Tailoring The Emission Of Stripe Array Diode Lasers With External Cavities To Enable Nonlinear Frequency Conversion
DOWNLOAD
Download Tailoring The Emission Of Stripe Array Diode Lasers With External Cavities To Enable Nonlinear Frequency Conversion PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Tailoring The Emission Of Stripe Array Diode Lasers With External Cavities To Enable Nonlinear Frequency Conversion book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Tailoring The Emission Of Stripe Array Diode Lasers With External Cavities To Enable Nonlinear Frequency Conversion
DOWNLOAD
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.
Electrical Electronics Abstracts
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1988
Electrical Electronics Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Electrical engineering categories.
High Power Diode Lasers
DOWNLOAD
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.
Femtosecond Optical Frequency Comb Principle Operation And Applications
DOWNLOAD
Author : Jun Ye
language : en
Publisher: Springer Science & Business Media
Release Date : 2005
Femtosecond Optical Frequency Comb Principle Operation And Applications written by Jun Ye 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 2005 with Science categories.
Over the last few years, there has been a convergence between the fields of ultrafast science, nonlinear optics, optical frequency metrology, and precision laser spectroscopy. These fields have been developing largely independently since the birth of the laser, reaching remarkable levels of performance. On the ultrafast frontier, pulses of only a few cycles long have been produced, while in optical spectroscopy, the precision and resolution have reached one part in Although these two achievements appear to be completely disconnected, advances in nonlinear optics provided the essential link between them. The resulting convergence has enabled unprecedented advances in the control of the electric field of the pulses produced by femtosecond mode-locked lasers. The corresponding spectrum consists of a comb of sharp spectral lines with well-defined frequencies. These new techniques and capabilities are generally known as “femtosecond comb technology. ” They have had dramatic impact on the diverse fields of precision measurement and extreme nonlinear optical physics. The historical background for these developments is provided in the Foreword by two of the pioneers of laser spectroscopy, John Hall and Theodor Hänsch. Indeed the developments described in this book were foreshadowed by Hänsch’s early work in the 1970s when he used picosecond pulses to demonstrate the connection between the time and frequency domains in laser spectroscopy. This work complemented the advances in precision laser stabilization developed by Hall.
Infrared And Raman Spectroscopic Imaging
DOWNLOAD
Author : Reiner Salzer
language : en
Publisher: John Wiley & Sons
Release Date : 2014-11-03
Infrared And Raman Spectroscopic Imaging written by Reiner Salzer 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 2014-11-03 with Science categories.
This second edition of the successful ready reference is updated and revised with approximately 30% new content to reflect the numerous instrumental developments and improvements, as well as the significant expansion of this rapidly developing field. For example, the combination of IR imaging with AFM has enhanced the achievable lateral resolution by an order of magnitude down to a few hundred nanometers, thus launching a multiplicity of new applications in material science. Furthermore, Raman and IR spectroscopic imaging have become key technologies for the life sciences and today contribute tremendously to a better and more detailed understanding of numerous biological and medical research topics. The topical structure of this new edition is now subdivided into four parts. The first treats the fundamentals of the instrumentation for infrared and Raman imaging and mapping and an overview on the chemometric tools for image analysis. The second part describes a wide varie-ty of applications ranging from biomedical via food, agriculture and plants to polymers and pharmaceuticals. This is followed by a description of imaging techniques operating beyond the diffraction limit, while the final part covers special methodical developments and their utility in specific fields. With its many valuable practical tips, this is a must-have overview for researchers in academic and industrial laboratories wishing to obtain reliable results with this method.
Wdm Technologies Active Optical Components
DOWNLOAD
Author : Achyut K. Dutta
language : en
Publisher: Academic Press
Release Date : 2002-09-27
Wdm Technologies Active Optical Components written by Achyut K. Dutta and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-09-27 with Science categories.
Intended for engineers and researchers engaged in various aspects of fiber optics communication, such as, optoelectronics, equipment/system design, and manufacturing. This book provides the reader with an understanding for optical components frequently used in the optical communication systems, essential building blocks of fiber optic networks.
Science Citation Index
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1995
Science Citation Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Science categories.
Vols. for 1964- have guides and journal lists.
Raman Fiber Lasers
DOWNLOAD
Author : Yan Feng
language : en
Publisher: Springer
Release Date : 2017-10-05
Raman Fiber Lasers written by Yan Feng and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-05 with Science categories.
This book serves as a comprehensive, up-to-date reference about this cutting-edge laser technology and its many new and interesting developments. Various aspects and trends of Raman fiber lasers are described in detail by experts in their fields. Raman fiber lasers have progressed quickly in the past decade, and have emerged as a versatile laser technology for generating high power light sources covering a spectral range from visible to mid-infrared. The technology is already being applied in the fields of telecommunication, astronomy, cold atom physics, laser spectroscopy, environmental sensing, and laser medicine. This book covers various topics relating to Raman fiber laser research, including power scaling, cladding and diode pumping, cascade Raman shifting, single frequency operation and power amplification, mid-infrared laser generation, specialty optical fibers, and random distributed feedback Raman fiber lasers. The book will appeal to scientists, students, and technicians seeking to understand the recent developments and future trends of this promising and multifaceted technology.
Semiconductor Optoelectronic Devices
DOWNLOAD
Author : Joachim Piprek
language : en
Publisher: Elsevier
Release Date : 2013-10-22
Semiconductor Optoelectronic Devices written by Joachim Piprek and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Technology & Engineering categories.
Optoelectronics has become an important part of our lives. Wherever light is used to transmit information, tiny semiconductor devices are needed to transfer electrical current into optical signals and vice versa. Examples include light emitting diodes in radios and other appliances, photodetectors in elevator doors and digital cameras, and laser diodes that transmit phone calls through glass fibers. Such optoelectronic devices take advantage of sophisticated interactions between electrons and light. Nanometer scale semiconductor structures are often at the heart of modern optoelectronic devices. Their shrinking size and increasing complexity make computer simulation an important tool to design better devices that meet ever rising perfomance requirements. The current need to apply advanced design software in optoelectronics follows the trend observed in the 1980's with simulation software for silicon devices. Today, software for technology computer-aided design (TCAD) and electronic design automation (EDA) represents a fundamental part of the silicon industry. In optoelectronics, advanced commercial device software has emerged recently and it is expected to play an increasingly important role in the near future. This book will enable students, device engineers, and researchers to more effectively use advanced design software in optoelectronics. - Provides fundamental knowledge in semiconductor physics and in electromagnetics, while helping to understand and use advanced device simulation software - Demonstrates the combination of measurements and simulations in order to obtain realistic results and provides data on all required material parameters - Gives deep insight into the physics of state-of-the-art devices and helps to design and analyze of modern optoelectronic devices
Applied Nanophotonics
DOWNLOAD
Author : Sergey V. Gaponenko
language : en
Publisher: Cambridge University Press
Release Date : 2019
Applied Nanophotonics written by Sergey V. Gaponenko and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Science categories.
An accessible yet rigorous introduction to nanophotonics, covering basic principles, technology, and applications in lighting, lasers, and photovoltaics. Providing a wealth of information on materials and devices, and over 150 color figures, it is the 'go-to' guide for students in electrical engineering taking courses in nanophotonics.