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Many Body Effects And Optical Nonlinearities In Semiconductor Quantum Wells
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Book Synopsis Many-body Effects in Low-order Optical Nonlinearities of Semiconductor Quantum Wells (PHD). by : Ilia Roumiantsev
Download or read book Many-body Effects in Low-order Optical Nonlinearities of Semiconductor Quantum Wells (PHD). written by Ilia Roumiantsev and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Many-body Effects and Optical Nonlinearities in Semiconductor Quantum Wells by : Mark P. Mullane
Download or read book Many-body Effects and Optical Nonlinearities in Semiconductor Quantum Wells written by Mark P. Mullane and published by . This book was released on 2000 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive model for the semiconductor quantum well is developed, which includes the effects of quantum confinement and strain, as well as many-body (Coulomb) effects. The model is applied in two regimes: the high carrier density regime associated with gain, and the low carrier density regime where the medium is absorbing. The linewidth enhancement factor (a-parameter) describes the carrier-induced relationship between gain and index changes in a semiconductor, and plays a key role in many aspects of semiconductor laser operation, particularly those associated with modulation and feedback. In this thesis we examine in detail the relevant contributions to the a-parameter, highlighting the significant influence of many-body effects. We then study of the effects of device structure and composition, discussing ways of minimising a in the context of device design. The device operating regime is found to be critically important, and the quantum well width is also found to play a role. We also explore the qualitative differences between compressive and tensile strained quantum wells, and their respective sensitivity to operating conditions. Semiconductor quantum wells also display very interesting and useful properties in the low carrier density regime, where the medium is absorbing. Particularly interesting are the saturating properties near the excitonic peak, and the effects of carrier (plasma) temperature. The possibility of significant carrier cooling under short pulse excitation near the bandedge has been highlighted, and we explore the impact of such carrier cooling on the saturation characteristics. A spectral regime of enhanced fast saturation is identified, which could provide a mechanism for previously observed mode-locking behaviour.
Book Synopsis Quantum Theory of the Optical and Electronic Properties of Semiconductors by : Hartmut Haug
Download or read book Quantum Theory of the Optical and Electronic Properties of Semiconductors written by Hartmut Haug and published by World Scientific Publishing Company. This book was released on 1994-10-31 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook presents the basic elements needed to understand and engage in research in semiconductor physics. It deals with elementary excitations in bulk and low-dimensional semiconductors, including quantum wells, quantum wires and quantum dots. The basic principles underlying optical nonlinearities are developed, including excitonic and many-body plasma effects. The fundamentals of optical bistability, semiconductor lasers, femtosecond excitation, optical Stark effect, semiconductor photon echo, magneto-optic effects, as well as bulk and quantum-confined Franz-Keldysh effects are covered. The material is presented in sufficient detail for graduate students and researchers who have a general background in quantum mechanics. Request Inspection Copy
Book Synopsis Quantum Theory Of The Optical And Electronic Properties Of Semiconductors (5th Edition) by : Hartmut Haug
Download or read book Quantum Theory Of The Optical And Electronic Properties Of Semiconductors (5th Edition) written by Hartmut Haug and published by World Scientific Publishing Company. This book was released on 2009-01-22 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This invaluable textbook presents the basic elements needed to understand and research into semiconductor physics. It deals with elementary excitations in bulk and low-dimensional semiconductors, including quantum wells, quantum wires and quantum dots. The basic principles underlying optical nonlinearities are developed, including excitonic and many-body plasma effects. Fundamentals of optical bistability, semiconductor lasers, femtosecond excitation, the optical Stark effect, the semiconductor photon echo, magneto-optic effects, as well as bulk and quantum-confined Franz-Keldysh effects, are covered. The material is presented in sufficient detail for graduate students and researchers with a general background in quantum mechanics.This fifth edition includes an additional chapter on 'Quantum Optical Effects' where the theory of quantum optical effects in semiconductors is detailed. Besides deriving the 'semiconductor luminescence equations' and the expression for the stationary luminescence spectrum, results are presented to show the importance of Coulombic effects on the semiconductor luminescence and to elucidate the role of excitonic populations.
Book Synopsis Quantum Theory of the Optical and Electronic Properties of Semiconductors by : Hartmut Haug
Download or read book Quantum Theory of the Optical and Electronic Properties of Semiconductors written by Hartmut Haug and published by World Scientific Publishing Company Incorporated. This book was released on 1994 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook presents the basic elements needed to understand and engage in research in semiconductor physics. It deals with elementary excitations in bulk and low-dimensional semiconductors, including quantum wells, quantum wires and quantum dots. The basic principles underlying optical nonlinearities are developed, including excitonic and many-body plasma effects. The fundamentals of optical bistability, semiconductor lasers, femtosecond excitation, optical Stark effect, semiconductor photon echo, magneto-optic effects, as well as bulk and quantum-confined Franz-Keldysh effects are covered. The material is presented in sufficient detail for graduate students and researchers who have a general background in quantum mechanics.
Book Synopsis Coulomb Correlation Effects in the Ultrafast Nonlinear Optical Response of Semiconductor Quantum Wells by : Neil Primozich
Download or read book Coulomb Correlation Effects in the Ultrafast Nonlinear Optical Response of Semiconductor Quantum Wells written by Neil Primozich and published by . This book was released on 2000 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carrier Excitations and Nonlinear Optical Effects in Semiconductor Quantum Wells by : Marie Shiang-Chyong Luo
Download or read book Carrier Excitations and Nonlinear Optical Effects in Semiconductor Quantum Wells written by Marie Shiang-Chyong Luo and published by . This book was released on 1993 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Density matrix formulation is used to investigate the nonlinear optical properties of semiconductor quantum-well devices. The generation of terahertz electromagnetic pulses from ultrafast optical pulse excitations of semiconductor heterostructures is studied in the time domain with a three-level model. Coupled optical Bloch equations are derived with a rotating wave approximation and solved by the fifth-order Runge-Kutta method. Two types of quantum-well structures, the asymmetrically coupled quantum wells and a single quantum well, are studied. An instantaneous radiation transient of the generated terahertz pulse follows the time evolution of the exciting laser pulse and is due to the optical rectification effect. Ringing oscillations at later times observed for both structures are attributed to the quantum beats of the electron oscillations between the coupled quantum wells or of the light-hole and heavy-hole intersubband transitions. Our theoretical results agree very well with the experimental data published by researchers at AT&T Bell Laboratories. Both the laser bandwidth and the exciton dephasing time are crucial in determining the waveform of the terahertz signals. This problem is also studied in the frequency domain with an exciton Green's function approach, which takes into account the Coulomb interactions between electrons and holes. The second-order nonlinear susceptibility is enhanced when the laser photon energy is resonant with a specific exciton level. Selective control of the charge oscillations by coherent multipulse sequences is modeled by a second-order perturbation method. An analytical solution for the two-pulse excitation is derived with the delta-function assumption, and the modulation of the charge oscillations is dependent on the detuning energy, the pulse delay time, and the relative phase between the two pulses. Numerical results, taking into account the finite pulse widths and relaxation times, are also calculated from the optical Bloch equations and agree with those for the analytical solution. The influence of many-body effects on intersubband excitations is studied with a new formulation. It was found that the depolarization and excitonic shifts are of comparable magnitude and must be taken into consideration to account for the experimental spin-density and charge-density excitation spectra.
Book Synopsis Quantum Theory of the Optical and Electronic Properties of Semiconductors by : Hartmut Haug
Download or read book Quantum Theory of the Optical and Electronic Properties of Semiconductors written by Hartmut Haug and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Femtosecond and Quasi-steady-state Optical Nonlinear Physics of GaAs/AlAs Type-II Quantum Wells by : Winston Su-Kee Fu
Download or read book Femtosecond and Quasi-steady-state Optical Nonlinear Physics of GaAs/AlAs Type-II Quantum Wells written by Winston Su-Kee Fu and published by . This book was released on 1992 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optical Nonlinearities and Instabilities in Semiconductors by : Hartmut Haug
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.
Book Synopsis Optical Properties of Semiconductors by : G. Martinez
Download or read book Optical Properties of Semiconductors written by G. Martinez and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is widely recognized that an understanding of the optical pro perties of matter will give a great deal of important information re levant to the fundamental physical properties. This is especially true in semiconductor physics for which, due to the intrinsic low screening of these materials, the optical response is quite rich. Their spectra reflect indeed as well electronic as spin or phonon transitions. This is also in the semiconductor field that artificial structures have been recently developed, showing for the first time specific physical properties related to the low dimentionality of the electronic and vi bronic properties : with this respect the quantum and fractional quan tum Hall effects are among the most well known aspects. The associated reduced screening is also a clear manifestation of these aspects and as such favors new optical properties or at least significantly enhan ces some of them. For all these reasons, it appeared necessary to try to review in a global way what the optical investigation has brought today about the understanding of the physics of semiconductors. This volume collects the papers presented at the NATO Advanced study Inst i tut e on "Optical Properties of Semiconductors" held at the Ettore Majorana Centre, Erice, Sicily on March 9th to 20th, 1992. This school brought together 70 scientists active in research related to optical properties of semiconductors. There were 12 lecturers who pro vided the main contributions .
Book Synopsis Optical Phenomena in Semiconductor Structures of Reduced Dimensions by : D.J. Lockwood
Download or read book Optical Phenomena in Semiconductor Structures of Reduced Dimensions written by D.J. Lockwood and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remarkable advances in semiconductor growth and processing technologies continue to have a profound impact on condensed-matter physics and to stimulate the invention of novel optoelectronic effects. Intensive research on the behaviors of free carriers has been carried out in the two-dimensional systems of semiconductor heterostructures and in the one and zero-dimensional systems of nanostructures created by the state-of-the-art fabrication methods. These studies have uncovered unexpected quantum mechanical correlations that arise because of the combined effects of strong electron-electron interactions and wave function confinement associated with reduced dimensionality. The investigations of these phenomena are currently at the frontiers of condensed-matter physics. They include areas like the fractional quantum Hall effect, the dynamics of electrons on an ultra short (femtosecond) time scale, electron behavior in quantum wires and dots, and studies of electron tunneling phenomena in ultra small semiconductor structures. Optical techniques have made important contributions to these fields in recent years, but there has been no coherent review of this work until now. The book provides an overview of these recent developments that will be of interest to semiconductor materials scientists in university, government and industrial laboratories.
Book Synopsis Nonlinear Optics in Semiconductors I by :
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.
Book Synopsis Linear and Nonlinear Optical Properties of Semiconductor Quantum Wells by : S. Schmitt-Rink
Download or read book Linear and Nonlinear Optical Properties of Semiconductor Quantum Wells written by S. Schmitt-Rink and published by . This book was released on 1989 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantum Wells: Physics And Electronics Of Two-dimensional Systems by : Alexander Shik
Download or read book Quantum Wells: Physics And Electronics Of Two-dimensional Systems written by Alexander Shik and published by World Scientific. This book was released on 1998-01-09 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This invaluable book is devoted to the physics, technology and device applications of semiconductor structures with ultrathin layers where the electronic properties are governed by the quantum-mechanical laws. Such structures called quantum wells or structures with the two-dimensional electron gas, have become one of the most actively investigated objects in modern solid state physics. Electronic properties of quantum wells differ dramatically from those of bulk semiconductors, which allows one to observe new types of physical phenomena, such as the quantum Hall effect and many other so-far-unknown kinetic and optical effects. This, in turn, offers wide opportunities for creating semiconductor devices based on new principles, and it has give birth to the new branch of electronics called nanoelectronics.
Book Synopsis Nonlinear Optics in Semiconductors II by :
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.
Book Synopsis Microscopic Theory of Optical Nonlinearities and Spontaneous Emission Lifetime in Group-III Nitride Quantum Wells by :
Download or read book Microscopic Theory of Optical Nonlinearities and Spontaneous Emission Lifetime in Group-III Nitride Quantum Wells written by and published by . This book was released on 1999 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microscopic calculations of the absorption/gain and luminescence spectra are presented for wide bandgap Ga{sub 1-x}In(subscript x)N/GaN quantum well systems. Whereas structures with narrow well widths exhibit the usual excitation dependent bleaching of the exciton resonance without shifting spectral position, a significant blue shift of the exciton peak is obtained for wider quantum wells. This blue shift, which is also present in the excitation dependent luminescence spectra, is attributed to the interplay between the screening of a strain induced piezoelectric field and the density dependence of many-body Coulomb effects. The calculations also show an over two orders of magnitude increase in the spontaneous electron-hole-pair lifetime with well width: due to the reduction of the electron-hole wavefunction overlap in the wider wells. The resulting decrease in spontaneous emission loss is predicted to lead to improved threshold properties in wide quantum well lasers.
