Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Hollow Core Optical Fibre Based Gas Discharge Laser Systems
Download Hollow Core Optical Fibre Based Gas Discharge Laser Systems full books in PDF, epub, and Kindle. Read online Hollow Core Optical Fibre Based Gas Discharge Laser Systems ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Hollow Core Optical Fibre Based Gas Discharge Laser Systems by : Adrian Love
Download or read book Hollow Core Optical Fibre Based Gas Discharge Laser Systems written by Adrian Love and published by Springer. This book was released on 2018-06-18 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research in this book represents the culmination of a drive to build the first discharge gas laser unencumbered by the effects of diffraction. This breakthrough has been achieved through careful implementation of a discharge within a hollow-core optical fibre, and by developing measurement and analysis techniques to demonstrate laser action in an experimental optical cavity. Gas lasers were amongst the earliest laser types to be demonstrated and commercialised, but it was recognised that noble gas lasers were limited by the minimum bore diameter of the laser tube, which is set by diffraction. The advent, in 2011, of hollow optical fibres with optical and physical properties suitable for gas discharge lasers opened up the opportunity to break this diffraction limit. Using a mixture of helium and xenon gas, lasing in the mid-infrared range was achieved using a 100μm core flexible hollow optical fibre which, at 1m long, is several hundred times the diffraction-limited Rayleigh length.
Book Synopsis Hollow Core Fibre-based Gas Discharge Laser Systems and Deuterium Loading of Photonic Crystal Fibres by : Samuel Bateman
Download or read book Hollow Core Fibre-based Gas Discharge Laser Systems and Deuterium Loading of Photonic Crystal Fibres written by Samuel Bateman and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hollow Core Fibre-based Gas Discharge Laser Systems and Deuterium Loading of Photonic Crystal Fibres by : Samuel Alec Bateman
Download or read book Hollow Core Fibre-based Gas Discharge Laser Systems and Deuterium Loading of Photonic Crystal Fibres written by Samuel Alec Bateman and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Realizing a Mid-infrared Optically Pumped Molecular Gas Laser Inside Hollow-core Photonic Crystal Fiber by : Andrew Michael Jones
Download or read book Realizing a Mid-infrared Optically Pumped Molecular Gas Laser Inside Hollow-core Photonic Crystal Fiber written by Andrew Michael Jones and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research has focused on the development, demonstration, and characterization of a new type of laser based on optically-pumped gases contained within hollow optical fibers. These novel lasers are appealing for a variety of applications including frequency metrology in the mid-infrared, free-space communications and imaging, and defense applications. Furthermore, because of the hollow core fibers used, this technology may provide the means to surpass the theoretical limits of output power available from high power solid-core fiber laser systems. Gas-filled hollow-core fiber lasers based on population inversion from acetylene (12C2H2) and hydrogen cyanide (HCN) gas contained within the core of a kagome-structured hollow-core photonic crystal fiber have now been demonstrated. The gases are optically pumped via first order rotational-vibrational overtones near 1.5 [mu]m using 1-ns duration pulses from a home-built optical parametric amplifier. Narrow-band laser emission peaks in the 3-[mu]m region corresponding to the [Delta][joule] = ±1 dipole allowed rotational transitions between the pumped vibrational overtone modes and the fundamental C-H stretching modes have been observed in both molecules. High gain resulting from tight confinement of the pump and laser light together with the active gas permits these lasers to operate in a single pass configuration, without the use of any external resonator structure. Studies of the generated mid-infrared pulse energy, threshold energy, and slope efficiency as functions of the launched pump pulse energy and gas pressure have been performed and show an optimum condition where the maximum laser pulse energy is achieved for a given fiber length. The laser pulse shape and the laser-to-pump pulse delay have been observed to change with varying pump pulse energy and gas pressure, resulting from the necessary population inversion being created in the gases at a specific fiber length dependent on the launched pulse energy. Work is on going to demonstrate the first continuous wave version of the laser which may be used to produce a single coherent output from many mutually incoherent pump sources.
Book Synopsis Improved Performance of an Optically Pumped Mid-infrared Acetylene-filled Hollow-core Fiber Laser by : Neda Dadashzadeh
Download or read book Improved Performance of an Optically Pumped Mid-infrared Acetylene-filled Hollow-core Fiber Laser written by Neda Dadashzadeh and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this research is improving the pulse output energy of a mid-IR pulsed acetylene-filled Hollow-core Optical Fiber Gas LASer (HOFGLAS) system. Pump pulses and acetylene molecules interact with each other inside hollow-core photonic crystal fiber that effectively confines light and allows for strong gain. This results in lasing at 3.11 [mu]m and 3.17 [mu]m lines based on population inversion of acetylene molecules, which are optically pumped at rotational-vibrational overtones near 1.5 [mu]m using 1 ns pulse duration from an optical parametric amplifier (OPA). This acetylene laser operates with no cavity mirrors because of a high gain in a single pass configuration. There are few laser sources in the mid-IR region while there are many applications for having a laser source in this range such as remote sensing, hazardous chemical detection, and breath analysis. This adds to the importance of the acetylene-filled HOFGLAS system. Some of the applications like remote sensing require high power. So, we moved toward power scaling this laser system by optimizing the laser operation through maximizing the OPA alignment to improve its modal content using longer length of fiber to increase the interaction length and improving the beam quality of the mid-IR emissions. The highest pulse energy ever obtained in the 3 [mu]m mid-IR region from the acetylene-filled HOFGLAS after applying the improvements is reported here (1.4 [mu]J). Higher mid-IR pulse energies can be achieved by improving the pulse energy achievable from the OPA pump source and working with longer pulse duration to decrease the bandwidth of the OPA. This operation demonstrates many novel properties of acetylene-filled pulsed mid-IR hollow-core fiber lasers. The excellent spatial beam quality at highest power and phenomenological scaling of saturation power and efficiency with pressure that we observe point to the promise of power scaling and motivate further development of numerical models of the laser for deeper insight into these effects. M2 measurement method was used to examine spatial beam quality and it was found to be fiber-dependent. For the improved setup, M2 was investigated at several input pump powers in addition to the reproducibility checks. M2 of 1.14 at the maximum output power motivates for beam combining to scale to higher power. The independence of efficiency on pressure is an evidence for reaching higher mid-IR power at a pressure where saturation behavior does not exist. achieving the highest mid-IR power to date, 1.4 [mu]J, encourages for building higher power OPA to produce high power mid-IR emissions. Taken as a whole, this laser exhibits novel behavior that motivates both numerical/theoretical investigation and further efforts to scale to higher powers.
Book Synopsis Gas Discharge in Hollow-core Fibers and Its Application in Waveguide Gas Lasers by : Xin Shi
Download or read book Gas Discharge in Hollow-core Fibers and Its Application in Waveguide Gas Lasers written by Xin Shi and published by . This book was released on 2009 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Laser Technology and Applications by : Chunlei Guo
Download or read book Handbook of Laser Technology and Applications written by Chunlei Guo and published by CRC Press. This book was released on 2021-06-23 with total page 711 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive handbook gives a fully updated guide to lasers and laser systems, including the complete range of their technical applications. The first volume outlines the fundamental components of lasers, their properties and working principles. The second volume gives exhaustive coverage of all major categories of lasers, from solid-state and semiconductor diode to fiber, waveguide, gas, chemical, and dye lasers. The third volume covers modern applications in engineering and technology, including all new and updated case studies spanning telecommunications and data storage to medicine, optical measurement, defense and security, nanomaterials processing and characterization.
Book Synopsis Synchronously Pumped and Continuous Wave Mid-IR Hollow Core Fibre Gas Lasers by : Muhammad Rosdi Abu Hassan
Download or read book Synchronously Pumped and Continuous Wave Mid-IR Hollow Core Fibre Gas Lasers written by Muhammad Rosdi Abu Hassan and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Physics and Technology by : Pradeep Kumar Gupta
Download or read book Laser Physics and Technology written by Pradeep Kumar Gupta and published by Springer. This book was released on 2014-11-06 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book, ‘Laser Physics and Technology’, addresses fundamentals of laser physics, representative laser systems and techniques, and some important applications of lasers. The present volume is a collection of articles based on some of the lectures delivered at the School on ‘Laser Physics and Technology’ organized at Raja Ramanna Centre for Advanced Technology during March, 12-30, 2012. The objective of the School was to provide an in-depth knowledge of the important aspects of laser physics and technology to doctoral students and young researchers and motivate them for further work in this area. In keeping with this objective, the fourteen chapters, written by leading Indian experts, based on the lectures delivered by them at the School, provide along with class room type coverage of the fundamentals of the field, a brief review of the current status of the field. The book will be useful for doctoral students and young scientists who are embarking on a research in this area as well as to professionals who would be interested in knowing the current state of the field particularly in Indian context.
Book Synopsis Intense Laser-gas Interactions in Hollow-core Photonic Band-gap Fibers by : Christopher James Hensley
Download or read book Intense Laser-gas Interactions in Hollow-core Photonic Band-gap Fibers written by Christopher James Hensley and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents an experimental investigation of intense laser field propagation in hollow-core photonic band-gap fibers (HC-PBGF). The primary aim of this work has been the production of coherent extreme ultraviolet radiation by high-harmonic generation in a gas-filled fiber. The geometric properties of HC-PBGFs have the potential for a dramatic reduction of the pulse energy previously required while the guiding principles should permit enhanced conversion by phase-matching the fundamental and harmonic waves. In this effort we also studied the glass contribution to the nonlinearity of these unique fibers showing the significant change that can occur by nanometer scale deviations in the core structure. We also, by careful mode matching to the fundamental fiber mode, demonstrated record-low coupling losses which allowed peak intensity transmission nearly an order of magnitude larger than previously observed. To avoid nonlinear effects while coupling into the high-harmonic generating fiber and absorption effects when coupling out xenon was introduced by a microchannel drilled through the side of the fiber with ultrafast-laser pulses. Though we were unable to observe high harmonic generation significant progress was made toward this goal including assembly and optimization of the vacuum chamber, construction of a gas-to-fiber delivery system and characterization of our detector by generating third harmonic in a continuous jet of xenon.
Book Synopsis Fiber Optic Sensors by : Ignacio R. Matias
Download or read book Fiber Optic Sensors written by Ignacio R. Matias and published by Springer. This book was released on 2016-11-01 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes important recent developments in fiber optic sensor technology and examines established and emerging applications in a broad range of fields and markets, including power engineering, chemical engineering, bioengineering, biomedical engineering, and environmental monitoring. Particular attention is devoted to niche applications where fiber optic sensors are or soon will be able to compete with conventional approaches. Beyond novel methods for the sensing of traditional parameters such as strain, temperature, and pressure, a variety of new ideas and concepts are proposed and explored. The significance of the advent of extended infrared sensors is discussed, and individual chapters focus on sensing at THz frequencies and optical sensing based on photonic crystal structures. Another important topic is the resonances generated when using thin films in conjunction with optical fibers, and the enormous potential of sensors based on lossy mode resonances, surface plasmon resonances, and long-range surface exciton polaritons. Detailed attention is also paid to fiber Bragg grating sensors and multimode interference sensors. Each chapter is written by an acknowledged expert in the subject under discussion.
Book Synopsis Advances in Hollow Core Fibres and Application to Mid-infrared Fibre Gas Lasers by : Mengrong Xu
Download or read book Advances in Hollow Core Fibres and Application to Mid-infrared Fibre Gas Lasers written by Mengrong Xu and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis State-of-the-Art Laser Spectroscopy and its Applications : Volume II by : Yufei Ma
Download or read book State-of-the-Art Laser Spectroscopy and its Applications : Volume II written by Yufei Ma and published by Frontiers Media SA. This book was released on 2023-02-09 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Official Gazette of the United States Patent and Trademark Office by :
Download or read book Official Gazette of the United States Patent and Trademark Office written by and published by . This book was released on 1988 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Encyclopedia of Modern Optics by : Bob D. Guenther
Download or read book Encyclopedia of Modern Optics written by Bob D. Guenther and published by Academic Press. This book was released on 2018-02-14 with total page 2253 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Encyclopedia of Modern Optics, Second Edition, Five Volume Set provides a wide-ranging overview of the field, comprising authoritative reference articles for undergraduate and postgraduate students and those researching outside their area of expertise. Topics covered include classical and quantum optics, lasers, optical fibers and optical fiber systems, optical materials and light-emitting diodes (LEDs). Articles cover all subfields of optical physics and engineering, such as electro-optical design of modulators and detectors. This update contains contributions from international experts who discuss topics such as nano-photonics and plasmonics, optical interconnects, photonic crystals and 2D materials, such as graphene or holy fibers. Other topics of note include solar energy, high efficiency LED’s and their use in illumination, orbital angular momentum, quantum optics and information, metamaterials and transformation optics, high power fiber and UV fiber lasers, random lasers and bio-imaging. Addresses recent developments in the field and integrates concepts from fundamental physics with applications for manufacturing and engineering/design Provides a broad and interdisciplinary coverage of specialist areas Ensures that the material is appropriate for new researchers and those working in a new sub-field, as well as those in industry Thematically arranged and alphabetically indexed, with cross-references added to facilitate ease-of-use
Book Synopsis Fiber Laser System for the Detection of Trace Gas by : Jonas Kestutis Valiunas
Download or read book Fiber Laser System for the Detection of Trace Gas written by Jonas Kestutis Valiunas and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The research presented in this thesis is on the development of a trace gas detection system based on intracavity absorption spectroscopy (ICAS). The developed system was capable of detecting nitrous oxide (N2O) and acetylene (C2H2) gas at sub-ppmv levels. The P (12) rotational line of N2O at ~1522.20 nm, and the R (5) and R (4) rotational lines of C2H2 at ~1522.22 nm were used for detection. A fiber Bragg grating was incorporated into the ICAS cavity to enhance the system sensitivity by allowing the selection of strong absorption lines for detection. By operating the fiber laser based ICAS system at threshold, multiple circulations of the amplified spontaneous emission inside the cavity enhanced the system detection sensitivity. Further, the laser wavelength contained multi-longitudinal modes, which improved the system sensitivity. The system sensitivity was explored for two intra-cavity gas cells: a multi-pass Herriott cell and a gas cell based on a hollow-core photonic crystal fiber (HC-PCF). The system operated at room temperature and a polarization-maintaining erbium-doped fiber was used as a saturable absorber to help eliminate mode hopping in the laser cavity.
Download or read book The Engineering Index Annual written by and published by . This book was released on 1992 with total page 2264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its creation in 1884, Engineering Index has covered virtually every major engineering innovation from around the world. It serves as the historical record of virtually every major engineering innovation of the 20th century. Recent content is a vital resource for current awareness, new production information, technological forecasting and competitive intelligence. The world?s most comprehensive interdisciplinary engineering database, Engineering Index contains over 10.7 million records. Each year, over 500,000 new abstracts are added from over 5,000 scholarly journals, trade magazines, and conference proceedings. Coverage spans over 175 engineering disciplines from over 80 countries. Updated weekly.
