Download or read book Computational Modeling of Semiconductor Dynamics at Femtosecond Time Scales written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-30 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of the Joint-Research Interchange NCC2-5149 was to develop computer codes for accurate simulation of femtosecond pulse propagation in semiconductor lasers and semiconductor amplifiers [I]. The code should take into account all relevant processes such as the interband and intraband carrier relaxation mechanisms and the many-body effects arising from the Coulomb interaction among charge carriers [2]. This objective was fully accomplished. We made use of a previously developed algorithm developed at NASA Ames [3]-[5]. The new algorithm was tested on several problems of practical importance. One such problem was related to the amplification of femtosecond optical pulses in semiconductors. These results were presented in several international conferences over a period of three years. With the help of a postdoctoral fellow, we also investigated the origin of instabilities that can lead to the formation of femtosecond pulses in different kinds of lasers. We analyzed the occurrence of absolute instabilities in lasers that contain a dispersive host material with third-order nonlinearities. Starting from the Maxwell-Bloch equations, we derived general multimode equations to distinguish between convective and absolute instabilities. We find that both self-phase modulation and intensity-dependent absorption can dramatically affect the absolute stability of such lasers. In particular, the self-pulsing threshold (the so-called second laser threshold) can occur at few times the first laser threshold even in good-cavity lasers for which no self-pulsing occurs in the absence of intensity-dependent absorption. These results were presented in an international conference and published in the form of two papers. Agrawal, Govind P. and Goorjian, Peter M. Ames Research Center NCC2-5149; NSF PHY-94-15583...
Download or read book NASA University Program Management Information System FY 1995 written by and published by . This book was released on 1995 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computational Electronics written by Karl Hess and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large computational resources are of ever increasing importance for the simulation of semiconductor processes, devices and integrated circuits. The Workshop on Computational Electronics was intended to be a forum for the dis cussion of the state-of-the-art of device simulation. Three major research areas were covered: conventional simulations, based on the drift-diffusion and the hydrodynamic models; Monte Carlo methods and other techniques for the solution of the Boltzmann transport equation; and computational approaches to quantum transport which are relevant to novel devices based on quantum interference and resonant tunneling phenomena. Our goal was to bring together researchers from various disciplines that contribute to the advancement of device simulation. These include Computer Sci ence, Electrical Engineering, Applied Physics and Applied Mathematics. The suc cess of this multidisciplinary formula was proven by numerous interactions which took place at the Workshop and during the following three-day Short Course on Computational Electronics. The format of the course, including a number of tutorial lectures, and the large attendance of graduate students, stimulated many discussions and has proven to us once more the importance of cross-fertilization between the different disciplines.
Download or read book Atomic Scale Modeling of Nanosystems and Nanostructured Materials written by Carlo Massobrio and published by Springer Science & Business Media. This book was released on 2010-02-05 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book covers a variety of applications of modern atomic-scale modeling of materials in the area of nanoscience and nanostructured systems. By highlighting the most recent achievements obtained within a single institute, at the forefront of material science studies, the authors are able to provide a thorough description of properties at the nanoscale. The areas covered are structural determination, electronic excitation behaviors, clusters on surface morphology, spintronics and disordered materials. For each application, the basics of methodology are provided, allowing for a sound presentation of approaches such as density functional theory (of ground and excited states), electronic transport and molecular dynamics in its classical and first-principles forms. The book is a timely collection of theoretical nanoscience contributions fully in line with current experimental advances.
Download or read book Trends in Computational Nanomechanics written by Traian Dumitrica and published by Springer Science & Business Media. This book was released on 2010-03-14 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trends in Computational Nanomechanics reviews recent advances in analytical and computational modeling frameworks to describe the mechanics of materials on scales ranging from the atomistic, through the microstructure or transitional, and up to the continuum. The book presents new approaches in the theory of nanosystems, recent developments in theoretical and computational methods for studying problems in which multiple length and/or time scales must be simultaneously resolved, as well as example applications in nanomechanics. This title will be a useful tool of reference for professionals, graduates and undergraduates interested in Computational Chemistry and Physics, Materials Science, Nanotechnology.
Download or read book Computational Methods in Science and Engineering written by Gevorg Poghosyan and published by KIT Scientific Publishing. This book was released on 2014-08-22 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this proceedings volume we provide a compilation of article contributions equally covering applications from different research fields and ranging from capacity up to capability computing. Besides classical computing aspects such as parallelization, the focus of these proceedings is on multi-scale approaches and methods for tackling algorithm and data complexity. Also practical aspects regarding the usage of the HPC infrastructure and available tools and software at the SCC are presented.
Download or read book Fabless Semiconductor Manufacturing written by Chinmay K. Maiti and published by CRC Press. This book was released on 2022-11-17 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with 3D nanodevices such as nanowire and nanosheet transistors at 7 nm and smaller technology nodes. It discusses technology computer-aided design (TCAD) simulations of stress- and strain-engineered advanced semiconductor devices, including III-nitride and RF FDSOI CMOS, for flexible and stretchable electronics. The book focuses on how to set up 3D TCAD simulation tools, from mask layout to process and device simulation, including fabless intelligent manufacturing. The simulation examples chosen are from the most popular devices in use today and provide useful technology and device physics insights. In order to extend the role of TCAD in the More-than-Moore era, the design issues related to strain engineering for flexible and stretchable electronics have been introduced for the first time.
Download or read book Spectroscopy of Semiconductor Microstructures written by Gerhard Fasol and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a NATO ARW held in Venice, Italy, May 9-13, 1989
Download or read book Beyond the Molecular Frontier written by National Research Council and published by National Academies Press. This book was released on 2003-03-19 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemistry and chemical engineering have changed significantly in the last decade. They have broadened their scopeâ€"into biology, nanotechnology, materials science, computation, and advanced methods of process systems engineering and controlâ€"so much that the programs in most chemistry and chemical engineering departments now barely resemble the classical notion of chemistry. Beyond the Molecular Frontier brings together research, discovery, and invention across the entire spectrum of the chemical sciencesâ€"from fundamental, molecular-level chemistry to large-scale chemical processing technology. This reflects the way the field has evolved, the synergy at universities between research and education in chemistry and chemical engineering, and the way chemists and chemical engineers work together in industry. The astonishing developments in science and engineering during the 20th century have made it possible to dream of new goals that might previously have been considered unthinkable. This book identifies the key opportunities and challenges for the chemical sciences, from basic research to societal needs and from terrorism defense to environmental protection, and it looks at the ways in which chemists and chemical engineers can work together to contribute to an improved future.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Annealing Processes in Semiconductor Technology written by Fuccio Cristiano and published by Woodhead Publishing. This book was released on 2021-04-21 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser Annealing Processes in Semiconductor Technology: Theory, Modeling and Applications in Nanoelectronics synthesizes the scientific and technological advances of laser annealing processes for current and emerging nanotechnologies. The book provides an overview of the laser-matter interactions of materials and recent advances in modeling of laser-related phenomena, with the bulk of the book focusing on current and emerging (beyond-CMOS) applications. Reviewed applications include laser annealing of CMOS, group IV semiconductors, superconducting materials, photonic materials, 2D materials. This comprehensive book is ideal for post-graduate students, new entrants, and experienced researchers in academia, research and development in materials science, physics and engineering. - Introduces the fundamentals of laser materials and device fabrication methods, including laser-matter interactions and laser-related phenomena - Addresses advances in physical modeling and in predictive simulations of laser annealing processes such as atomistic modeling and TCAD simulations - Reviews current and emerging applications of laser annealing processes such as CMOS technology and group IV semiconductors
Download or read book Hot Carriers in Semiconductors written by J. Shah and published by Elsevier. This book was released on 2013-10-22 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive account of the latest developments in the rapidly expanding area of Semiconductor Technology. Main topics covered include real space transfer/heterostructures, ultrafast studies, optical studies, transport theory, devices, ballistic transport, scattering processes and hot phonons, tunnelling, far infrared and magnetic field studies and impact ionization/noise/chaos. Other aspects include the use of femtosecond lasers in investigating transient hot carrier effects on femtosecond timescales, magnetotransport and carrier-carrier interactions.
Download or read book Computational Electrodynamics written by Allen Taflove and published by Artech House Antenna Library a. This book was released on 1995 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work represents a university text and professional/research reference on the finite-difference time-domain computational solution method for Maxwell's equations. Sections cover numerical stability, numerical dispersion and dispersive, nonlinear and gain methods of FD-TD and antenna analysis.
Download or read book Academic Earmarks written by United States. Congress. House. Committee on Science, Space, and Technology and published by . This book was released on 1995 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Optics of Condensed Matter written by J. Birman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Third Binational USA-USSR Symposium titled "Laser Optics of Con densed Matter" was held in Leningrad 1 June - 5 June 1987. This volume con tains the full text of 64 papers presented at (or prepared for) the Symposium in both plenary and poster sessions. This Symposium reestablished the very productive series of "Light Scattering" Binational Symposia which were initi ated in Moscow in 1975. Unfortunately there was an eight-year hiatus follow ing the Second Symposium in New York (1979). This interval, caused by serious chilling of the climate of USA-USSR collaboration, deprived the active scien tists on both sides of the opportunity to meet and interact in the active format of a conference. During this eight year interval there has been very rapid and intense development of scientific activity in the general area of laser optics phe nomena. The development of ultrafast laser sources has permitted rapid advances in time resolved spectroscopy and ultrafast processes; the field of optical bistability and strong nonlinearity became a hot topic; and intense work is now underway to clarify ideas of photon localization. These new dev elopments complement many advances in the study of low dimensional systems such as surfaces, new work on phase transitions, and novel studies of elemen tary excitations such as polariton-excitons in localized environments such as quantum wells and heterojunctions.
Download or read book Bell Laboratories Talks and Papers written by Bell Telephone Laboratories, inc. Libraries and Information Systems Center and published by . This book was released on 1984 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cluster And Nanostructure Interfaces Proceedings Of The International Symposium written by Purusottam Jena and published by World Scientific. This book was released on 2000-08-21 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the evolution of the properties of clusters, nanostructures and cluster-based materials, with emphasis on the role of the interface. These materials are characterized by reduced size, dimension and symmetry, and possess many novel properties that are not commonly seen in their bulk phases. The topics include synthesis, nucleation, growth, characterization, atomic and electronic structure, dynamics, ultra-fast spectroscopy, stability; electrical, magnetic, optical, thermodynamic and catalytic properties of clusters (free and supported); cluster materials (self-assembled, ligated and embedded); nanostructures (quantum dots, wells and corrals; nanotubes and wires; colloidal and biological materials) and nano-technology (electronic, magnetic and optical devices). In addition to presenting the current status of the field, the book discusses outstanding problems and future directions.
