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Author : Klaus Böhringer
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (254 download)
Download or read book Microscopic Spatio-temporal Dynamics of Semiconductor Quantum Well Lasers and Amplifiers written by Klaus Böhringer and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Edeltraud Gehrig
Publisher : Springer Science & Business Media
ISBN 13 : 9783540007418
Total Pages : 252 pages
Book Rating : 4.0/5 (74 download)
Download or read book Spatio-Temporal Dynamics and Quantum Fluctuations in Semiconductor Lasers written by Edeltraud Gehrig and published by Springer Science & Business Media. This book was released on 2003-09-22 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Anissa Zeghuzi
Publisher : Cuvillier Verlag
ISBN 13 : 3736962894
Total Pages : 176 pages
Book Rating : 4.7/5 (369 download)
Download or read book Analysis of Spatio-Temporal Phenomena in High-Brightness Diode Lasers using Numerical Simulations written by Anissa Zeghuzi and published by Cuvillier Verlag. This book was released on 2020-10-22 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Joachim Piprek
Publisher : CRC Press
ISBN 13 : 1498749577
Total Pages : 887 pages
Book Rating : 4.4/5 (987 download)
Download or read book Handbook of Optoelectronic Device Modeling and Simulation written by Joachim Piprek and published by CRC Press. This book was released on 2017-10-12 with total page 887 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive survey of fundamental concepts and methods for optoelectronic device modeling and simulation. Gives a broad overview of concepts with concise explanations illustrated by real results. Compares different levels of modeling, from simple analytical models to complex numerical models. Discusses practical methods of model validation. Includes an overview of numerical techniques.
Author : Ortwin Hess
Publisher :
ISBN 13 :
Total Pages : 95 pages
Book Rating : 4.:/5 (353 download)
Download or read book Spatio-temporal Dynamics of Semiconductor Lasers written by Ortwin Hess and published by . This book was released on 1996 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stefan Meinecke
Publisher : Springer Nature
ISBN 13 : 3030962482
Total Pages : 264 pages
Book Rating : 4.0/5 (39 download)
Download or read book Spatio-Temporal Modeling and Device Optimization of Passively Mode-Locked Semiconductor Lasers written by Stefan Meinecke and published by Springer Nature. This book was released on 2022-03-26 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Ortwin Hess
Publisher : World Scientific
ISBN 13 : 1848165226
Total Pages : 182 pages
Book Rating : 4.8/5 (481 download)
Download or read book Photonics of Quantum-dot Nanomaterials and Devices written by Ortwin Hess and published by World Scientific. This book was released on 2012 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. Introduction to photonic quantum dot nanomaterials and devices. 1.1. Physical properties of quantum dots. 1.2. Active semiconductor gain media. 1.3. Quantum dot lasers. 1.4. Laser cavities -- 2. Theory of quantum dot light-matter dynamics. 2.1. Rate equations. 2.2. Maxwell-Bloch equations. 2.3. Quantum luminescence equations. 2.4. Quantum theoretical description -- 3. Light meets matter I: microscopic carrier effect. 3.1. Dynamics in the active charge carrier plasma. 3.2. Dynamic level hole burning. 3.3. Ultrashort nonlinear gain and index dynamics. 3.4. Conclusion -- 4. Light meets matter II: mesoscopic space-time dynamics. 4.1. Introduction: transverse and longitudinal mode dynamics. 4.2. Influence of the transverse degree of freedom and nano-structuring on nearfield dynamics and spectra. 4.3. Longitudinal modes. 4.4. Coupled space-time dynamics. 4.5. Conclusion -- 5. Performance and characterisation: properties on large time and length scales. 5.1. Introduction. 5.2. Spatial and spectral beam quality. 5.3. Dynamic amplitude phase coupling. 5.4. Conclusion -- 6. Nonlinear pulse propagation in semiconductor quantum dot lasers. 6.1. Dynamic shaping of short optical pulses. 6.2. Nonlinear femtosecond dynamics. 6.3. Conclusion -- 7. High-speed dynamics. 7.1. Mode-locking in multi-section quantum dot lasers. 7.2. Dependence of pulse duration on injection current, bias voltage and device geometry. 7.3. Radio frequency spectra of the emitted light. 7.4. Short-pulse optimisation. 7.5. Conclusion -- 8. Quantum dot random lasers. 8.1. Spatially inhomogeneous semiconductor quantum dot ensembles. 8.2. Coherence properties. 8.3. Random lasing in semiconductor quantum dot ensembles. 8.4. Conclusion -- 9. Coherence properties of quantum dot micro-cavity lasers. 9.1. Introduction. 9.2. Radial signal propagation and coherence trapping. 9.3. Influence of disorder. 9.4. Conclusions
Author : Xun Li
Publisher : Cambridge University Press
ISBN 13 : 0521875102
Total Pages : 375 pages
Book Rating : 4.5/5 (218 download)
Download or read book Optoelectronic Devices written by Xun Li and published by Cambridge University Press. This book was released on 2009-06-11 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Get hands-on experience of optoelectronic device design and simulation using numerical methods.
Author :
Publisher :
ISBN 13 :
Total Pages : 2692 pages
Book Rating : 4.3/5 (91 download)
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (742 download)
Download or read book Semiconductor Amplifiers and Laser Wave Length from Microscopic Physics to Device Simulation written by and published by . This book was released on 2003 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: This contract involved a major effort in bringing to, maturity, a first-principles theory of semiconductor lasers and amplifiers based on a fully microscopic description of the light semiconductor material coupling. Earlier successes at the microscopic physics level enabled us to obtain quantitative agreement with gain/index and linewidth enhancement spectra measured for a variety of Quantum Well structures. The microscopic studies were extended to materials lasing at eye safe and telecoms wavelengths. In particular, in a joint collaboration between Arizona, Marburg and Infineon of Munich, we were able to quantitatively verify gain spectra of novel Nitrogen-doped GaAs and InGaAS materials.
Author : Joachim Hamm
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (255 download)
Download or read book Spatio-temporal and Polarisation Dynamics of Semiconductor Microcavity Lasers written by Joachim Hamm and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Raimondas Ciegis
Publisher : Springer Science & Business Media
ISBN 13 : 0387097074
Total Pages : 287 pages
Book Rating : 4.3/5 (87 download)
Download or read book Parallel Scientific Computing and Optimization written by Raimondas Ciegis and published by Springer Science & Business Media. This book was released on 2008-10-08 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parallel Scientific Computing and Optimization introduces new developments in the construction, analysis, and implementation of parallel computing algorithms. This book presents 23 self-contained chapters, including survey chapters and surveys, written by distinguished researchers in the field of parallel computing. Each chapter is devoted to some aspects of the subject: parallel algorithms for matrix computations, parallel optimization, management of parallel programming models and data, with the largest focus on parallel scientific computing in industrial applications. This volume is intended for scientists and graduate students specializing in computer science and applied mathematics who are engaged in parallel scientific computing.
Author : Bin Zhao
Publisher :
ISBN 13 :
Total Pages : 266 pages
Book Rating : 4.:/5 (437 download)
Download or read book Threshold and Dynamics in Semiconductor Quantum Well Lasers written by Bin Zhao and published by . This book was released on 1994 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 424 pages
Book Rating : 4.:/5 (31 download)
Download or read book Conference Digest written by and published by . This book was released on 2000 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 422 pages
Book Rating : 4.3/5 (91 download)
Download or read book Conference on Lasers and Electro-optics Europe written by and published by . This book was released on 2000 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 920 pages
Book Rating : 4.F/5 ( download)
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roland Diehl
Publisher : Springer Science & Business Media
ISBN 13 : 3540478523
Total Pages : 420 pages
Book Rating : 4.5/5 (44 download)
Download or read book High-Power Diode Lasers written by Roland Diehl and published by Springer Science & Business Media. This book was released on 2003-07-01 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Starting from the basics of semiconductor lasers with emphasis on the generation of high optical output power the reader is introduced in a tutorial way to all key technologies required to fabricate high-power diode-laser sources. Various applications are exemplified.
