Download or read book Nonlinear Optical Studies Semiconductor Heterostructures written by and published by . This book was released on 1999 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research program focused on the development and application of advanced coherent optical interactions in semiconductor and semiconductor heterostructures. The experimental results were extensive and resulted in considerable advancement of the field. Included in the data was the first observation of the coherent nonlinear optical response of a single quantum dot exciton. Based on this result, we proceeded to demonstrate the first coherent optical control of a single quantum dot exciton and the basic features of quantum wave function engineering in these systems. Our measurements also included the first demonstration of two-electron entanglement in these systems. With support with an ARO-DURIP program, we have succeeded in building the first low temperature near field optical scanning microscope based on probing the coherent nonlinear optical response. The data show evidence that we have been able to map the wave function of a localized exciton in a quantum dot.

Download or read book Nonlinear Optical Studies of the Optical and Electronic Properties of Semiconductor Heterostructures written by Duncan G. Steel and published by . This book was released on 1990 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental work emphasized demonstrating the use of high resolution frequency domain nonlinear laser spectroscopy for the study of materials, particularly semiconductor heterostructures. The work has demonstrated that cw four-wave mixing spectroscopy provides new information regarding the origin of the nonlinear optical response in semiconductor materials as well as new information about structure and relaxation. A summary of the current progress shows: (1) First experimental observation of an interference effect in the nonlinear optical response in GaAs quantum well structures corresponding to a slow component in the nonlinear optical response. The interference effect is evidence that the exciton resonance frequency is shifted in the presence of the electron hole plasma produced by the ionized exciton. (2) Demonstration of frequency domain nonlinear optical spectroscopy methods for the direct measurement of the ambipolar diffusion coefficient and the electron-hole recombination rate in GaAs quantum well structures. (3) Measurement of the response time in strained quantum well structures where the heavy and light hole exciton overlap in energy. and (4) Use of precision nonlinear optical spectroscopy methods for the study of phonon induced spectral diffusion of the heavy hole exciton at low temperature in GaAs quantum well structures. Keywords: Semiconductor junctions; Nonlinear optical analysis. (cp).

Download or read book Nonlinear Optical Studies of Excitons in Semiconductor Heterostructures written by and published by . This book was released on 1995 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on this program has focused on the study and application of the nonlinear response of GaAs and GaAs heterostructures. The work has resulted in the demonstration that the primary nonlinear optical response in GaAs is in fact not due to static interactions in the Hamiltonian (e.g., Coulomb, exchange, etc.), but rather due to strong dynamic exciton-exciton interactions, similar to resonance collisional broadening in dense gases. This so called excitation induced dephasing contribution has been shown to be a primary contributor to the observed polarization dependences of the nonlinear response which were not accounted for by the earlier theory. Other work on this project has focused on the detection and characterization of quantum coherences, notably the two photon induced coherence associated with the biexciton and the Raman coherence associated with the heavy hole light hole interaction. Measurements have shown the ultrafast two photon oscillation of the two photon coherence and the unexpectedly fast relaxation of the Raman coherence. The measurements provide insight into the nature of relaxation. Related w9rk has shown new behavior regarding exciton transport including magnetic field induced freezeout and, in high quality material, ballistic transport. Quantum wells, excitons, nonlinear spectroscopy.

Download or read book Optical Nonlinearities and Instabilities in Semiconductors written by Hartmut Haug and published by Elsevier. This book was released on 2012-12-02 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Nonlinearities and Instabilities in Semiconductors deals with various aspects of nonlinear optical phenomena and related optical instabilities in semiconductors. Measurements and explanations of the optical nonlinearities of various semiconductor materials and structures are presented, along with optical bistability and diode laser thresholds; self-oscillations; and chaos. This text consists of 17 chapters and begins with an introductory chapter to the historical background of investigations of the resonance-enhanced nonlinear optical properties of semiconductors and their manifestations in optical instabilities. The discussion then turns to the experimentally observed optical nonlinearities in homogeneous semiconductors and the microscopic theory of the optical band edge nonlinearities. This book considers the studies of the spectral region close to the band gap meant to exploit the resonance enhancement of the nonlinear optical behavior. The remaining chapters focus on nonlinear optical properties of semiconductor quantum wells; dense nonequilibrium excitations in gallium arsenide; optical decay and spatial relaxation; and optical bistability in semiconductor laser amplifiers. A chapter that describes instabilities in semiconductor lasers concludes the book. This book is intended for research students and active research workers who are interested in the basic physics or in the device applications of optical nonlinearities and instabilities in semiconductors.

Download or read book Electronic States and Optical Transitions in Semiconductor Heterostructures written by Fedor T. Vasko and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theoretical basis and the relevant experimental knowledge underlying our present understanding of the electrical and optical properties of semiconductor heterostructures. Although such structures have been known since the 1940s, it was only in the 1980s that they moved to the forefront of research. The resulting structures have remarkable properties not shared by bulk materials. The text begins with a description of the electronic properties of various types of heterostructures, including discussions of complex band-structure effects, localised states, tunnelling phenomena, and excitonic states. The focus of the remainder of the book is on optical properties, including intraband absorption, luminescence and recombination, Raman scattering, subband optical transitions, nonlinear effects, and ultrafast optical phenomena. The concluding chapter presents an overview of some of the applications that make use of the physics discussed. Appendices provide background information on band structure theory, kinetic theory, electromagnetic modes, and Coulomb effects.

Download or read book Nonlinear Laser Spectroscopy Studies of Semiconductor Heterostructures written by and published by . This book was released on 1993 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research progress in quantum optoelectronics has dominated much of the recent literature in semiconductors because of the new physical phenomena which can be observed and because of the potential for new smaller and higher speed devices of importance to communications, computing, and other high information density applications. Much of the work has focused on III-V compounds because it is believed these materials may provide improved performance over silicon. In addition since they are a direct band gap semiconductor, there are also potential optical applications. Under this AFOSR grant, our laboratory has been involved in the general area of the study of the optical physics of semiconductors. These studies have provided new insight into the nature of optical properties as well as material properties. The work has emphasized the application of coherent nonlinear laser spectroscopy methods in the study of bulk GaAs and GaAs/AlGaAs quantum wells. This work is based on frequency and time domain four-wave mixing techniques, many of which were developed by our group under earlier AFOSR support. These experiments are enabling us to measure many properties of these systems as well as showing that in heterostructures, the effects of disorder must be included in order to provide a complete understanding.

Download or read book Nonlinear Optics in Semiconductors II written by and published by Academic Press. This book was released on 1998-11-09 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its inception in 1966, the series of numbered volumes known as Semiconductors and Semimetals has distinguished itself through the careful selection of well-known authors, editors, and contributors. The "Willardson and Beer" Series, as it is widely known, has succeeded in publishing numerous landmark volumes and chapters. Not only did many of these volumes make an impact at the time of their publication, but they continue to be well-cited years after their original release. Recently, Professor Eicke R. Weber of the University of California at Berkeley joined as a co-editor of the series. Professor Weber, a well-known expert in the field of semiconductor materials, will further contribute to continuing the series' tradition of publishing timely, highly relevant, and long-impacting volumes. Some of the recent volumes, such as Hydrogen in Semiconductors, Imperfections in III/V Materials, Epitaxial Microstructures, High-Speed Heterostructure Devices, Oxygen in Silicon, and others promise that this tradition will be maintained and even expanded.Reflecting the truly interdisciplinary nature of the field that the series covers, the volumes in Semiconductors and Semimetals have been and will continue to be of great interest to physicists, chemists, materials scientists, and device engineers in modern industry.

Download or read book Electronic and Optical Properties of Semiconductors written by Lok C. Lew Yan Voon and published by Universal-Publishers. This book was released on 1997-08 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study is a theoretical investigation of the electronic and optical properties of intrinsic semiconductors using the orthogonal empirical tight binding model. An analysis of the bulk properties of semiconductors with the zincblende, diamond and rocksalt structures has been carried out. We have extended the work of others to higher order in the interaction integrals and derived new parameter sets for certain semiconductors which better fit the experimental data over the Brillouin zone. The Hamiltonian of the heterostructures is built up layer by layer from the parameters of the bulk constituents. The second part of this work examines a number of applications of the theory. We present a new microscopic derivation of the intervalley deformation potentials within the tight binding representation and computes a number of conduction-band deformation potentials of bulk semiconductors. We have also studied the electronic states in heterostructures and have shown theoretically the possibility of having barrier localization of above-barrier states in a multivalley heterostructure using a multiband calculation. Another result is the proposal for a new "type-II" lasing mechanism in short-period GaAs/AlAs superlattices. As for our work on the optical properties, a new formalism, based on the generalized Feynman-Hellmann theorem, for computing interband optical matrix elements has been obtained and has been used to compute the linear and second-order nonlinear optical properties of a number of bulk semiconductors and semiconductor heterostructures. In agreement with the one-band elective mass calculations of other groups, our more elaborate calculations show that the intersubband oscillator strengths of quantum wells can be greatly enhanced over the bulk interband values.

Download or read book Nonlinear Optical Studies of Electron Dynamics in Semiconductors written by Kathleen Kash and published by . This book was released on 1982 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nonlinear Optics in Semiconductors I written by and published by Academic Press. This book was released on 1998-10-22 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its inception in 1966, the series of numbered volumes known as Semiconductors and Semimetals has distinguished itself through the careful selection of well-known authors, editors, and contributors. The "Willardson and Beer" Series, as it is widely known, has succeeded in publishing numerous landmark volumes and chapters. Not only did many of these volumes make an impact at the time of their publication, but they continue to be well-cited years after their original release. Recently, Professor Eicke R. Weber of the University of California at Berkeley joined as a co-editor of the series. Professor Weber, a well-known expert in the field of semiconductor materials, will further contribute to continuing the series' tradition of publishing timely, highly relevant, and long-impacting volumes. Some of the recent volumes, such as Hydrogen in Semiconductors, Imperfections in III/V Materials, Epitaxial Microstructures, High-Speed Heterostructure Devices, Oxygen in Silicon, and others promise that this tradition will be maintained and even expanded. Reflecting the truly interdisciplinary nature of the field that the series covers, the volumes in Semiconductors and Semimetals have been and will continue to be of great interest to physicists, chemists, materials scientists, and device engineers in modern industry.

Download or read book Optics of Semiconductor Nanostructures written by Fritz Henneberger and published by Wiley-VCH. This book was released on 1993-07-15 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contributions of leading international experts assembled in this volume provide an authoritative description of current research in the highly topical area of the optical properties of semiconductor structures in the nanometer range. .

Download or read book Nonlinear Meta Optics written by Costantino De Angelis and published by CRC Press. This book was released on 2020-05-20 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses fabrication as well as characterization and modeling of semiconductor nanostructures in the optical regime, with a focus on nonlinear effects. The visible range as well as near and far infrared spectral region will be considered with a view to different envisaged applications. The book covers the current key challenges of the research in the area, including: exploiting new material platforms, fully extending the device operation into the nonlinear regime, adding re-configurability to the envisaged devices and proposing new modeling tools to help in conceiving new functionalities. • Explores several topics in the field of semiconductor nonlinear nanophotonics, including fabrication, characterization and modeling of semiconductor nanostructures in the optical regime, with a focus on nonlinear effects • Describes the research challenges in the field of optical metasurfaces in the nonlinear regime • Reviews the use and achievements of all-dielectric nanoantennas for strengthening the nonlinear optical response • Describes both theoretical and experimental aspects of photonic devices based on semiconductor optical nanoantennas and metasurfaces • Gathers contributions from several leading groups in this research field to provide a thorough and complete overview of the current state of the art in the field of semiconductor nonlinear nanophotonics Costantino De Angelis has been full professor of electromagnetic fields at the University of Brescia since 1998. He is an OSA Fellow and has been responsible for several university research contracts in the last 20 years within Europe, the United States, and Italy. His technical interests are in optical antennas and nanophotonics. He is the author of over 150 peer-reviewed scientific journal articles. Giuseppe Leo has been a full professor in physics at Paris Diderot University since 2004, and in charge of the nonlinear devices group of MPQ Laboratory since 2006. His research areas include nonlinear optics, micro- and nano-photonics, and optoelectronics, with a focus on AlGaAs platform. He has coordinated several research programs and coauthored 100 peer-reviewed journal articles, 200 conference papers, 10 book chapters and also has four patents. Dragomir Neshev is a professor in physics and the leader of the experimental photonics group in the Nonlinear Physics Centre at Australian National University (ANU). His activities span over several branches of optics, including nonlinear periodic structures, singular optics, plasmonics, and photonic metamaterials. He has coauthored 200 publications in international peer-reviewed scientific journals.

Download or read book Quantum Optical Studies of Semiconductors written by and published by . This book was released on 1996 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: There have been two primary objectives during the current program: (1) The development and application of nonlinear laser spectroscopy to the study of excitation dynamics near the band edge of semiconductor heterostructures; (2) The understanding of pump noise suppression for production of number squeezed states of the laser field from quantum well lasers for application to low noise experiments. Our progress in the study of GaAs structures has relied on an approach employing both high resolution frequency domain and picosecond/femtosecond coherent nonlinear spectroscopy. We have obtained new understanding of the dynamics and energy level structure associated with excitons particularly as these properties are affected by disorder and magnetic fields. Our work in bulk GaAs shows that the nonlinear response at moderate densities is due to dynamic exciton-exciton interactions which lead to a nonlinear response proportional to the effective exciton-exciton collision cross section. These experiments have been paralleled with new understanding regarding the role of quantum coherences in the optical properties of these systems. Our studies of noise reduction below the standard quantum limit have resulted in our achieving 95% of the theoretically predicted limit for number state squeezing in a quantum well laser (4.5 dB below shot noise, 5.9 dB corrected to the facet). We have also made a preliminary demonstration of an application to semiconductor spectroscopy in the study of the Urbach tail in a GaAs multiple quantum well structure.

Download or read book Non Equilibrium Dynamics of Semiconductors and Nanostructures written by Kong-Thon Tsen and published by CRC Press. This book was released on 2018-10-03 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advent of the femto-second laser has enabled us to observe phenomena at the atomic timescale. One area to reap enormous benefits from this ability is ultrafast dynamics. Collecting the works of leading experts from around the globe, Non-Equilibrium Dynamics of Semiconductors and Nanostructures surveys recent developments in a variety of areas in ultrafast dynamics. In eight authoritative chapters illustrated by more than 150 figures, this book spans a broad range of new techniques and advances. It begins with a review of spin dynamics in a high-mobility two-dimensional electron gas, followed by the generation, propagation, and nonlinear properties of high-amplitude, ultrashort strain solitons in solids. The discussion then turns to nonlinear optical properties of nanoscale artificial dielectrics, optical properties of GaN self-assembled quantum dots, and optical studies of carrier dynamics and non-equilibrium optical phonons in nitride-based semiconductors. Rounding out the presentation, the book examines ultrafast non-equilibrium electron dynamics in metal nanoparticles, monochromatic acoustic phonons in GaAs, and electromagnetically induced transparency in semiconductor quantum wells. With its pedagogical approach and practical, up-to-date coverage, Non-Equilibrium Dynamics of Semiconductors and Nanostructures allows you to easily put the material into practice, whether you are a seasoned researcher or new to the field.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research in Progress written by and published by . This book was released on 1992 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nonlinear Optics written by S. Miyata and published by Elsevier. This book was released on 2012-12-02 with total page 555 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of nonlinear optics developed gradually with the invention of lasers. After the discovery of second-harmonic generation in quartz, many other interesting nonlinear optical processes were rapidly discovered. Simultaneously theoretical programmes for the understanding of nonlinear optical phenomena were stimulated in accordance to develop structure-property relationships. In the beginning, research advances were made on inorganic ferroelectric materials followed by semiconductors. In the 1970's, the importance of organic materials was realised because of their nonlinear optical responses, fast optical response, high laser damage thresholds, architectural flexibility, and ease of fabrication. At present materials can be classified into three categories - inorganic ferroelectrics, semiconductors, and organic materials. Advances have also been made in quantum chemistry approaches to investigate nonlinear optical susceptibilities and in the development of novel nonlinear optical devices. Generally, inorganic and organic nonlinear optical materials and their related optical processes are reported in separate meetings. This book collects for the first time papers covering the recent developments and areas of present research in the field of nonlinear optical materials.