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Author: En-Kuang Tien
Publisher:
ISBN: 9781124187006
Category :
Languages : en
Pages : 121
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Book Description
Silicon photonics is a subject of growing interest with the potential of delivering planar electro-optical devices with chip scale integration. The past ten years have provided new developments in this area including novel devices utilizing the linear, nonlinear, and semiconductor behaviors of silicon. This thesis is dedicated to the investigation of nonlinear properties of silicon relevant to chip scale planar optical devices. In particular, this thesis is focused on utilizing silicon nonlinearities to demonstrate ultrafast pulse generation, ultrafast pulse characterization, and wavelength conversion suitable for long wavelength applications. One of the impediments of silicon photonics is the presence of nonlinear losses. Indeed, nonlinear losses mitigate the development of silicon based laser and amplifiers. The first part of this research investigates the transient behavior of these nonlinear losses, two photon absorption (TPA) and free-carrier effects, and utilizes them for ultrafast pulse generation and mode-locking. Particular achievements include identification of the dominant nonlinear losses and demonstration of mode-locked lasers. As an extension of this research, a dual-wavelength laser is demonstrated using Raman scattering in silicon. In the second part of this work, a chip-scale pulse characterization method utilizing Kerr nonlinearity in silicon is established and a pulse retrieval algorithm is optimized for chip-scale devices. This is the first frequency resolved optical gating (FROG) system demonstrated in silicon, which shows the ability to measure ultrafast pulses without the phase matching requirement. With the short interaction length and the low dispersion, dispersion engineered waveguides can improve the resolution over a wide bandwidth. In the last part of this thesis, wavelength conversion capability via four-wave-mixing at mid-infrared (2micron-6micron) is investigated since TPA is negligible for wavelengths beyond 2℗æm. In particular, Kerr effect and waveguide design are studied to accomplish wavelength conversions in mid-infrared. Since conventional cladding material, silica, is opaque in mid-infrared, the needs for new waveguide designs and new materials are highlighted and the potential candidate materials are studied. The study shows that silicon-based wavelength conversion can increase the capabilities of mid-infrared application by converting the mature detection and source at communication wavelengths to mid-infrared wavelengths.
Author: En-Kuang Tien
Publisher:
ISBN: 9781124187006
Category :
Languages : en
Pages : 121
Get Book Here
Book Description
Silicon photonics is a subject of growing interest with the potential of delivering planar electro-optical devices with chip scale integration. The past ten years have provided new developments in this area including novel devices utilizing the linear, nonlinear, and semiconductor behaviors of silicon. This thesis is dedicated to the investigation of nonlinear properties of silicon relevant to chip scale planar optical devices. In particular, this thesis is focused on utilizing silicon nonlinearities to demonstrate ultrafast pulse generation, ultrafast pulse characterization, and wavelength conversion suitable for long wavelength applications. One of the impediments of silicon photonics is the presence of nonlinear losses. Indeed, nonlinear losses mitigate the development of silicon based laser and amplifiers. The first part of this research investigates the transient behavior of these nonlinear losses, two photon absorption (TPA) and free-carrier effects, and utilizes them for ultrafast pulse generation and mode-locking. Particular achievements include identification of the dominant nonlinear losses and demonstration of mode-locked lasers. As an extension of this research, a dual-wavelength laser is demonstrated using Raman scattering in silicon. In the second part of this work, a chip-scale pulse characterization method utilizing Kerr nonlinearity in silicon is established and a pulse retrieval algorithm is optimized for chip-scale devices. This is the first frequency resolved optical gating (FROG) system demonstrated in silicon, which shows the ability to measure ultrafast pulses without the phase matching requirement. With the short interaction length and the low dispersion, dispersion engineered waveguides can improve the resolution over a wide bandwidth. In the last part of this thesis, wavelength conversion capability via four-wave-mixing at mid-infrared (2micron-6micron) is investigated since TPA is negligible for wavelengths beyond 2℗æm. In particular, Kerr effect and waveguide design are studied to accomplish wavelength conversions in mid-infrared. Since conventional cladding material, silica, is opaque in mid-infrared, the needs for new waveguide designs and new materials are highlighted and the potential candidate materials are studied. The study shows that silicon-based wavelength conversion can increase the capabilities of mid-infrared application by converting the mature detection and source at communication wavelengths to mid-infrared wavelengths.
Author: Jun Ye
Publisher: Springer Science & Business Media
ISBN: 0387237917
Category : Science
Languages : en
Pages : 373
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Book Description
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.
Author: Sonia Boscolo
Publisher: John Wiley & Sons
ISBN: 1119088127
Category : Technology & Engineering
Languages : en
Pages : 486
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Book Description
This book is a contemporary overview of selected topics in fiber optics. It focuses on the latest research results on light wave manipulation using nonlinear optical fibers, with the aim of capturing some of the most innovative developments on this topic. The book’s scope covers both fundamentals and applications from both theoretical and experimental perspectives, with topics including linear and nonlinear effects, pulse propagation phenomena and pulse shaping, solitons and rogue waves, novel optical fibers, supercontinuum generation, polarization management, optical signal processing, fiber lasers, optical wave turbulence, light propagation in disordered fiber media, and slow and fast light. With contributions from leading-edge scientists in the field of nonlinear photonics and fiber optics, they offer an overview of the latest advances in their own research area. The listing of recent research papers at the end of each chapter is useful for researchers using the book as a reference. As the book addresses fundamental and practical photonics problems, it will also be of interest to, and benefit, broader academic communities, including areas such as nonlinear science, applied mathematics and physics, and optical engineering. It offers the reader a wide and critical overview of the state-of-the-art within this practical – as well as fundamentally important and interesting – area of modern science, providing a useful reference which will encourage further research and advances in the field.
Author: Joshua Charles Vaughan
Publisher:
ISBN:
Category :
Languages : en
Pages : 182
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Book Description
(Cont.) The pulse timing, shape, phase, and spectral content within all beams may be specified, yielding an unprecedented level of control over the interacting fields in nonlinear spectroscopic experiments. Heterodyne detection and phase cycling of the nonlinear signal is easily implemented due to the excellent phase stability between each output beam. This approach combines the waveform generation capabilities of magnetic resonance spectroscopy with the wavevector specification and phase-matching of nonlinear optical spectroscopy, yielding the signal selectivity and control capabilities of both. Results on three prototype systems will be used to illustrate the exciting possibilities with this method.
Author: Giancarlo C. Righini
Publisher: Elsevier
ISBN: 0323985807
Category : Technology & Engineering
Languages : en
Pages : 564
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Book Description
Advances in Nonlinear Photonics combines fundamental principles with an overview of the latest developments. The book is suitable for the multidisciplinary audience of photonics researchers and practitioners in academia and R&D, including materials scientists and engineers, applied physicists, chemists, etc. As nonlinear phenomena are at the core of photonic devices and may enable future applications such as all-optical switching, all-optical signal processing and quantum photonics, this book provides an overview of key concepts. In addition, the book reviews the most important advances in the field and how nonlinear processes may be exploited in different photonic applications. - Introduces fundamental principles of nonlinear phenomena and their application in materials and devices - Reviews and provides definitions of the latest research directions in the field of nonlinear photonics - Discusses the most important developments in materials and applications, including future prospects
Author: John P. Dakin
Publisher: CRC Press
ISBN: 1420012010
Category : Technology & Engineering
Languages : en
Pages : 1616
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Book Description
A field as diverse as optoelectronics needs a reference that is equally versatile. From basic physics and light sources to devices and state-of-the-art applications, the Handbook of Optoelectronics provides comprehensive, self-contained coverage of fundamental concepts and practical applications across the entire spectrum of disciplines encompassed by optoelectronics. The handbook unifies a broad array of current research areas with a forward-looking focus on systems and applications. Beginning with an introduction to the relevant principles of physics, materials science, engineering, and optics, the book explores the details of optoelectronic devices and techniques including semiconductor lasers, optical detectors and receivers, optical fiber devices, modulators, amplifiers, integrated optics, LEDs, and engineered optical materials. Applications and systems then become the focus, with sections devoted to industrial, medical, and commercial applications, communications, imaging and displays, sensing and data processing, spectroscopic analysis, the art of practical optoelectronics, and future prospects. This extensive resource comprises the efforts of more than 70 world-renowned experts from leading industrial and academic institutions around the world and includes many references to contemporary works. Whether used as a field reference, as a research tool, or as a broad and self-contained introduction to the field, the Handbook of Optoelectronics places everything you need in a unified, conveniently organized format.
Author: Bozhang Dong
Publisher: Springer Nature
ISBN: 3031178270
Category : Technology & Engineering
Languages : en
Pages : 206
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Book Description
This book provides guidelines and design rules for developing high-performance, low-cost, and energy-efficient quantum-dot (QD) lasers for silicon photonic integrated circuits (PIC), optical frequency comb generation, and quantum information systems. To this end, the nonlinear properties and dynamics of QD lasers on silicon are investigated in depth by both theoretical analysis and experiment. This book aims at addressing four issues encountered in developing silicon PIC: 1) The instability of laser emission caused by the chip-scale back-reflection. During photonic integration, the chip-scale back-reflection is usually responsible for the generation of severe instability (i.e., coherence collapse) from the on-chip source. As a consequence, the transmission performance of the chip could be largely degraded. To overcome this issue, we investigate the nonlinear properties and dynamics of QD laser on Si in this book to understand how can it be applied to isolator-free photonic integration in which the expensive optical isolator can be avoided. Results show that the QD laser exhibits a high degree of tolerance for chip-scale back-reflections in absence of any instability, which is a promising solution for isolator-free applications. 2) The degradation of laser performance at a high operating temperature. In this era of Internet-of-Thing (IoT), about 40% of energy is consumed for cooling in the data center. In this context, it is important to develop a high-temperature continuous-wave (CW) emitted laser source. In this book, we introduce a single-mode distributed feedback (DFB) QD laser with a design of optical wavelength detuning (OWD). By taking advantage of the OWD technique and the high-performance QD with high thermal stability, all the static and dynamical performances of the QD device are improved when the operating temperature is high. This study paves the way for developing uncooled and isolator-free PIC. 3) The limited phase noise level and optical bandwidth of the laser are the bottlenecks for further increasing the transmission capacity. To improve the transmission capacity and meet the requirement of the next generation of high-speed optical communication, we introduce the QD-based optical frequency comb (OFC) laser in this book. Benefiting from the gain broadening effect and the low-noise properties of QD, the OFC laser is realized with high optical bandwidth and low phase noise. We also provide approaches to further improve the laser performance, including the external optical feedback and the optical injection. 4) Platform with rich optical nonlinearities is highly desired by future integrated quantum technologies. In this book, we investigate the nonlinear properties and four-wave mixing (FWM) of QD laser on Si. This study reveals that the FWM efficiency of QD laser is more than ten times higher than that of quantum-well laser, which gives insight into developing a QD-based silicon platform for quantum states of light generation. Based on the results in this book, scientists, researchers, and engineers can come up with an informed judgment in utilizing the QD laser for applications ranging from classical silicon PIC to integrated quantum technologies.
Author: Andrew M. Weiner
Publisher: John Wiley & Sons
ISBN: 1118211472
Category : Science
Languages : en
Pages : 529
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Book Description
A comprehensive treatment of ultrafast optics This book fills the need for a thorough and detailed account of ultrafast optics. Written by one of the most preeminent researchers in the field, it sheds new light on technology that has already had a revolutionary impact on precision frequency metrology, high-speed electrical testing, biomedical imaging, and in revealing the initial steps in chemical reactions. Ultrafast Optics begins with a summary of ultrashort laser pulses and their practical applications in a range of real-world settings. Next, it reviews important background material, including an introduction to Fourier series and Fourier transforms, and goes on to cover: Principles of mode-locking Ultrafast pulse measurement methods Dispersion and dispersion compensation Ultrafast nonlinear optics: second order Ultrafast nonlinear optics: third order Mode-locking: selected advanced topics Manipulation of ultrashort pulses Ultrafast time-resolved spectroscopy Terahertz time-domain electromagnetics Professor Weiner's expertise and cutting-edge research result in a book that is destined to become a seminal text for engineers, researchers, and graduate students alike.
Author: Frank Träger
Publisher: Springer Science & Business Media
ISBN: 3642194095
Category : Science
Languages : en
Pages : 1704
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Book Description
This new edition features numerous updates and additions. Especially 4 new chapters on Fiber Optics, Integrated Optics, Frequency Combs and Interferometry reflect the changes since the first edition. In addition, major complete updates for the chapters: Optical Materials and Their Properties, Optical Detectors, Nanooptics, and Optics far Beyond the Diffraction Limit. Features Contains over 1000 two-color illustrations. Includes over 120 comprehensive tables with properties of optical materials and light sources. Emphasizes physical concepts over extensive mathematical derivations. Chapters with summaries, detailed index Delivers a wealth of up-to-date references.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 146
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Book Description
The development of multilayer optics for extreme ultraviolet (EUV) radiation has led to advancements in many areas of science and technology, including materials studies, EUV lithography, water window microscopy, plasma imaging, and orbiting solar physics imaging. Recent developments in femtosecond and attosecond EUV pulse generation from sources such as high harmonic generation lasers, combined with the elemental and chemical specificity provided by EUV radiation, are opening new opportunities to study fundamental dynamic processes in materials. Critical to these efforts is the design and fabrication of multilayer optics to transport, focus, shape and image these ultra-fast pulses This thesis describes the design, fabrication, characterization, and application of multilayer optics for EUV femtosecond and attosecond scientific studies. Multilayer mirrors for bandwidth control, pulse shaping and compression, tri-material multilayers, and multilayers for polarization control are described. Characterization of multilayer optics, including measurement of material optical constants, reflectivity of multilayer mirrors, and metrology of reflected phases of the multilayer, which is critical to maintaining pulse size and shape, were performed. Two applications of these multilayer mirrors are detailed in the thesis. In the first application, broad bandwidth multilayers were used to characterize and measure sub-100 attosecond pulses from a high harmonic generation source and was performed in collaboration with the Max-Planck institute for Quantum Optics and Ludwig- Maximilians University in Garching, Germany, with Professors Krausz and Kleineberg. In the second application, multilayer mirrors with polarization control are useful to study femtosecond spin dynamics in an ongoing collaboration with the T-REX group of Professor Parmigiani at Elettra in Trieste, Italy. As new ultrafast x-ray sources become available, for example free electron lasers, the multilayer designs described in this thesis can be extended to higher photon energies, and such designs can be used with those sources to enable new scientific studies, such as molecular bonding, phonon, and spin dynamics.
