Nonlinear Optical Studies Semiconductor Heterostructures - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Nonlinear Optical Studies Semiconductor Heterostructures write by . This book was released on 1999. Nonlinear Optical Studies Semiconductor Heterostructures available in PDF, EPUB and Kindle. 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.
Nonlinear Optical Studies of the Optical and Electronic Properties of Semiconductor Heterostructures
Nonlinear Optical Studies of the Optical and Electronic Properties of Semiconductor Heterostructures - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Nonlinear Optical Studies of the Optical and Electronic Properties of Semiconductor Heterostructures write by Duncan G. Steel. This book was released on 1990. Nonlinear Optical Studies of the Optical and Electronic Properties of Semiconductor Heterostructures available in PDF, EPUB and Kindle. 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).
Nonlinear Optical Studies of Excitons in Semiconductor Heterostructures
Nonlinear Optical Studies of Excitons in Semiconductor Heterostructures - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Nonlinear Optical Studies of Excitons in Semiconductor Heterostructures write by . This book was released on 1995. Nonlinear Optical Studies of Excitons in Semiconductor Heterostructures available in PDF, EPUB and Kindle. 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.
Optical Nonlinearities and Instabilities in Semiconductors
Optical Nonlinearities and Instabilities in Semiconductors - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Optical Nonlinearities and Instabilities in Semiconductors write by Hartmut Haug. This book was released on 2012-12-02. Optical Nonlinearities and Instabilities in Semiconductors available in PDF, EPUB and Kindle. 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.
Electronic States and Optical Transitions in Semiconductor Heterostructures
Electronic States and Optical Transitions in Semiconductor Heterostructures - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Electronic States and Optical Transitions in Semiconductor Heterostructures write by Fedor T. Vasko. This book was released on 2012-12-06. Electronic States and Optical Transitions in Semiconductor Heterostructures available in PDF, EPUB and Kindle. 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.
