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Author: Sooraj Hussain Nandyala
Publisher: Trans Tech Publications Ltd
Published: 2008-08-30
Total Pages: 300
ISBN-13: 303813242X
DOWNLOAD EBOOKThe aim of this work is to review the latest developments in glass science and technology. It presents various types of glass, of both academic and technological importance, in which the host is doped with rare-earth ions.
Author: Guokui Liu
Publisher: Springer Science & Business Media
Published: 2005-06-29
Total Pages: 576
ISBN-13: 9783540238867
DOWNLOAD EBOOKAimed at researchers and graduate students, this book provides up-to-date information for understanding electronic interactions that impact the optical properties of rare earth ions in solids. Its goal is to establish a connection between fundamental principles and the materials properties of rare-earth activated luminescent and laser optical materials. The theoretical survey and introduction to spectroscopic properties include electronic energy level structure, intensities of optical transitions, ion-phonon interactions, line broadening, and energy transfer and up-conversion. An important aspect of the book lies in its deep and detailed discussions on materials properties and the potential of new applications such as optical storage, information processing, nanophotonics, and molecular probes that have been identified in recent experimental studies. This volume will be a valuable reference book on advanced topics of rare earth spectroscopy and materials science.
Author:
Publisher: Elsevier
Published: 2014-07-10
Total Pages: 373
ISBN-13: 0444633308
DOWNLOAD EBOOKThe Handbook on the Physics and Chemistry of Rare Earths is an ongoing series covering all aspects of rare earth science—chemistry, life sciences, materials science, and physics. The main emphasis of the Handbook is on rare earth elements [Sc, Y and the lanthanides (La through Lu)] but information is also included, whenever relevant, on the closely related actinide elements. The individual chapters are comprehensive, broad, up-to-date critical reviews written by highly experienced invited experts. The series, which was started in 1978 by Professor Karl A. Gschneidner Jr., combines and integrates both the fundamentals and applications of these elements and now publishes two volumes a year. Individual chapters are comprehensive, broad, critical reviews Contributions are written by highly experienced, invited experts Up-to-date overviews of developments in the field
Author: James Edgar Phillips
Publisher:
Published: 2005
Total Pages: 316
ISBN-13:
DOWNLOAD EBOOKAuthor: Pramod Kothari
Publisher: LAP Lambert Academic Publishing
Published: 2014-10-01
Total Pages: 92
ISBN-13: 9783659630217
DOWNLOAD EBOOKGlass is the most important substrate material suitable for fabrication of passive and active integrated optical components. The refractive index of a glass substrate is very close to that of the optical fibers (n=1.48), which minimizes the coupling losses between glass waveguides and optical fibers. Glass has excellent transparency in the visible and near infrared spectral regions and can easily be made in different sizes and shapes with very high homogeneity. As an amorphous material distinct from crystals, it is easier to produce polarization insensitive integrated optical components in glass. In addition, Glass has a high threshold to optical damage; it is mechanically very rigid and relatively inexpensive. Glass is also suitable host for rare earth ions. This has allowed for the fabrication of optical amplifiers and lasers.
Author:
Publisher:
Published: 1965
Total Pages: 462
ISBN-13:
DOWNLOAD EBOOKAuthor: Jacques Lucas
Publisher: Elsevier
Published: 2014-09-09
Total Pages: 407
ISBN-13: 0444627448
DOWNLOAD EBOOKHigh-technology and environmental applications of the rare-earth elements (REE) have grown dramatically in diversity and importance over the past four decades. This book provides a scientific understanding of rare earth properties and uses, present and future. It also points the way to efficient recycle of the rare earths in end-of-use products and efficient use of rare earths in new products. Scientists and students will appreciate the book's approach to the availability, structure and properties of rare earths and how they have led to myriad critical uses, present and future. Experts should buy this book to get an integrated picture of production and use (present and future) of rare earths and the science behind this picture. This book will prove valuable to.non-scientists as well in order to get an integrated picture of production and use of rare earths in the 21st Century, and the science behind this picture. Defines the chemical, physical and structural properties of rare earths. Gives the reader a basic understanding of what rare earths can do for us. Describes uses of each rare earth with chemical, physics, and structural explanations for the properties that underlie those uses. Allows the reader to understand how rare earths behave and why they are used in present applications and will be used in future applications. Explains to the reader where and how rare earths are found and produced and how they are best recycled to minimize environmental impact and energy and water consumption.
Author:
Publisher:
Published: 2014
Total Pages: 180
ISBN-13:
DOWNLOAD EBOOKAuthor: Herbert G. Lipson
Publisher:
Published: 1970
Total Pages: 80
ISBN-13:
DOWNLOAD EBOOKAbsorption spectra were used to determine the effect of modifier ions on the splitting and relative intensity of neodymium spectral terms in germanate and other glasses. The behavior of spectral components is related to the degree of inhomogeneous broadening and changes in the site symmetry of the neodymium ion. A similarity between the wavelength position of neodymium term levels and their total width in glasses and crystalline neodymium oxide has been observed. Fluorescence spectra for neodymium, erbium, and holmium ions in sodium germanate glass are reported and the absorption lines involved in excitation with both lamp and laser sources discussed. The lines of an argon-ion laser are found to be more convenient and powerful sources for the excitation of rare earth ion fluorescence than mercury vapor or tungsten lamp sources. The energy level diagram of neodymium in sodium germanate glass was determined from absorption and fluorescence peak spectra. A relationship between the strength of infrared absorption bands involved in cross-relaxation processes and the extent of neodymium fluorescence quenching was observed. Fluorescence conversion efficiencies comparable or higher than those of commercial laser glasses are found for neodymium in sodium germanate glass by both laser and lamp excitation methods. Germanate glasses show good potential as laser hosts for a number of rare earth ions. (Author).
Author: J.E. Shelby
Publisher: Trans Tech Publications Ltd
Published: 1994-02-02
Total Pages: 428
ISBN-13: 3035703469
DOWNLOAD EBOOKThe rapid expansion of glasses as the materials of choice for optical, electronic, and other applications has led to a radical expansion in the use of the 75 or so elements not extensively employed in traditional glasses, i.e. the "rare elements in glasses" indicated by the title of this volume. Although some of these elements are not "rare" in the sense of availability, they are indeed rarely used historically in inorganic glasses.
