRES POUR UNE TRANSMISSION DE 0,5% DE SON MIROIR DE SORTIE; LES CENTRES ACTIFS NE SONT PAS SEVEREMENT BLANCHIS PAR CE MODE DE POMPAGE. LE BLOCAGE DES MODES LONGITUDINAUX DE CE LASER A ETE REALISE PAR DEUX METHODES SIMPLES QUI NE NECESSITENT L'INTRODUCTION D'AUCUN ELEMENT INTRACAVITE. L'UNE CONSISTE A MODULER ELECTRIQUEMENT LA DIODE LASER PAR UN SIGNAL SINUSOIDAL HAUTE FREQUENCE D'ORIGINE EXTERNE, ET L'AUTRE UTILISE UN SYSTEME DE BOUCLE DE REACTION OPTO-ELECTRONIQUE OU UNE FRACTION DE LA LUMIERE EMISE SERT A ASSERVIR LA DIODE LASER DE POMPE. UN LASER A CENTRES COLORES UTILISANT LE BROMURE DE POTASSIUM DOPE A L'OXYGENE EMETTANT VERS 2 MICROMETRES A ETE CONSTRUIT ET MISE EN UVRE AVEC POUR SOURCE DE POMPAGE UN AUTRE LASER A CENTRES COLORES. C'EST UNE PREMIERE ETAPE DE LA REALISATION D'UN LASER A CENTRES COLORES, POMPE PAR UNE DIODE LASER PULSEE A 1,55 MICROMETRES
Book Synopsis LASERS A CENTRES COLORES POMPES PAR UN FLASH OU PAR UNE DIODE LASER by : Jean-Louis Doualan
Download or read book LASERS A CENTRES COLORES POMPES PAR UN FLASH OU PAR UNE DIODE LASER written by Jean-Louis Doualan and published by . This book was released on 1988 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: UN LASER UTILISANT UNE LAMPE FLASH A ETE CONSTRUIT. IL FONCTIONNE AVEC LES CENTRES F::(2)**(+) DANS LIF A 77 K, F::(2)**(+) DANS NAF ET (F::(2)**(+))::(A) DANS NAF:LI**(+) A TEMPERATURE AMBIANTE. NOUS AVONS ETUDIE LES CARACTERISTIQUES LASERS. L'ETUDE A ETE POUSSEE PLUS LOIN POUR LE CENTRE F::(2)**(+) DANS LIF AVEC DES MESURES SUR LES EFFETS D'ECHAUFFEMENT, LE GAIN ET LES PERTES DANS LE MATERIAU. POUR LA PREMIERE FOIS NOUS AVONS UTILISE UNE DIODE LASER POUR POMPER DES CENTRES COLORES. LE LASER AINSI OBTENU EST PEU ENCOMBRANT ET MOINS ONEREUX QUE LE POMPAGE PAR DEUX LASERS EN TANDEM NECESSAIRE POUR LE POMPAGE DES CENTRES (F::(2)**(+))**(*) DANS NAF:MG**(2+). L'EMISSION CONTINUE A 77 K EST ACCORDABLE ENTRE 1,03 ET 1,12 MU M, LA PUISSANCE MAXIMUM EST DE 8,1 MW POUR 400 MW DE POMPE
Book Synopsis POMPAGE PAR DIODE LASER DE LASERS A CENTRES COLORES EMETTANT AU VOISINAGE DE 1,5M by : ADAMA.. KONATE
Download or read book POMPAGE PAR DIODE LASER DE LASERS A CENTRES COLORES EMETTANT AU VOISINAGE DE 1,5M written by ADAMA.. KONATE and published by . This book was released on 1995 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: NOUS AVONS ETENDU LE DOMAINE SPECTRAL COUVERT PAR LES LASERS A CENTRES COLORES (LCC) POMPES PAR DIODE LASER EN UTILISANT DEUX DIODES LASER EMETTANT RESPECTIVEMENT A 962 ET 993NM POUR EXCITER LES CENTRES TL (1) DANS KCL:TL#+ ET NACL:TL#+ ET LES CENTRES (F#2#+)#H DANS NACL:OH#-. AVEC KCL:TL#+ L'EMISSION EST ACCORDABLE DE 1488 A 1542NM, AVEC NACL:TL#+ DE 1493 A 1540NM. LE LASER A CENTRES (F#2#+)#H DANS NACL:OH#- EST PLUS PERFORMANT. AVEC 695MW DE LA DIODE A 993NM, NOUS OBTENONS 25MW ET UNE LARGE PLAGE D'ACCORD ALLANT DE 1480 A 1680NM. CES DIFFERENTS LASERS PEUVENT SERVIR, PAR EXEMPLE, A DES MESURES SPECTROSCOPIQUES SUR DES MATERIAUX LASER DOPES AVEC DES IONS TERRES RARES. L'EMISSION DES CENTRES (F#2#+)#H EST LIMITEE PAR DES PHENOMENES DE REORIENTATION CAUSES PAR L'INTENSE LUMIERE DE POMPAGE. NOUS AVONS SYSTEMATIQUEMENT EXAMINE CET EFFET, AINSI QUE LA FACON DE LE COMBATTRE PAR UNE LUMIERE AUXILIAIRE, DITE DE REGENERATION. CETTE ETUDE A ETE FAITE D'UNE PART DE FACON PUREMENT SPECTROSCOPIQUE ET D'AUTRE PART EN ETUDIANT L'EMISSION D'UN LCC POMPE SOIT PAR UNE DIODE LASER, SOIT, PAR UN LASER ND:YAG. NOUS AVONS MONTRE QU'A COTE DE LA REORIENTATION DES CENTRES (F#2#+)#H PAR LA LUMIERE DE POMPE INTERVIENT UNE DESTRUCTION DE CES MEMES CENTRES, HEUREUSEMENT ENTIEREMENT RENVERSABLE SOUS L'EFFET DE LA LUMIERE AUXILIAIRE. ENFIN, NOUS AVONS OBTENU, POUR LA PREMIERE FOIS, L'EMISSION LASER CONTINUE ACCORDABLE DE LA VARIETE A (ET NON PLUS B) DES CENTRES (F#2#+)#H DANS NACL:OH#-(A 30K, EN POMPANT PAR UN LASER ND:YAG)
Author :Kenneth James Teegarden Publisher :SPIE-International Society for Optical Engineering ISBN 13 : Total Pages :586 pages Book Rating :4.:/5 (318 download)
Book Synopsis Selected Papers on Color-center Lasers by : Kenneth James Teegarden
Download or read book Selected Papers on Color-center Lasers written by Kenneth James Teegarden and published by SPIE-International Society for Optical Engineering. This book was released on 2003 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of papers dealing with the colour-center laser. The first section deals with fundamental research that preceded the colour-center laser, the second covers the discovery and development of several types of laser and the final section contains examples of applications of the laser.
Book Synopsis Lasers à centres colorés dans les domaines by : Denis Mounier
Download or read book Lasers à centres colorés dans les domaines written by Denis Mounier and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Le pompage par un flash à xénon de deux lasers à centres colorés a été réalisé. Il s'agit des centres (F#2#+)* de NAF : MG#2#+ et (F#2#+)#H de NACL:OH#. Ces deux lasers peuvent fonctionner à température ambiante: leur émission se fait alors dans les domaines 1,05-1,27 M pour (F#2#+)* et 1,52-1,76 M pour (F#2#+)#H. Des impulsions laser de 10 S et de plusieurs MJ, pour 10J d'énergie électrique de pompe, ont été obtenus. Les centres (F#2#+)* sont sévèrement blanchis par la lumière du flash mais ils peuvent néanmoins délivrer plus de 100.000 impulsions à 300 K. Leur endurance n'apparaît pas nettement améliorée lorsqu'on abaisse la température du cristal à 77 K. Quant aux centres (F#2#+)#H, leur endurance aux coups de flash répétés est meilleure que celle des centres (F#2#+)* dès que la température du cristal est inférieure a 0C.
Book Synopsis Material für Predigten über kath. Jugendfürsorge by :
Download or read book Material für Predigten über kath. Jugendfürsorge written by and published by . This book was released on 1930 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal de physique, théorique et appliquée by :
Download or read book Journal de physique, théorique et appliquée written by and published by . This book was released on 1985 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pulsed Laser Ablation of Solids by : Mihai Stafe
Download or read book Pulsed Laser Ablation of Solids written by Mihai Stafe and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book introduces ‘the state of the art' of pulsed laser ablation and its applications. It is based on recent theoretical and experimental studies. The book reaches from the basics to advanced topics of pulsed laser ablation. Theoretical and experimental fundamental phenomena involved in pulsed laser ablation are discussed with respect to material properties, laser wavelength, fluence and intensity regime of the light absorbed linearly or non-linearly in the target material. The energy absorbed by the electrons leads to atom/molecule excitation, ionization and/or direct chemical bond breaking and is also transferred to the lattice leading to material heating and phase transitions. Experimental non-invasive optical methods for analyzing these phenomena in real time are described. Theoretical models for pulsed laser ablation and phase transitions induced by laser beams and laser-vapour/plasma interaction during the plume expansion above the target are also presented. Calculations of the ablation speed and dimensions of the ablated micro- and nano-structures are performed. The validity and required refinement of different models in different experimental conditions is provided. The pulsed laser deposition process which bases on collecting the ablated particles on a surface is analyzed in terms of efficiency and quality of the deposited films as a function of ambient conditions, target material, laser parameters and substrate characteristics. The interaction between the incident laser and the ablation plasma is analyzed with respect to its influence on the structures of the deposited films and its capacity to generate high harmonics and single attosecond pulses which are highly desirable in pump-probe experiments.
Book Synopsis Atoms, Solids, and Plasmas in Super-Intense Laser Fields by : Dimitri Batani
Download or read book Atoms, Solids, and Plasmas in Super-Intense Laser Fields written by Dimitri Batani and published by Springer Science & Business Media. This book was released on 2001-09-30 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 30th Course of the International School of Quantum Electronics on Atoms, Solids and Plasmas in Super-Intense Laser Fields, held 8-14 July, in Erice, Sicily
Book Synopsis Physics and Engineering of New Materials by : Do Tran Cat
Download or read book Physics and Engineering of New Materials written by Do Tran Cat and published by Springer Science & Business Media. This book was released on 2009-01-01 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the majority of the contributions to the Tenth German-Vietnamese Seminar on Physics and Engineering (GVS10) that took place in the Gustav- Stresemann-Institut (GSI) in Bonn from June 6 to June 9, 2007. In the focus of these studies are the preparation and basic properties of new material systems, related investigation methods, and practical applications. Accordingly the sections in this book are entitled electrons: transport and confinement, low-dimensional systems, magnetism, oxidic materials, organic films, new materials, and methods. The series of German-Vietnamese seminars was initiated and sponsored by the Gottlieb Daimler- and Karl Benz -Foundation since 1998 and took place alt- nately in both countries. These bilateral meetings brought together top-notch senior and junior Vietnamese scientists with German Scientists and stimulated many contacts and co-operations. Under the general title “Physics and Engine- ing” the programs covered, in the form of keynote-lectures, oral presentations and posters, experimental and theoretical cutting-edge material-physics oriented topics. The majority of the contributions was dealing with modern topics of material science, particularly nanoscience, which is a research field of high importance also in Vietnam. Modern material science allows a quick transfer of research results to technical applications, which is very useful for fast developing countries like Vietnam. On the other hand, the seminars took profit from the strong cro- fertilization of the different disciplines of physics. This book is dedicated to the tenth anniversary of the seminars and nicely shows the scientific progress in Vietnam and the competitive level reached.
Book Synopsis The Physics of Ultra-High-Density Magnetic Recording by : M.L. Plumer
Download or read book The Physics of Ultra-High-Density Magnetic Recording written by M.L. Plumer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Application-oriented book on magnetic recording, focussing on the underlying physical mechanisms that play crucial roles in medium and transducer development for high areal density disk drives.
Book Synopsis Advanced Techniques for Surface Engineering by : W. Gissler
Download or read book Advanced Techniques for Surface Engineering written by W. Gissler and published by Springer Science & Business Media. This book was released on 1992-10-31 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hardest requirements on a material are in general imposed at the surface: it has to be wear resistant for tools and bearings; corrosion resistant for turbine blades; antireflecting for solar cells; and it must combine several of these properties in other applications. `Surface engineering' is the general term that incorporates all the techniques by which a surface modification can be accomplished. These techniques include both the more traditional methods, such as nitriding, boriding and carburizing, and the newer ones, such as ion implantation, laser beam melting and, in particular, coating. This book comprises and compares in a unique way all these techniques of surface engineering. It is a compilation of lectures which were held by renowned scientists and engineers in the frame of the well known `EuroCourses' of the Joint Research Centre of the Commission of the European Communities. The book is principally addressed to material and surface scientists, physicists and chemists, engineers and technicians of industries and institutes where surface engineering problems arise.
Book Synopsis Advanced Cosmetic Otoplasty by : Melvin A. Shiffman
Download or read book Advanced Cosmetic Otoplasty written by Melvin A. Shiffman and published by Springer Science & Business Media. This book was released on 2013-07-05 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, international experts present up-to-date techniques of otoplasty in which they have extensive personal experience. Both new and modified procedures are described with the aid of a wealth of high-quality illustrations. In addition to these detailed descriptions, ear embryology and anatomy, psychological issues, postoperative care, possible risks and complications, and outcomes are extensively covered in order to provide the reader with a state of the art account of all aspects of cosmetic otoplasty. Throughout, the contributors are inventive and eloquent in guiding the reader to a better understanding that optimal results of otoplasty will be achieved only with a more refined approach than the routine use of simplified techniques. This book will be of value to both students (residents and fellows) and experienced cosmetic, plastic, maxillofacial, and general surgeons.
Download or read book Digital Mammography written by Peter Hogg and published by Springer. This book was released on 2015-02-17 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a single publication to be utilised comprehensively as a reference manual within current mammographic clinical practice for use by assistant practitioners and practitioners as well as trainees in radiography and related disciplines. In recent years mammographic clinical practice and technology have evolved rapidly and become increasingly sophisticated, this book will cover these issues. The public feel increasingly empowered to ‘have a say’ in their care and expectations of their mammography experience is high. Consequently a well-trained, well-informed practitioner is of paramount importance in clinical practice today. This book addresses patient/client-related issues in the form of psychological and emotional support they may require. This will enable the reader to gain insight into the patient/client perspective and thereby assist in meeting their needs.
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.
Author :Radislav A. Potyrailo Publisher :Springer Science & Business Media ISBN 13 :0387737138 Total Pages :495 pages Book Rating :4.3/5 (877 download)
Book Synopsis Combinatorial Methods for Chemical and Biological Sensors by : Radislav A. Potyrailo
Download or read book Combinatorial Methods for Chemical and Biological Sensors written by Radislav A. Potyrailo and published by Springer Science & Business Media. This book was released on 2009-03-21 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical sensors are in high demand for applications as varied as water pollution detection, medical diagnostics, and battlefield air analysis. Designing the next generation of sensors requires an interdisciplinary approach. The book provides a critical analysis of new opportunities in sensor materials research that have been opened up with the use of combinatorial and high-throughput technologies, with emphasis on experimental techniques. For a view of component selection with a more computational perspective, readers may refer to the complementary volume of Integrated Analytical Systems edited by M. Ryan et al., entitled “Computational Methods for Sensor Material Selection”.
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.
