Download or read book The Picosecond Transient Grating Technique written by José Ribera Salcedo and published by . This book was released on 1979 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Picosecond Transient Grating Studies of Interfacial Charge Transfer at N type and P type Si 100 Liquid Junctions written by Carl Emery Bonner (Jr) and published by . This book was released on 1995 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of the Photoacoustic Effect in Micellar Solutions by the Picosecond Transient Grating Method written by Yanni Cao and published by . This book was released on 1997 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Transient Grating Measurements of Micro nanoscale Thermal Transport and Mechanical Properties written by Jeffrey Kristian Eliason and published by . This book was released on 2015 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: The laser-based transient grating technique was used to study phonon mediated thermal transport in bulk and nanostructured semiconductors and surface wave propagation in a monolayer of micron sized spheres. In the transient grating technique two picosecond pulses are crossed to generate a spatially periodic intensity profile. The spatially periodic profile generates a material excitation with a well-defined wave vector. The time dependence of the spatially periodic material response is measured by monitoring the diffracted signal of an incident probe beam. Non-diffusive thermal transport was observed in thin Si membranes as well as bulk GaAs at relatively short (micron) transient grating periods. First-principles calculations of the phonon mean free paths in Si and GaAs were compared with experimental results and showed good agreement. Preliminary measurements on promising thermoelectric materials such as PbTe and Bi2Te3 are presented showing evidence of non-diffusive transport at short length scales. The transient grating technique was used to measure the thermal conductivity of Si membranes with thickness ranging from 15 nm to 1518 nm. Using the Fuchs-Sondheimer suppression function along with first-principles results, the thermal conductivity as a function of membrane thickness was calculated. The calculations showed excellent agreement with experimental measurements. A convex optimization algorithm was employed to reconstruct the phonon mean free path distribution from experimental measurements. This marks the first experimental determination of the mean free path distribution for a bulk material. Thermal conductivity measurements at low temperatures in a 200 nm Si membrane indicate the breakdown of the diffuse boundary scattering approximation. The transient grating technique was used to generate surface acoustic waves and measure their dispersion in a monolayer of 0.5 - 1 [mu]m diameter silica spheres. The measured dispersion curves show "avoided crossing" behavior due to the interaction between an axial contact resonance of the microspheres and the surface acoustic wave at a frequency of -200MHz for the 1 [mu]m spheres and -700 MHz for the 0.5 [m spheres. The experimental measurements were fit with an analytical model in which the contact stiffness was the only fitting parameter. Preliminary results of surface acoustic wave propagation in microsphere waveguides, transmission through a microsphere strip, and evidence of a nonlinear response in a 2D array of microspheres are presented.
Download or read book Picosecond and Femtosecond Time resolved Four wave Mixing in Condensed Phase Systems written by Vincent John Newell and published by . This book was released on 1989 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Femtochemistry Ultrafast Chemical And Physical Processes In Molecular Systems written by Majed Chergui and published by World Scientific. This book was released on 1996-04-30 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the latest experimental and theoretical developments in the field of femtochemistry, with papers describing the physics and chemistry of ultrafast processes in small molecules, complex molecular systems, clusters, biological systems, solids, matrices, liquids and at surfaces and interfaces. The recent developments in frequency-domain studies of femtodynamics are also presented. In addition, the latest achievements in femtosecond control of chemical reactions are presented, together with the newest techniques in real-time probing of reactions such as ultrafast x-ray or electron diffraction. The papers are rich in references giving a clearcut state-of-the-art of the topics being discussed. The book should be a valuable tool to all persons in the field and to young scientists.Contributors include: A H Zewail, J Jortner, V S Letokhov, J Manz, R S Berry, C Wittig, K B Eisenthal, A W Castleman Jr., J T Hynes, W H Gadzuk, R Kosloff, S Mukamel, K R Wilson; G Fleming, D Wiersma, K Yoshihara, V Sundström, A Apkarian, N Scherer, A Myers, R Schinke, J R Huber, R B Gerber, G Gerber and P M Champion.
Download or read book Proceedings of the Symposium on Recent Advances in the Chemistry and Physics of Fullerenes and Related Materials written by Karl M. Kadish and published by The Electrochemical Society. This book was released on 1994 with total page 1784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modern Optical Spectroscopy written by William W. Parson and published by Springer. This book was released on 2015-06-09 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook offers clear explanations of optical spectroscopic phenomena and shows how spectroscopic techniques are used in modern molecular and cellular biophysics and biochemistry. The topics covered include electronic and vibrational absorption, fluorescence, resonance energy transfer, exciton interactions, circular dichroism, coherence and dephasing, ultrafast pump-probe and photon-echo spectroscopy, single-molecule and fluorescence-correlation spectroscopy, Raman scattering, and multiphoton absorption. This revised and updated edition provides expanded discussions of quantum optics, metal-ligand charge-transfer transitions, entropy changes during photoexcitation, electron transfer from excited molecules, normal-mode calculations, vibrational Stark effects, studies of fast processes by resonance energy transfer in single molecules, and two-dimensional electronic and vibrational spectroscopy. The explanations are sufficiently thorough and detailed to be useful for researchers and graduate students and advanced undergraduates in chemistry, biochemistry and biophysics. They are based on time-dependent quantum mechanics, but are developed from first principles with a clarity that makes them accessible to readers with little prior training in this field. Extra topics and highlights are featured in special boxes throughout the text. The author also provides helpful exercises for each chapter.
Download or read book Photonics written by Ralf Menzel and published by Springer Science & Business Media. This book was released on 2007-07-30 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shows how nonlinear phenomena play a more and more important role for everybody using the laser "as a tool," making it unique in this respect. Provides a basic knowledge of modern lasers, as well as the principles of nonlinear optical spectroscopy (and an exhaustive list of 4000 references) From first-edition reviews: "Almost a handbook, reviewing in a single author's voice the basic properties of light and its linear and nonlinear interactions with matter, both in the absence and in the presence of absorption." Physics Today
Download or read book Memory Functions Projection Operators and the Defect Technique written by V. M. (Nitant) Kenkre and published by Springer Nature. This book was released on 2021-04-13 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a graduate-level introduction to three powerful and closely related techniques in condensed matter physics: memory functions, projection operators, and the defect technique. Memory functions appear in the formalism of the generalized master equations that express the time evolution of probabilities via equations non-local in time, projection operators allow the extraction of parts of quantities, such as the diagonal parts of density matrices in statistical mechanics, and the defect technique allows solution of transport equations in which the translational invariance is broken in small regions, such as when crystals are doped with impurities. These three methods combined form an immensely useful toolkit for investigations in such disparate areas of physics as excitation in molecular crystals, sensitized luminescence, charge transport, non-equilibrium statistical physics, vibrational relaxation, granular materials, NMR, and even theoretical ecology. This book explains the three techniques and their interrelated nature, along with plenty of illustrative examples. Graduate students beginning to embark on a research project in condensed matter physics will find this book to be a most fruitful source of theoretical training.
Download or read book Picosecond Dynamics of Energy Transfer in Pure and Mixed Organic Crystals written by Dana Donald Dlott and published by . This book was released on 1979 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization Techniques and Tabulations for Organic Nonlinear Optical Materials written by Carl W. Dirk and published by Routledge. This book was released on 2018-05-11 with total page 914 pages. Available in PDF, EPUB and Kindle. Book excerpt: ""Furnishes table of nonlinear optical properties of organic substances as well as experimental procedures for measuring the nonlinearity of the elements tabulated, including composite materials-offering support for scientists and engineers involved in characterizing, optimizing, and producing materials for manufacturing optical devices.
Download or read book Physics of and Science with X Ray Free Electron Lasers written by J. Hastings and published by IOS Press. This book was released on 2020-12-18 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many X-Ray Free-Electron Lasers (X-FELs) have been designed, built and commissioned since the first lasing of the Linac Coherent Light Source in the hard and soft X-ray regions, and great progress has been made in improving their performance and extending their capabilities. Meanwhile, experimental techniques to exploit the unique properties of X-FELs to explore atomic and molecular systems of interest to physics, chemistry, biology and the material sciences have also been developed. As a result, our knowledge of atomic and molecular science has been greatly extended. Nevertheless, there is still much to be accomplished, and the potential for discovery with X-FELs is still largely unexplored. The next generation of scientists will need to be well versed in both particle beams/FEL physics and X-ray photon science. This book presents material from the Enrico Fermi summer school: Physics of and Science with X-Ray Free-Electron Lasers, held at the Enrico Fermi International School of Physics in Varenna, Italy, from 26 June - 1 July 2017. The lectures presented at the school were aimed at introducing graduate students and young scientists to this fast growing and exciting scientific area, and subjects covered include basic accelerator and FEL physics, as well as an introduction to the main research topics in X-FEL-based biology, atomic molecular optical science, material sciences, high-energy density physics and chemistry. Bridging the gap between accelerator/FEL physicists and scientists from other disciplines, the book will be of interest to all those working in the field.
Download or read book Semiconductors Probed by Ultrafast Laser Spectroscopy Pt I written by Robert R. Alfano and published by Elsevier. This book was released on 2012-12-02 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductors Probed by Ultrafast Laser Spectroscopy, Volume 1 discusses the use of ultrafast laser spectroscopy in studying fast physics in semiconductors. It reviews progress on the experimental and theoretical understanding of ultrafast events that occur on a picosecond and nanosecond time scale. This volume first explores the relaxation of energy and the momentum of hot carriers and then turns to relaxation of plasmas and phonons. It also discusses the dynamics of excitons, polaritons, and excitonic molecules and reviews transient transport and diffusion of carriers. Scientists, engineers, and graduate students will find this book invaluable.
Download or read book Treatise on Geophysics written by and published by Elsevier. This book was released on 2015-04-17 with total page 5604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Treatise on Geophysics, Second Edition, is a comprehensive and in-depth study of the physics of the Earth beyond what any geophysics text has provided previously. Thoroughly revised and updated, it provides fundamental and state-of-the-art discussion of all aspects of geophysics. A highlight of the second edition is a new volume on Near Surface Geophysics that discusses the role of geophysics in the exploitation and conservation of natural resources and the assessment of degradation of natural systems by pollution. Additional features include new material in the Planets and Moon, Mantle Dynamics, Core Dynamics, Crustal and Lithosphere Dynamics, Evolution of the Earth, and Geodesy volumes. New material is also presented on the uses of Earth gravity measurements. This title is essential for professionals, researchers, professors, and advanced undergraduate and graduate students in the fields of Geophysics and Earth system science. Comprehensive and detailed coverage of all aspects of geophysics Fundamental and state-of-the-art discussions of all research topics Integration of topics into a coherent whole
Download or read book Photorefractive Materials written by G. Roosen and published by Elsevier. This book was released on 2013-10-22 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers presented here reflect the core of the scientific activities that took place at the 1994 E-MRS conference. The contributions indicate that the field of photorefractive materials is advancing vigorously, moving into new classes of compounds, finding ways for the judicious tailoring of the microscopic properties of the materials - based on increased insight into the features of defects or quantum wells - and leading to new applications, often made possible by the advances at the forefront of the materials. The many papers presented by European participants emphasised the large amount of work being carried out here. Stimulating contributions also came from the United States and Japan, while papers presented by members from the industrial world indicate the importance of the field in this sector.
Download or read book Ultrafast Phenomena X written by Paul F. Barbara and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains papers presented at the Tenth International Conference on Ultrafast Phenomena held at Del Coronado, California, from May 28 to June 1, 1996. The biannual Ultrafast Phenomena Conferences provide a forum for the discussion of the latest advances in ultrafast optics and their applications in science and engineering. The Ultrafast Phenomena Conference maintains a broad international representation with 391 participants from 18 countries, including 94 students attending the conference. The multidisciplinary character of this meeting provides a cross-fertilization of ultrafast concepts and techniques among various scientific and engineering disciplines. The enthusiasm of the paticipants, the originality and quality of the papers that they presented, and the beautiful conference site combined to produce a very successful and enjoyable meeting. Progress was reported in the technology of generating ultrashort pulses, in cluding new techniques for improving laser-pulse duration, output power, wave length range, and compactness. Ultrafast spectroscopy continues to impact on and expand the knowledge base of fundamental processes in physics, chemistry, biol ogy and engineering. In addition ultrafast phenomena now extends to real-world applications in biology, high-speed communication, and material diagnostics. The Tenth Ultrafast Phenomena Conference was highlighted by a 'special event' in which the developments of the previous conferences were reviewed in a panel discussion by G. Mourou, E. Ippen, A. Migus, A. Laubereau and R. Hochstrasser.
