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Ultrafast Carrier Dynamics Of Ingaas Quantum Dots In The High Carrier Density Regime
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Book Synopsis Ultrafast Carrier Dynamics of InGaAs Quantum Dots in the High Carrier Density Regime by : Kyoungsik Kim
Download or read book Ultrafast Carrier Dynamics of InGaAs Quantum Dots in the High Carrier Density Regime written by Kyoungsik Kim and published by . This book was released on 2004 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultrafast carrier dynamics in p doped InGaAs/GaAs quantum dots by : Valentina Cesari
Download or read book Ultrafast carrier dynamics in p doped InGaAs/GaAs quantum dots written by Valentina Cesari and published by . This book was released on 2009 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultrafast Density-and-temperature-dependent Carrier Dynamics in a Quantum Dots-in-a-well Heterostructure by :
Download or read book Ultrafast Density-and-temperature-dependent Carrier Dynamics in a Quantum Dots-in-a-well Heterostructure written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultrafast Carrier Dynamics in Semiconductor Self-assembled Quantum Dots in the Low Carrier Density Regime by : Junji Urayama
Download or read book Ultrafast Carrier Dynamics in Semiconductor Self-assembled Quantum Dots in the Low Carrier Density Regime written by Junji Urayama and published by . This book was released on 2002 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultrafast Carrier Dynamics in Ρ Doped InFaAs/GaAs Quantum Dots by : Valentina Cesari
Download or read book Ultrafast Carrier Dynamics in Ρ Doped InFaAs/GaAs Quantum Dots written by Valentina Cesari and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Time-Resolved Electronic Relaxation Processes in Self-Organized Quantum Dots by :
Download or read book Time-Resolved Electronic Relaxation Processes in Self-Organized Quantum Dots written by and published by . This book was released on 2005 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have performed a comprehensive set of experiments on the dynamics of electrons and holes in semiconductor quantum dots, and a complete picture of the dynamics as a function of carrier density and temperature has emerged. Specifically, they have used two- and three-pulse femtosecond differential transmission spectroscopy to study the dependence of quantum dot carrier dynamics on temperature. At low temperatures and densities, the rates for relaxation between the quantum dot confined states and for capture from the barrier region into the various dot levels could be directly determined. For electron-hole pairs generated directly in the quantum dot excited state, relaxation is dominated by electron-hole scattering, and occurs on a 5-ps time scale. Capture times from the barrier into the quantum dot are on the order of 2 ps (into the excited state) and 10 ps (into the ground state). The phonon bottleneck was clearly observed in low-density capture experiments, and the conditions for its observation (namely, the suppression of electron-hole scattering for non-geminately captured electrons) were determined. As temperature increases beyond about 100 K, the dynamics become dominated by the reemission of carriers from the lower dot levels due to the large density of states in the wetting layer and barrier region. Measurements of the gain dynamics show fast (130-fs) gain recovery due to intradot carrier-carrier scattering, and picosecond-scale capture. Direct measurement of the transparency density versus temperature shows the dramatic effect of carrier reemission for the quantum dots to thermally activated scattering. The carrier dynamics at elevated temperatures are thus strongly dominated by the high density of the high-energy continuum states relative to the dot-confined levels. Deleterious hot carrier effects can be suppressed in quantum dot lasers by resonant tunneling injection.
Book Synopsis Ultrafast Carrier and Gain Dynamics in Strongly Confined Semiconductor Quantum Dots by : Harald Willi Giessen
Download or read book Ultrafast Carrier and Gain Dynamics in Strongly Confined Semiconductor Quantum Dots written by Harald Willi Giessen and published by . This book was released on 1995 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultrafast Carrier Capture in InGaAs Quantum Posts by :
Download or read book Ultrafast Carrier Capture in InGaAs Quantum Posts written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To explore the capture dynamics of photoexcited carriers in semiconductor quantum posts, optical pump - THz probe and time-resolved photoluminescence spectroscopy were performed. The results of the THz experiment show that after ultrafast excitation, electrons relax within a few picoseconds into the quantum posts, which are acting as efficient traps. The saturation of the quantum post states, probed by photoluminescence, was reached approximately at ten times the quantum post density in the samples. The results imply that quantum posts are posts highly attractive nanostructures for future device applications.
Book Synopsis Ultrafast Carrier Dynamics in Quantum Dot Sensitized Systems by : Hai Wang
Download or read book Ultrafast Carrier Dynamics in Quantum Dot Sensitized Systems written by Hai Wang and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Self-Assembled InGaAs/GaAs Quantum Dots by :
Download or read book Self-Assembled InGaAs/GaAs Quantum Dots written by and published by Academic Press. This book was released on 1999-03-29 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is concerned with the crystal growth, optical properties, and optical device application of the self-formed quantum dot, which is one of the major current subjects in the semiconductor research field.The atom-like density of states in quantum dots is expected to drastically improve semiconductor laser performance, and to develop new optical devices. However, since the first theoretical prediction for its great possibilities was presented in 1982, due to the difficulty of their fabrication process. Recently, the advent of self-organized quantum dots has made it possible to apply the results in important optical devices, and further progress is expected in the near future.The authors, working for Fujitsu Laboratories, are leading this quantum-dot research field. In this volume, they describe the state of the art in the entire field, with particular emphasis on practical applications.
Book Synopsis Development of Ultrafast Narrow-bandwidth Terahertz Sources with Applications to Exciton Spectroscopy by : Timothy F. Meade
Download or read book Development of Ultrafast Narrow-bandwidth Terahertz Sources with Applications to Exciton Spectroscopy written by Timothy F. Meade and published by . This book was released on 2006 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultrafast Spectroscopy of Semiconductors and Semiconductor Nanostructures by : Jagdeep Shah
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.
Book Synopsis Carrier Dynamics in Semiconductor Quantum Dots by : Jörg Siegert
Download or read book Carrier Dynamics in Semiconductor Quantum Dots written by Jörg Siegert and published by . This book was released on 2006 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carrier Dynamics in Self-organized Quantum Dots by : Gary Wang
Download or read book Carrier Dynamics in Self-organized Quantum Dots written by Gary Wang and published by . This book was released on 1997 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Charge Carrier Dynamics and the Development of Optical Gain in Semiconductor Quantum Dots by : Ryan R. Cooney
Download or read book Charge Carrier Dynamics and the Development of Optical Gain in Semiconductor Quantum Dots written by Ryan R. Cooney and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Growth of In(Ga)As/GaAs Self-organized Quantum Dots and Their Application to High-speed Lasers and Spin-polarized Light Sources by : Siddhārtha Ghosha
Download or read book Growth of In(Ga)As/GaAs Self-organized Quantum Dots and Their Application to High-speed Lasers and Spin-polarized Light Sources written by Siddhārtha Ghosha and published by . This book was released on 2003 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: