Dynamic Scenarios in Two-State Quantum Dot Lasers
Dynamic Scenarios in Two-State Quantum Dot Lasers

Author: André Röhm

Publisher: Springer

Published: 2015-03-25

Total Pages: 113

ISBN-13: 3658094028

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André Röhm investigates the dynamic properties of two-state lasing quantum dot lasers, with a focus on ground state quenching. With a novel semi-analytical approach, different quenching mechanisms are discussed in an unified framework and verified with numerical simulations. The known results and experimental findings are reproduced and parameter dependencies are systematically studied. Additionally, the turn-on dynamics and modulation response curves of two-state lasing devices are presented.

Quantum-Dot-Based Semiconductor Optical Amplifiers for O-Band Optical Communication
Quantum-Dot-Based Semiconductor Optical Amplifiers for O-Band Optical Communication

Author: Holger Schmeckebier

Publisher: Springer

Published: 2016-10-21

Total Pages: 205

ISBN-13: 3319442759

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This thesis examines the unique properties of gallium arsenide (GaAs)-based quantum-dot semiconductor optical amplifiers for optical communication networks, introducing readers to their fundamentals, basic parameters and manifold applications. The static and dynamic properties of these amplifiers are discussed extensively in comparison to conventional, non quantum-dot based amplifiers, and their unique advantages are elaborated on, such as the fast carrier dynamics and the decoupling of gain and phase dynamics. In addition to diverse amplification scenarios involving single and multiple high symbol rate amplitude and phase-coded data signals, wide-range wavelength conversion as a key functionality for optical signal processing is investigated and discussed in detail. Furthermore, two novel device concepts are developed and demonstrated that have the potential to significantly simplify network architectures, reducing the investment and maintenance costs as well as the energy consumption of future networks.

Nonlinear and Nonequilibrium Dynamics of Quantum-Dot Optoelectronic Devices
Nonlinear and Nonequilibrium Dynamics of Quantum-Dot Optoelectronic Devices

Author: Benjamin Lingnau

Publisher: Springer

Published: 2015-12-14

Total Pages: 203

ISBN-13: 3319258052

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This thesis sheds light on the unique dynamics of optoelectronic devices based on semiconductor quantum-dots. The complex scattering processes involved in filling the optically active quantum-dot states and the presence of charge-carrier nonequilibrium conditions are identified as sources for the distinct dynamical behavior of quantum-dot based devices. Comprehensive theoretical models, which allow for an accurate description of such devices, are presented and applied to recent experimental observations. The low sensitivity of quantum-dot lasers to optical perturbations is directly attributed to their unique charge-carrier dynamics and amplitude-phase-coupling, which is found not to be accurately described by conventional approaches. The potential of quantum-dot semiconductor optical amplifiers for novel applications such as simultaneous multi-state amplification, ultra-wide wavelength conversion, and coherent pulse shaping is investigated. The scattering mechanisms and the unique electronic structure of semiconductor quantum-dots are found to make such devices prime candidates for the implementation of next-generation optoelectronic applications, which could significantly simplify optical telecommunication networks and open up novel high-speed data transmission schemes.

Dynamic Scenarios in Two-State Quantum Dot Lasers
Dynamic Scenarios in Two-State Quantum Dot Lasers

Author: André Röhm

Publisher:

Published: 2015

Total Pages:

ISBN-13: 9783658094034

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André Röhm investigates the dynamic properties of two-state lasing quantum dot lasers, with a focus on ground state quenching. With a novel semi-analytical approach, different quenching mechanisms are discussed in an unified framework and verified with numerical simulations. The known results and experimental findings are reproduced and parameter dependencies are systematically studied. Additionally, the turn-on dynamics and modulation response curves of two-state lasing devices are presented. Contents Quantum Dot Laser Theory Two-State Lasing and Ground-State Quenching Modulation Response Target Groups Researchers and students in the field of theoretical physics Practitioners in this area The Author André Röhm wrote his master's thesis under the supervision of Prof. Dr. Eckehard Schöll, PhD and Prof. Dr. Kathy Lüdge in the Collaborative Research Center SFB 910 at the Institute of Theoretical Physics at TU Berlin.

Ultrafast Lasers Based on Quantum Dot Structures
Ultrafast Lasers Based on Quantum Dot Structures

Author: Edik U. Rafailov

Publisher: John Wiley & Sons

Published: 2011-04-08

Total Pages: 243

ISBN-13: 3527634495

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In this monograph, the authors address the physics and engineering together with the latest achievements of efficient and compact ultrafast lasers based on novel quantum-dot structures and devices. Their approach encompasses a broad range of laser systems, while taking into consideration not only the physical and experimental aspects but also the much needed modeling tools, thus providing a holistic understanding of this hot topic.

The Physics and Engineering of Compact Quantum Dot-based Lasers for Biophotonics
The Physics and Engineering of Compact Quantum Dot-based Lasers for Biophotonics

Author: Edik U. Rafailov

Publisher: John Wiley & Sons

Published: 2013-12-30

Total Pages: 349

ISBN-13: 3527665609

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Written by a team of European experts in the field, this book addresses the physics, the principles, the engineering methods, and the latest developments of efficient and compact ultrafast lasers based on novel quantum-dot structures and devices, as well as their applications in biophotonics. Recommended reading for physicists, engineers, students and lecturers in the fields of photonics, optics, laser physics, optoelectronics, and biophotonics.

Dynamics of Quantum Dot Lasers
Dynamics of Quantum Dot Lasers

Author: Christian Otto

Publisher: Springer Science & Business Media

Published: 2014-01-21

Total Pages: 301

ISBN-13: 3319037862

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This thesis deals with the dynamics of state-of-the-art nanophotonic semiconductor structures, providing essential information on fundamental aspects of nonlinear dynamical systems on the one hand, and technological applications in modern telecommunication on the other. Three different complex laser structures are considered in detail: (i) a quantum-dot-based semiconductor laser under optical injection from a master laser, (ii) a quantum-dot laser with optical feedback from an external resonator, and (iii) a passively mode-locked quantum-well semiconductor laser with saturable absorber under optical feedback from an external resonator. Using a broad spectrum of methods, both numerical and analytical, this work achieves new fundamental insights into the interplay of microscopically based nonlinear laser dynamics and optical perturbations by delayed feedback and injection.

Nonlinear Laser Dynamics
Nonlinear Laser Dynamics

Author: Kathy Lüdge

Publisher: John Wiley & Sons

Published: 2012-04-09

Total Pages: 412

ISBN-13: 3527639837

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A distinctive discussion of the nonlinear dynamical phenomena of semiconductor lasers. The book combines recent results of quantum dot laser modeling with mathematical details and an analytic understanding of nonlinear phenomena in semiconductor lasers and points out possible applications of lasers in cryptography and chaos control. This interdisciplinary approach makes it a unique and powerful source of knowledge for anyone intending to contribute to this field of research. By presenting both experimental and theoretical results, the distinguished authors consider solitary lasers with nano-structured material, as well as integrated devices with complex feedback sections. In so doing, they address such topics as the bifurcation theory of systems with time delay, analysis of chaotic dynamics, and the modeling of quantum transport. They also address chaos-based cryptography as an example of the technical application of highly nonlinear laser systems.

Ultrafast Dynamical Processes in Semiconductors
Ultrafast Dynamical Processes in Semiconductors

Author: Kong-Thon Tsen

Publisher: Springer Science & Business Media

Published: 2004-02-25

Total Pages: 424

ISBN-13: 9783540402398

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An international team of experts describes the optical and electronic properties of semiconductors and semiconductor nanostructures at picosecond and femtosecond time scales. The contributions cover the latest research on a wide range of topics. In particular they include novel experimental techniques for studying and characterizing nanostructure materials. The contributions are written in a tutorial way so that not only researchers in the field but also researchers and graduate students outside the field can benefit.