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Author : Vivek Srinivas
Publisher :
ISBN 13 :
Total Pages : 334 pages
Book Rating : 4.:/5 (369 download)
Download or read book Exciton Dynamics in GaAs Quantum Wells written by Vivek Srinivas and published by . This book was released on 1992 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Xuelong Cao
Publisher :
ISBN 13 :
Total Pages : 250 pages
Book Rating : 4.:/5 (339 download)
Download or read book Exciton Dynamics in AlGaAs/GaAs Quantum Wells and in Focused Ion Beam Patterned Quantum Well Wire-like Structures written by Xuelong Cao and published by . This book was released on 1995 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mary-Ann Mycek
Publisher :
ISBN 13 :
Total Pages : 368 pages
Book Rating : 4.:/5 (33 download)
Download or read book Ultrafast Dynamics of Coulomb Correlated Excitons in GaAs Quantum Wells written by Mary-Ann Mycek and published by . This book was released on 1995 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jason Leonard
Publisher : Springer
ISBN 13 : 3319697331
Total Pages : 67 pages
Book Rating : 4.3/5 (196 download)
Download or read book Exciton Transport Phenomena in GaAs Coupled Quantum Wells written by Jason Leonard and published by Springer. This book was released on 2017-11-02 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents results crucial to the emerging field of indirect excitons. These specially designed quasiparticles give the unique opportunity to study fundamental properties of quantum degenerate Bose gases in semiconductors. Furthermore, indirect excitons allow for the creation of novel optoelectronic devices where excitons are used in place of electrons. Excitonic devices are explored for the development of advanced signal processing seamlessly coupled with optical communication. The thesis presents and describes the author's imaging experiments that led to the discovery of spin transport of excitons. The many firsts presented herein include the first studies of an excitonic conveyer, leading to the discovery of the dynamical localization-delocalization transition for excitons, and the first excitonic ramp and excitonic diode with no energy-dissipating voltage gradient.
Author : Aviv Frommer
Publisher :
ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.:/5 (87 download)
Download or read book The Dynamics and Spin Relaxation of Excitons in Gaas/Algaas Quantum Wells written by Aviv Frommer and published by . This book was released on 1993 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Er-Xuan Ping
Publisher :
ISBN 13 :
Total Pages : 102 pages
Book Rating : 4.:/5 (255 download)
Download or read book Dynamics of Excitons in GaAs-AlxGa1-xAs Multiple Quantum Wells Probed by Time-resolved Photoluminescence written by Er-Xuan Ping and published by . This book was released on 1991 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. B. Stark
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (228 download)
Download or read book Ultrafast Dynamics of Magnetically Confined Excitons in GaAs Quantum Wells written by J. B. Stark and published by . This book was released on 1992 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatial confinement along one dimension, using the methods of epitaxial crystal growth, has demonstrated that linear and nonlinear optical properties depend strongly on dimensionality. Confinement along the remaining directions, however, continues to present formidable technological obstacles. Difficulties in the control of the surface properties and size distribution of quantum dots and semiconductor microcrystallites results in materials with unsatisfactory optical quality. Confinement along all three dimensions can be achieved, in materials of excellent optical quality, by placing a quantum well material in a perpendicular magnetic field. As the field is increased, the extension of the resulting electronic orbitals decreases, so that the dimensionality of the states may be tuned from two to zero dimensions. Using femtosecond excite-and-probe optical techniques in fields as large as 12 Tesla, we measure the time resolved dynamics of zero dimensional magneto-excitons.
Author :
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (683 download)
Download or read book Ultrafast Dynamics of Coulomb Correlated Excitons in GaAs Quantum Wells written by and published by . This book was released on 1995 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author measures the transient nonlinear optical response of room temperature excitons in gallium arsenide quantum wells via multi-wave mixing experiments. The dynamics of the resonantly excited excitons is directly reflected by the ultrafast decay of the induced nonlinear polarization, which radiates the detected multi-wave mixing signal. She characterizes this ultrafast coherent emission in both amplitude and phase, using time- and frequency-domain measurement techniques, to better understand the role of Coulomb correlation in these systems. To interpret the experimental results, the nonlinear optical response of a dense medium is calculated using a model including Coulomb interaction. She contributes three new elements to previous theoretical and experimental studies of these systems. First, surpassing traditional time-integrated measurements, she temporally resolves the amplitude of the ultrafast coherent emission. Second, in addition to measuring the third-order four-wave mixing signal, she also investigates the fifth-order six-wave mixing response. Third, she characterizes the ultrafast phase dynamics of the nonlinear emission using interferometric techniques with an unprecedented resolution of approximately 140 attoseconds. The author finds that effects arising from Coulomb correlation dominate the nonlinear optical response when the density of excitons falls below 3 x 1011 cm−2, the saturation density. These signatures of Coulomb correlation are investigated for increasing excitation density to gradually screen the interactions and test the validity of the model for dense media. The results are found to be qualitatively consistent with both the predictions of the model and with numerical solutions to the semiconductor Bloch equations. Importantly, the results also indicate current experimental and theoretical limitations, which should be addressed in future research.
Author : John P. Doran
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (81 download)
Download or read book Exciton Dynamics in CdZnTe/ZnTe Quantum Wells written by John P. Doran and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jagdeep Shah
Publisher : Springer Science & Business Media
ISBN 13 : 366203770X
Total Pages : 536 pages
Book Rating : 4.6/5 (62 download)
Download or read book Ultrafast Spectroscopy of Semiconductors and Semiconductor Nanostructures written by Jagdeep Shah and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrafast spectroscopy of semiconductors and semiconductor nanostructures is currently one of the most exciting areas of research in condensed-matter physics. Remarkable recent progress in the generation of tunable femtosecond pulses has allowed direct investigation of the most fundamental dynamical processes in semiconductors. This second edition presents the most striking recent advances in the techniques of ultrashort pulse generation and ultrafast spectroscopy; it discusses the physics of relaxation, tunneling and transport dynamics in semiconductors and semiconductor nanostructures following excitation by femtosecond laser pulses.
Author : Jason Leonard
Publisher : Springer
ISBN 13 : 9783319888347
Total Pages : 59 pages
Book Rating : 4.8/5 (883 download)
Download or read book Exciton Transport Phenomena in GaAs Coupled Quantum Wells written by Jason Leonard and published by Springer. This book was released on 2019-06-04 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents results crucial to the emerging field of indirect excitons. These specially designed quasiparticles give the unique opportunity to study fundamental properties of quantum degenerate Bose gases in semiconductors. Furthermore, indirect excitons allow for the creation of novel optoelectronic devices where excitons are used in place of electrons. Excitonic devices are explored for the development of advanced signal processing seamlessly coupled with optical communication. The thesis presents and describes the author's imaging experiments that led to the discovery of spin transport of excitons. The many firsts presented herein include the first studies of an excitonic conveyer, leading to the discovery of the dynamical localization-delocalization transition for excitons, and the first excitonic ramp and excitonic diode with no energy-dissipating voltage gradient.
Author : Yoshihiro Takiguchi
Publisher :
ISBN 13 :
Total Pages : 762 pages
Book Rating : 4.:/5 (325 download)
Download or read book Carrier and Exciton Dynamics in Strained Semiconductor Bulk and Quantum Wells written by Yoshihiro Takiguchi and published by . This book was released on 1995 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sangam Chatterjee
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)
Download or read book Exciton Formation Dynamics in Semiconductor Quantum Wells (PHD). written by Sangam Chatterjee and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S. D. Baranovskii
Publisher :
ISBN 13 :
Total Pages : 1 pages
Book Rating : 4.:/5 (742 download)
Download or read book Temperature-Dependent Exciton Dynamics in Quantum Wells written by S. D. Baranovskii and published by . This book was released on 1999 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report discusses the relation between expenmental results and theoretical models suggested so far for the temperature-dependent energy relaxation and recombination of excitons in coupled QWs. Physical conditions are discussed that favour each class of theoretical models.
Author : M. Zachau
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (228 download)
Download or read book Dynamics of Excitons in Quantum Wells written by M. Zachau and published by . This book was released on 1992 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We measure the time dependence of the excitonic photoluminescence (PL) in quantum wells (QWs) with well width Lz ranging from 25A to 50A. The samples are AI0.2Ga0.8As/GaAs multiple QWs with 30 periods with decoupled wells and were grown by molecular beam epitaxy (MBE). QWs grown with and without growth interruption at the interfaces are investigated. The excitation is provided by 5 psec pulses from a synchronously pumped tunable dye laser. The PL spectrum is detected by an imaging (i.e. multichannel) photomultiplier with a spectral resolution of 0.5 meV and time resolution (FWHM) of 120 psec.
Author : Benjamin Rene Zaks
Publisher :
ISBN 13 : 9781267934536
Total Pages : 182 pages
Book Rating : 4.9/5 (345 download)
Download or read book Nonlinear Exciton Dynamics in InGaAs Quantum Wells written by Benjamin Rene Zaks and published by . This book was released on 2012 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: When the strong THz field is polarized in the plane of the quantum well, we are able to observe optical light at up to 11 frequencies that were not present before application of the THz. The new frequencies are separated from the optical frequency by multiples of the THz frequency and are often referred to as sidebands. To understand the origin of the high-order sidebands observed, which are present up to 8th order, a recollision model between electrons and holes is adopted. Strong agreement with theoretical predictions indicates that recollisions are responsible for high-order sideband generation providing an intriguing connection between atomic and condensed matter phenomena.
Author : Sang Yup Kim
Publisher :
ISBN 13 :
Total Pages : 312 pages
Book Rating : 4.:/5 (34 download)
Download or read book Excitons in Coupled Double Quantum Wells written by Sang Yup Kim and published by . This book was released on 2001 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
