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Monolithic Diode Laser Arrays


Monolithic Diode Laser Arrays
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Monolithic Diode Laser Arrays


Monolithic Diode Laser Arrays
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Author : Nils W. Carlson
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06

Monolithic Diode Laser Arrays written by Nils W. Carlson and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.


Over the last two decades, the search for a compact, high-power semiconductor source has produced many designs and concepts for monolithic diode-laser arrays and optical amplifiers. However, only a few design approaches have emerged with the potential for producing high-power, high-brightness monolithic sources. Although semiconductor-diode lasers are the most compact, highest gain and most efficient laser sources, challenges remain in developing structures that will produce high-quality, diffraction-limited output beams. This book presents and analyzes the results of work performed over the last twenty years in the development of high-brightness diode-laser arrays.



Tailoring The Emission Of Stripe Array Diode Lasers With External Cavities To Enable Nonlinear Frequency Conversion


Tailoring The Emission Of Stripe Array Diode Lasers With External Cavities To Enable Nonlinear Frequency Conversion
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Author : Andreas Jechow
language : en
Publisher: Universitätsverlag Potsdam
Release Date : 2009

Tailoring The Emission Of Stripe Array Diode Lasers With External Cavities To Enable Nonlinear Frequency Conversion written by Andreas Jechow and has been published by Universitätsverlag Potsdam this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Science categories.


A huge number of applications require coherent radiation in the visible spectral range. Since diode lasers are very compact and efficient light sources, there exists a great interest to cover these applications with diode laser emission. Despite modern band gap engineering not all wavelengths can be accessed with diode laser radiation. Especially in the visible spectral range between 480 nm and 630 nm no emission from diode lasers is available, yet. Nonlinear frequency conversion of near-infrared radiation is a common way to generate coherent emission in the visible spectral range. However, radiation with extraordinary spatial temporal and spectral quality is required to pump frequency conversion. Broad area (BA) diode lasers are reliable high power light sources in the near-infrared spectral range. They belong to the most efficient coherent light sources with electro-optical efficiencies of more than 70%. Standard BA lasers are not suitable as pump lasers for frequency conversion because of their poor beam quality and spectral properties. For this purpose, tapered lasers and diode lasers with Bragg gratings are utilized. However, these new diode laser structures demand for additional manufacturing and assembling steps that makes their processing challenging and expensive. An alternative to BA diode lasers is the stripe-array architecture. The emitting area of a stripe-array diode laser is comparable to a BA device and the manufacturing of these arrays requires only one additional process step. Such a stripe-array consists of several narrow striped emitters realized with close proximity. Due to the overlap of the fields of neighboring emitters or the presence of leaky waves, a strong coupling between the emitters exists. As a consequence, the emission of such an array is characterized by a so called supermode. However, for the free running stripe-array mode competition between several supermodes occurs because of the lack of wavelength stabilization. This leads to power fluctuations, spectral instabilities and poor beam quality. Thus, it was necessary to study the emission properties of those stripe-arrays to find new concepts to realize an external synchronization of the emitters. The aim was to achieve stable longitudinal and transversal single mode operation with high output powers giving a brightness sufficient for efficient nonlinear frequency conversion. For this purpose a comprehensive analysis of the stripe-array devices was done here. The physical effects that are the origin of the emission characteristics were investigated theoretically and experimentally. In this context numerical models could be verified and extended. A good agreement between simulation and experiment was observed. One way to stabilize a specific supermode of an array is to operate it in an external cavity. Based on mathematical simulations and experimental work, it was possible to design novel external cavities to select a specific supermode and stabilize all emitters of the array at the same wavelength. This resulted in stable emission with 1 W output power, a narrow bandwidth in the range of 2 MHz and a very good beam quality with M²<1.5. This is a new level of brightness and brilliance compared to other BA and stripe-array diode laser systems. The emission from this external cavity diode laser (ECDL) satisfied the requirements for nonlinear frequency conversion. Furthermore, a huge improvement to existing concepts was made. In the next step newly available periodically poled crystals were used for second harmonic generation (SHG) in single pass setups. With the stripe-array ECDL as pump source, more than 140 mW of coherent radiation at 488 nm could be generated with a very high opto-optical conversion efficiency. The generated blue light had very good transversal and longitudinal properties and could be used to generate biphotons by parametric down-conversion. This was feasible because of the improvement made with the infrared stripe-array diode lasers due to the development of new physical concepts.



High Power Diode Lasers


High Power Diode Lasers
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Author : Roland Diehl
language : en
Publisher: Springer Science & Business Media
Release Date : 2003-07-01

High Power Diode Lasers written by Roland Diehl and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-07-01 with Science categories.


Methods of design and fabrication of high-power diode lasers using proven semiconductor technologies are described in this book. The latter include epitaxy and optical lithography, mounting on heat sinks, beam forming with micro-optics and coupling to optical fibers, and reliability testing. Direct applications of high-power diode lasers in materials processing and for pumping hitherto unknown solid-state laser systems are presented in a comprehensive fashion. Thus, this book is an invaluable source of information for all scientists and engineers designing laser systems and applying the laser as a reliable and economic tool in a multitude of environments.



Near Diffraction Limited High Power Pulsed And Cw Antiguided Semiconductor Laser Arrays


Near Diffraction Limited High Power Pulsed And Cw Antiguided Semiconductor Laser Arrays
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Author : Haiquan Yang
language : en
Publisher:
Release Date : 1999

Near Diffraction Limited High Power Pulsed And Cw Antiguided Semiconductor Laser Arrays written by Haiquan Yang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.




Official Gazette Of The United States Patent And Trademark Office


Official Gazette Of The United States Patent And Trademark Office
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Author : United States. Patent and Trademark Office
language : en
Publisher:
Release Date : 1998

Official Gazette Of The United States Patent And Trademark Office written by United States. Patent and Trademark Office and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Patents categories.




Optoelectronics And Fiber Optic Technology


Optoelectronics And Fiber Optic Technology
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Author : Ray Tricker
language : en
Publisher: Elsevier
Release Date : 2002-05-01

Optoelectronics And Fiber Optic Technology written by Ray Tricker and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-05-01 with Technology & Engineering categories.


Topical areas such as optoelectronics in LANs and WANs, cable TV systems, and the global fiber-optic highway make this book essential reading for anyone who needs to keep up with the technology of modern data communications.*Covers selection and application of the key technologies*A down-to-earth introduction to a cutting-edge technology*Covers all the main engineering applications with a minimum of maths



Laser Spectroscopy 1


Laser Spectroscopy 1
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Author : Wolfgang Demtröder
language : en
Publisher: Springer
Release Date : 2014-05-07

Laser Spectroscopy 1 written by Wolfgang Demtröder and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-07 with Science categories.


Keeping abreast of the latest techniques and applications, this new edition of the standard reference and graduate text on laser spectroscopy has been completely revised and expanded. While the general concept is unchanged, the new edition features a broad array of new material, e.g., ultrafast lasers (atto- and femtosecond lasers) and parametric oscillators, coherent matter waves, Doppler-free Fourier spectroscopy with optical frequency combs, interference spectroscopy, quantum optics, the interferometric detection of gravitational waves and still more applications in chemical analysis, medical diagnostics, and engineering.



Laser Spectroscopy Viii


Laser Spectroscopy Viii
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Author : Willy Persson
language : en
Publisher: Springer
Release Date : 2013-11-11

Laser Spectroscopy Viii written by Willy Persson and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-11 with Science categories.


The Eighth International Conference on Laser Spectroscopy (EICOLS '87) was held at the Sunwing Hotel in A.re, Sweden, June 22-26; 1987. Fol lowing the traditions ef its predecessors at Vail, Megeve, Jackson Lake, Rottach-Egern, Jasper Park, Interlaken and Maui the intent of EICOLS '87 was to provide a forum for active scientists to meet in an informal at mosphere to discuss recent developments in laser spectroscopy. The scenic and remote location of the conference venue greatly stimulated a lively and relaxed exchange of information and ideas. The conference was attended by 227 scientists from 20 countries includ ing Australia, Austria, Canada, the People's Republic of China, Denmark, Finland, France, the Federal Repulic of Germany, Israel, Italy, Japan, The Netherlands, New Zealand, Norway, Poland, the Soviet Union, Sweden, Switzerland, the United Kingdom and the United States. The scientific program included 14 topical sessions with 50 invited talks, ranging in length from 20 to 40 minutes. About 70 additional in vited contributions were presented in two evening poster sessions. A third evening session included 4 oral and 18 poster post-deadline presentations.



Understanding Lasers


Understanding Lasers
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Author : Jeff Hecht
language : en
Publisher: John Wiley & Sons
Release Date : 2011-09-20

Understanding Lasers written by Jeff Hecht and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-09-20 with Technology & Engineering categories.


Updated to reflect advancements since the publication of the previous edition, Understanding Lasers: An Entry-Level Guide, 3rd Edition is an introduction to lasers and associated equipment. You need only a minimal background in algebra to understand the nontechnical language in this book, which is a practical, easy-to-follow guide for beginners. By studying the conceptual drawings, tables, and multiple-choice quizzes with answers provided at the back of the book you can understand applications of semiconductor lasers, solid-state lasers, and gas lasers for information processing, medicine, communications, industry, and military systems.



Tunable External Cavity Diode Lasers


Tunable External Cavity Diode Lasers
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Author : Cunyun Ye
language : en
Publisher: World Scientific
Release Date : 2004-12-01

Tunable External Cavity Diode Lasers written by Cunyun Ye and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-12-01 with Science categories.


This is the first book on tunable external cavity semiconductor diode lasers, providing an up-to-date survey on the physics, technology, and performance of widely applicable coherent radiation sources of tunable external cavity diode lasers. The purpose is to provide a thorough account of the state-of-the-art of tunable external cavity diode lasers which is achieved by combining this account with basic concepts of semiconductor diode lasers and its tunability with monolithic structures. The practical and accessible information in this volume will enable the reader to study external cavity diode laser, to build up the systems of external cavity diode laser as well as to develop advanced systems for their particular applications. This book will appeal to undergraduate and graduate students, scientists and engineers alike.