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Author: OWEN.. DOYLE
Publisher:
ISBN:
Category :
Languages : fr
Pages : 140
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Book Description
LE COUPLAGE ENTRE LA PHASE ET L'AMPLITUDE DU CHAMP DANS UN LASER SEMI-CONDUCTEUR EST ETUDIE THEORIQUEMENT ET EXPERIMENTALEMENT. CETTE ETUDE PORTE PLUS PARTICULIEREMENT SUR L'INFLUENCE DE LA STRUCTURE ET CONDUIT A LA DEFINITION D'UN PARAMETRE MODAL GENERALISANT LE PARAMETRE CONSTITUTIF DU COUPLAGE APPELE FACTEUR D'ELARGISSEMENT SPECTRAL. CE NOUVEAU PARAMETRE EST EXPRIME PAR DES RELATIONS INTEGRALES PERMETTANT DE DEDUIRE L'INFLUENCE DES CONFINEMENTS OPTIQUE ET ELECTRONIQUE. EN PARTICULIER LE ROLE DES VARIATIONS SPATIALES DU FACTEUR D'ELARGISSEMENT EST MIS EN EVIDENCE. LA DEPENDANCE TEMPORELLE DU COUPLAGE JOUE UN ROLE IMPORTANT BIEN QU'ELLE N'APPARAISSE PAS DANS LES MECANISMES DE BRUIT DETERMINANT LA LARGEUR SPECTRALE. ELLE APPARAIT PAR CONTRE, LORS D'UNE MODULATION SINUSOIDALE DU COURANT INJECTE, DANS LE RAPPORT DES EXCURSIONS SIMULTANEES EN FREQUENCE OPTIQUE ET EN PUISSANCE, APPELE CPR. UNE METHODE ORIGINALE PERMETTANT LA DETERMINATION DE LA PHASE ET DU MODULE DU CPR EST UTILISEE POUR L'ETUDE DYNAMIQUE DE LASERS DE DIFFERENTES STRUCTURES: HITACHI HLP1400 (0,85 MICRON) ET CNET DFB (1,5 MICRON). DANS LES DEUX CAS, LA PHASE DIFFERE DE CELLE PREVUE PAR UN MODELE SPATIALEMENT HOMOGENE.
Author: OWEN.. DOYLE
Publisher:
ISBN:
Category :
Languages : fr
Pages : 140
Get Book Here
Book Description
LE COUPLAGE ENTRE LA PHASE ET L'AMPLITUDE DU CHAMP DANS UN LASER SEMI-CONDUCTEUR EST ETUDIE THEORIQUEMENT ET EXPERIMENTALEMENT. CETTE ETUDE PORTE PLUS PARTICULIEREMENT SUR L'INFLUENCE DE LA STRUCTURE ET CONDUIT A LA DEFINITION D'UN PARAMETRE MODAL GENERALISANT LE PARAMETRE CONSTITUTIF DU COUPLAGE APPELE FACTEUR D'ELARGISSEMENT SPECTRAL. CE NOUVEAU PARAMETRE EST EXPRIME PAR DES RELATIONS INTEGRALES PERMETTANT DE DEDUIRE L'INFLUENCE DES CONFINEMENTS OPTIQUE ET ELECTRONIQUE. EN PARTICULIER LE ROLE DES VARIATIONS SPATIALES DU FACTEUR D'ELARGISSEMENT EST MIS EN EVIDENCE. LA DEPENDANCE TEMPORELLE DU COUPLAGE JOUE UN ROLE IMPORTANT BIEN QU'ELLE N'APPARAISSE PAS DANS LES MECANISMES DE BRUIT DETERMINANT LA LARGEUR SPECTRALE. ELLE APPARAIT PAR CONTRE, LORS D'UNE MODULATION SINUSOIDALE DU COURANT INJECTE, DANS LE RAPPORT DES EXCURSIONS SIMULTANEES EN FREQUENCE OPTIQUE ET EN PUISSANCE, APPELE CPR. UNE METHODE ORIGINALE PERMETTANT LA DETERMINATION DE LA PHASE ET DU MODULE DU CPR EST UTILISEE POUR L'ETUDE DYNAMIQUE DE LASERS DE DIFFERENTES STRUCTURES: HITACHI HLP1400 (0,85 MICRON) ET CNET DFB (1,5 MICRON). DANS LES DEUX CAS, LA PHASE DIFFERE DE CELLE PREVUE PAR UN MODELE SPATIALEMENT HOMOGENE.
Author: Junji Ohtsubo
Publisher: Springer
ISBN: 3319561383
Category : Science
Languages : en
Pages : 679
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Book Description
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.
Author: Toshiaki Suhara
Publisher: CRC Press
ISBN: 0824752929
Category : Science
Languages : en
Pages : 310
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Book Description
Ranging from fundamental theoretical concepts to advanced device technologies, this reference/text explores the engineering, characteristics, and performance of specific semiconductor lasers. It defines key principles in electromagnetics, optoelectronics, and laser implementation for novel applications in optical communications, storage, processing, measurement, and sensing. This text prepares students for advanced experimental and theoretical research in semiconductor laser technology and provides the only comprehensive, systematic, and concise description of semiconductor lasers available for an understanding of the physics and parameters of laser operation and function.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 456
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Zujie Fang
Publisher: Springer
ISBN: 9811052573
Category : Science
Languages : en
Pages : 317
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Book Description
This book systematically introduces the single frequency semiconductor laser, which is widely used in many vital advanced technologies, such as the laser cooling of atoms and atomic clock, high-precision measurements and spectroscopy, coherent optical communications, and advanced optical sensors. It presents both the fundamentals and characteristics of semiconductor lasers, including basic F-P structure and monolithic integrated structures; interprets laser noises and their measurements; and explains mechanisms and technologies relating to the main aspects of single frequency lasers, including external cavity lasers, frequency stabilization technologies, frequency sweeping, optical phase locked loops, and so on. It paints a clear, physical picture of related technologies and reviews new developments in the field as well. It will be a useful reference to graduate students, researchers, and engineers in the field.
Author: Klaus Petermann
Publisher: Springer Science & Business Media
ISBN: 9780792312048
Category : Technology & Engineering
Languages : en
Pages : 340
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Book Description
Laser diodes represent a key element in the emerging field of opto electronics which includes, for example, optical communication, optical sensors or optical disc systems. For all these applications, information is either transmitted, stored or read out. The performance of these systems depends to a great deal on the performance of the laser diode with regard to its modulation and noise characteristics. Since the modulation and noise characteristics of laser diodes are of vital importance for optoelectronic systems, the need for a book arises that concentrates on this subject. This book thus closes the gap between books on the device physics of semiconductor lasers and books on system design. Complementary to the specific topics concerning modulation and noise, the first part of this book reviews the basic laser characteristics, so that even a reader without detailed knowledge of laser diodes may follow the text. In order to understand the book, the reader should have a basic knowledge of electronics, semiconductor physics and optical communica tions. The work is primarily written for the engineer or scientist working in the field of optoelectronics; however, since the book is self-contained and since it contains a lot of numerical examples, it may serve as a textbook for graduate students. In the field of laser diode modulation and noise a vast amount has been published during recent years. Even though the book contains more than 600 references, only a small part of the existing literature is included.
Author:
Publisher:
ISBN:
Category : Diodes, Semiconductor
Languages : en
Pages : 698
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Book Description
Author: Hooshang Ghafouri-shiraz
Publisher: World Scientific
ISBN: 1783261099
Category : Technology & Engineering
Languages : en
Pages : 699
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Book Description
Optical communications technology is growing increasingly in importance, with a rapid pace of development. Innovative optical devices have emerged from the integration of semiconductor laser diodes, amplifiers and filters with optical waveguide technology. This well-researched volume traces the evolution of semiconductor laser amplifiers (SLAs) from these technologies. Focusing on the principle applications of SLAs, the author illustrates the growing importance of these functional components in the future of optical communications systems.This book will provide engineering and science students with a basic understanding of laser diode and optical amplification through the analysis of the performance characteristics of these devices both in theory and application. Practising device engineers wishing to consolidate their knowledge in lightwave technology will also find this book an invaluable reference./a
Author: Jungsang Kim
Publisher: Springer Science & Business Media
ISBN: 9783540677178
Category : Technology & Engineering
Languages : en
Pages : 270
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Book Description
Supplies readers with the basic knowledge and guidance for the application of new lasers and light-emitting devices. The first part of the book discusses the generation of sub-shot-noise light in macroscopic pn junction light emitting devices, the second part is on the application of squeezed light in high-precision measurement, the third part concerns the Coulomb blockade effect in a mesoscopic pn junction and generation of single photon states, and the last part is on the detection of single photons using a visible light photon counter.
Author: Stefan Meinecke
Publisher: Springer Nature
ISBN: 3030962482
Category : Technology & Engineering
Languages : en
Pages : 264
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Book Description
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.
