Optical Frequency Combs
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Optical Frequency Combs
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Author : Andrew Ellis
language : en
Publisher:
Release Date : 2024-06
Optical Frequency Combs written by Andrew Ellis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-06 with Technology & Engineering categories.
Femtosecond Optical Frequency Comb Principle Operation And Applications
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Author : Jun Ye
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-06-15
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 2006-06-15 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.
Optical Frequency Combs
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Author : Auro Michele Perego
language : en
Publisher: CRC Press
Release Date : 2024-11-27
Optical Frequency Combs written by Auro Michele Perego and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-11-27 with Science categories.
“Optical Frequency Combs: Trends in Sources and Applications” offers an overview of the recent advances on the physics, sources, and applications of optical frequency comb technology – one of the most exciting and fast developing research fields in photonics. The book aims at showcasing recent advances through contributions by key players in a multifaceted research ecosystem, and at the same time at providing a valuable service to the community, by offering an as much comprehensive as possible review which, at the same time, highlights challenges to be solved and promising future directions. The main topics covered include: (i) an overview of different platforms for optical frequency combs generation as fibre lasers, quantum cascade lasers, integrated microresonators and waveguides, fibre resonators, electro-optic modulators and nonlinear fibres, multicore fibres; (ii) a selection of applications in different technologies including sensing, spectroscopy, precision metrology and optical clocks, microscopy, radio-frequency generation, distance ranging, and optical communications; (iii) a diverse range of physical methods for frequency comb generation such as modulation, laser mode-locking techniques, dissipative solitons and parametric gain in nonlinear resonators, nonlinear spectral broadening and supercontinuum formation in waveguides. This book will be a valuable resource for academics, researchers, and postgraduate students working and interested in the field optical frequency combs, and more broadly in photonic technologies too. Key Features: · Edited by authorities in the field, with chapter contributions from subject area leading experts in academia and industry. · Up-to-date with the latest technological developments, applications, and fundamental research from the field. · Describes comb properties depending on source and generation platform, and comb specifications matching to application needs.
Numerical Modelling Of Optical Frequency Comb Generation In Microresonators
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Author : Hamish Randle
language : en
Publisher:
Release Date : 2012
Numerical Modelling Of Optical Frequency Comb Generation In Microresonators written by Hamish Randle and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Microresonators (Optoelectronics) categories.
Optical frequency combs are an exciting area of research with applications in Spectroscopy, optical sensing and telecommunications and in addition they have revolutionized the optical clock. Octave spanning frequency combs have been recently demonstrated using Microresonators. Made from a transparent material, these devices have spherical or toroidal shape and are typically between tens and hundreds of micrometers in size. The light is coupled in through a prism or fibre taper using evanescent wave coupling and circulates the cavity in highly confined whispering gallery modes. Due to the small modal cross section and long photon lifetimes there is a low threshold for nonlinear interaction. Researchers envisage these devices being used for low power microchip scale frequency comb sources in photonic devices. There has been much work on the experimental side of Microresonators, but little in the way of modelling, in particular the interesting nonlinear optical properties of these devices. This thesis describes a new method for modelling microresonator frequency combs, which reduces computational time compared to existing approaches. Two numerical simulation methods, the Newton-Raphson and split step Fourier, are chosen for their suitability to the study of steady state and dynamic regimes respectively. Simulations were performed using code written in MATLAB. We were able to simulate frequency combs with spans exceeding one octave of the spectral domain and containing over 1000 spectral modes, more than twice the number of modes than in any previously published study. The comb spectra were found to be in good agreement with experimental combs published by other researchers. Finally, some inroads were made to a numerical study of comb versatility.
Broad Bandwidth Optical Frequency Combs From Low Noise High Repetition Rate Semiconductor Mode Locked Lasers
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Author : Anthony C. Klee
language : en
Publisher:
Release Date : 2016
Broad Bandwidth Optical Frequency Combs From Low Noise High Repetition Rate Semiconductor Mode Locked Lasers written by Anthony C. Klee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Dispersion in the laser cavity is a primary limiter of the achievable bandwidth in the laser architectures covered in this dissertation. In the first part of this dissertation, an accurate self-referenced technique based on multi-heterodyne detection is developed for measuring the spectral phase of a mode-locked laser. This technique is used to characterize the dispersion in several semiconductor laser architectures. In the second part, this knowledge is applied to reduce the dispersion in a laser cavity using a programmable pulse shaper, and thus increase the laser's spectral bandwidth. We demonstrate a 10 GHz frequency comb with bandwidth spanning 5 THz, representing a twofold improvement over the previously achievable bandwidth. Finally, this laser is converted to a stand-alone system by reconfiguring it as a coupled opto-electronic oscillator and a novel stabilization scheme is presented.
Terabit Rate Transmission Using Optical Frequency Comb Sources
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Author : Pfeifle, Joerg
language : en
Publisher: KIT Scientific Publishing
Release Date : 2017-05-16
Terabit Rate Transmission Using Optical Frequency Comb Sources written by Pfeifle, Joerg and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-05-16 with Technology (General) categories.
Energy-efficient Tbit/s optical interconnects are key elements for future communication systems. Three novel optical frequency comb sources are investigated, which have the potential of being integrated in chip-scale Tbit/s transmitters. Such frequency combs provide a large number of carriers. The equidistance of the comb lines helps to minimize spectral guard bands. For each type of comb source, coherent data transmission experiments show the potential for Tbit/s data transmission rates.
Optical Frequency Comb Generation In Optical Fibres
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Author : Marina Zajnulina
language : en
Publisher:
Release Date : 2015
Optical Frequency Comb Generation In Optical Fibres written by Marina Zajnulina and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Optical frequency combs (OFC) constitute an array of phase-correlated equidistant spectral lines with nearly equal intensities over a broad spectral range. The adaptations of combs generated in mode-locked lasers proved to be highly efficient for the calibration of high-resolution (resolving power > 50000) astronomical spectrographs. The observation of different galaxy structures or the studies of the Milky Way are done using instruments in the low- and medium resolution range. To such instruments belong, for instance, the Multi Unit Spectroscopic Explorer (MUSE) being developed for the Very Large Telescope (VLT) of the European Southern Observatory (ESO) and the 4-metre Multi-Object Spectroscopic Telescope (4MOST) being in development for the ESO VISTA 4.1 m Telescope. The existing adaptations of OFC from mode-locked lasers are not resolvable by these instruments. Within this work, a fibre-based approach for generation of OFC specifically in the low- and medium resolution range is studied numerically. This approach consists of three optical fibres that are fed by two equally intense continuous-wave (CW) lasers. The first fibre is a conventional single-mode fibre, the second one is a suitably pumped amplifying Erbium-doped fibre with anomalous dispersion, and the third one is a low-dispersion highly nonlinear optical fibre. The evolution of a frequency comb in this system is governed by the following processes: as the two initial CW-laser waves with different frequencies propagate through the first fibre, they generate an initial comb via a cascade of four-wave mixing processes. The frequency components of the comb are phase-correlated with the original laser lines and have a frequency spacing that is equal to the initial laser frequency separation (LFS), i.e. the difference in the laser frequencies. In the time domain, a train of pre-compressed pulses with widths of a few pico-seconds arises out of the initial bichromatic deeply-modulated cosine-wave. These pulses undergo strong compression in the subsequent amplifying Erbium-doped fibre: sub-100 fs pulses with broad OFC spectra are formed. In the following low-dispersion highly nonlinear fibre, the OFC experience a further broadening and the intensity of the comb lines are fairly equalised. This approach was mathematically modelled by means of a Generalised Nonlinear Schrödinger Equation (GNLS) that contains terms describing the nonlinear optical Kerr effect, the delayed Raman response, the pulse self-steepening, and the linear optical losses as well as the wavelength-dependent Erbium gain profile for the second fibre. The initial condition equation being a deeply-modulated cosine-wave mimics the radiation of the two initial CW lasers. The numerical studies are performed with the help of Matlab scripts that were specifically developed for the integration of the GNLS and the initial condition according to the proposed approach for the OFC generation. The scripts are based on the Fourth-Order Runge-Kutta in the Interaction Picture Method (RK4IP) in combination with the local error method. This work includes the studies and results on the length optimisation of the first and the second fibre depending on different values of the group-velocity dispersion of the first fibre. Such length optimisation studies are necessary because the OFC have the biggest possible broadband and exhibit a low level of noise exactly at the optimum lengths. Further, the optical pulse build-up in the first and the second fibre was studied by means of the numerical technique called Soliton Radiation Beat Analysis (SRBA). It was shown that a common soliton crystal state is formed in the first fibre for low laser input powers. The soliton crystal continuously dissolves into separated optical solitons as the input power increases. The pulse formation in the second fibre is critically dependent on the features of the pulses formed in the first fibre. I showed that, for low input powers, an adiabatic soliton compression delivering low-noise OFC occurs in the second fibre. At high input powers, the pulses in the first fibre have more complicated structures which leads to the pulse break-up in the second fibre with a subsequent degradation of the OFC noise performance. The pulse intensity noise studies that were performed within the framework of this thesis allow making statements about the noise performance of an OFC. They showed that the intensity noise of the whole system decreases with the increasing value of LFS.
Frequency Measurement And Control
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Author : Andre N. Luiten
language : en
Publisher: Springer Science & Business Media
Release Date : 2003-07-01
Frequency Measurement And Control written by Andre N. Luiten 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.
This text on precision frequency measurement and its key enabling techniques includes reviews written by some of the most experienced researchers in their respective fields. This text should prove useful to researchers just entering the field of frequency metrology and standards, or equally well to the experienced practitioner.
Practical Applications Of Microresonators In Optics And Photonics
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Author : Andrey B. Matsko
language : en
Publisher: CRC Press
Release Date : 2018-09-03
Practical Applications Of Microresonators In Optics And Photonics written by Andrey B. Matsko and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-09-03 with Technology & Engineering categories.
Assembling an international team of experts, this book reports on the progress in the rapidly growing field of monolithic micro- and nanoresonators. The book opens with a chapter on photonic crystal-based resonators (nanocavities). It goes on to describe resonators in which the closed trajectories of light are supported by any variety of total internal reflection in curved and polygonal transparent dielectric structures. The book also covers distributed feedback microresonators for slow light, controllable dispersion, and enhanced nonlinearity. A portion of coverage is dedicated to the unique properties of resonators, which are extremely efficient tools when conducting multiple applications.
Springer Handbook Of Lasers And Optics
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Author : Frank Träger
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-05-05
Springer Handbook Of Lasers And Optics written by Frank Träger 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 2012-05-05 with Science categories.
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.