Spatio-Temporal Dynamics and Quantum Fluctuations in Semiconductor Lasers - 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 Spatio-Temporal Dynamics and Quantum Fluctuations in Semiconductor Lasers write by Edeltraud Gehrig. This book was released on 2003-09-22. Spatio-Temporal Dynamics and Quantum Fluctuations in Semiconductor Lasers available in PDF, EPUB and Kindle. Presents fundamental theories and simulations of the spatio-temporal dynamics and quantum fluctuations in semiconductor lasers. The dynamic interplay of light and matter is theoretically described by taking into account microscopic carrier dynamics, spatially dependent light-field propagation and the influence of spontaneous emission and noise.
Spatio-temporal Dynamics of Semiconductor Lasers
Spatio-temporal Dynamics of Semiconductor Lasers - 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 Spatio-temporal Dynamics of Semiconductor Lasers write by Ortwin Hess. This book was released on 1996. Spatio-temporal Dynamics of Semiconductor Lasers available in PDF, EPUB and Kindle.
Spatio-Temporal Modeling and Device Optimization of Passively Mode-Locked Semiconductor Lasers
Spatio-Temporal Modeling and Device Optimization of Passively Mode-Locked Semiconductor Lasers - 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 Spatio-Temporal Modeling and Device Optimization of Passively Mode-Locked Semiconductor Lasers write by Stefan Meinecke. This book was released on 2022-03-26. Spatio-Temporal Modeling and Device Optimization of Passively Mode-Locked Semiconductor Lasers available in PDF, EPUB and Kindle. This thesis investigates passively mode-locked semiconductor lasers by numerical methods. The understanding and optimization of such devices is crucial to the advancement of technologies such as optical data communication and dual comb spectroscopy. The focus of the thesis is therefore on the development of efficient numerical models, which are able both to perform larger parameter studies and to provide quantitative predictions. Along with that, visualization and evaluation techniques for the rich spatio-temporal laser dynamics are developed; these facilitate the physical interpretation of the observed features. The investigations in this thesis revolve around two specific semiconductor devices, namely a monolithically integrated three-section tapered quantum-dot laser and a V-shaped external cavity laser. In both cases, the simulations closely tie in with experimental results, which have been obtained in collaboration with the TU Darmstadt and the ETH Zurich. Based on the successful numerical reproduction of the experimental findings, the emission dynamics of both lasers can be understood in terms of the cavity geometry and the active medium dynamics. The latter, in particular, highlights the value of the developed simulation tools, since the fast charge-carrier dynamics are generally not experimentally accessible during mode-locking operation. Lastly, the numerical models are used to perform laser design explorations and thus to derive recommendations for further optimizations.
Analysis of Spatio-Temporal Phenomena in High-Brightness Diode Lasers using Numerical Simulations
Analysis of Spatio-Temporal Phenomena in High-Brightness Diode Lasers using Numerical Simulations - 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 Analysis of Spatio-Temporal Phenomena in High-Brightness Diode Lasers using Numerical Simulations write by Anissa Zeghuzi. This book was released on 2020-10-22. Analysis of Spatio-Temporal Phenomena in High-Brightness Diode Lasers using Numerical Simulations available in PDF, EPUB and Kindle. Broad-area lasers are edge-emitting semiconductor lasers with a wide lateral emission aperture. This feature enables high output powers but also diminishes the lateral beam quality and results in their inherently non-stationary behavior. Research in the area is driven by application, and the main objective is to increase the brightness, which includes both output power and lateral beam quality. To understand the underlying spatio-temporal phenomena and to apply this knowledge in order to reduce costs for brightness optimization, a self-consistent simulation tool taking all essential processes into account is vital. Firstly, in this work a quasi-three-dimensional opto-electronic and thermal model is presented that describes essential qualitative characteristics of real devices well. Time-dependent traveling-wave equations are utilized to characterize the inherently non-stationary optical fields, which are coupled to dynamic rate equations for the excess carriers in the active region. This model is extended by an injection-current-density model to accurately include lateral current spreading and spatial hole burning. Furthermore, a temperature model is presented that includes short-time local heating near the active region as well as the formation of a stationary temperature profile. Secondly, the reasons of brightness degradation, i.e. the origins of power saturation and the spatially modulated field profile, are investigated. And lastly, designs that mitigate those effects limiting the lateral brightness under pulsed and continuous-wave operation are discussed. Amongst those designs a novel “chessboard laser” is presented that utilizes longitudinal-lateral gain-loss modulation and an additional phase tailoring to obtain a very low far-field divergence.
Semiconductor Lasers
Semiconductor Lasers - 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 Semiconductor Lasers write by Junji Ohtsubo. This book was released on 2017-05-03. Semiconductor Lasers available in PDF, EPUB and Kindle. This book describes the fascinating recent advances made concerning the chaos, stability and instability of semiconductor lasers, and discusses their applications and future prospects in detail. It emphasizes the dynamics in semiconductor lasers by optical and electronic feedback, optical injection, and injection current modulation. Applications of semiconductor laser chaos, control and noise, and semiconductor lasers are also demonstrated. Semiconductor lasers with new structures, such as vertical-cavity surface-emitting lasers and broad-area semiconductor lasers, are intriguing and promising devices. Current topics include fast physical number generation using chaotic semiconductor lasers for secure communication, development of chaos, quantum-dot semiconductor lasers and quantum-cascade semiconductor lasers, and vertical-cavity surface-emitting lasers. This fourth edition has been significantly expanded to reflect the latest developments. The fundamental theory of laser chaos and the chaotic dynamics in semiconductor lasers are discussed, but also for example the method of self-mixing interferometry in quantum-cascade lasers, which is indispensable in practical applications. Further, this edition covers chaos synchronization between two lasers and the application to secure optical communications. Another new topic is the consistency and synchronization property of many coupled semiconductor lasers in connection with the analogy of the dynamics between synaptic neurons and chaotic semiconductor lasers, which are compatible nonlinear dynamic elements. In particular, zero-lag synchronization between distant neurons plays a crucial role for information processing in the brain. Lastly, the book presents an application of the consistency and synchronization property in chaotic semiconductor lasers, namely a type of neuro-inspired information processing referred to as reservoir computing.
