Studies of Low Density Plasmas with Gas Lasers PDF Download
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Author: Joseph Thomas Verdeyen
Publisher:
ISBN:
Category : Gas lasers
Languages : en
Pages : 100
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Book Description
Author: Joseph Thomas Verdeyen
Publisher:
ISBN:
Category : Gas lasers
Languages : en
Pages : 100
Get Book Here
Book Description
Author: Joseph Thomas Verdeyen
Publisher:
ISBN:
Category : Gas lasers
Languages : en
Pages : 24
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Book Description
Author: J. T. Verdeyen
Publisher:
ISBN:
Category :
Languages : en
Pages : 95
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Book Description
The report describes many of the uses of the gas laser to study the refractive index of a plasma. It is shown that the sensitivity of the laser interferometer can be greatly enhanced by utilizing the transverse modes of an external spherical cavity. The parameters that determine the sensitivity of a spherical laser interferometer are discussed, and detailed theory of such is given. The plasma to be studied can be located in the external cavity or inside the laser cavity. The latter geometry preserves the excellent spatial resolution of the laser and also the high sensitivity of the spherical geometry. In order to achieve even higher sensitivity to very small changes in plasma refractivity, the laser heterodyne system was evolved. This was applied at the three common He:Ne laser wavelengths of 0.6328 microns, 1.15 microns, and 3.39 microns. The latter transition is especially attractive because of its high gain and inherent sensitivity to the presence of the free electrons in a plasma. However, mode pulling effects at 3.39 microns are quite serious and a technique has been developed to evaluate it. (Author).
Author: National Research Council
Publisher: National Academies Press
ISBN: 030908637X
Category : Science
Languages : en
Pages : 177
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Book Description
Recent scientific and technical advances have made it possible to create matter in the laboratory under conditions relevant to astrophysical systems such as supernovae and black holes. These advances will also benefit inertial confinement fusion research and the nation's nuclear weapon's program. The report describes the major research facilities on which such high energy density conditions can be achieved and lists a number of key scientific questions about high energy density physics that can be addressed by this research. Several recommendations are presented that would facilitate the development of a comprehensive strategy for realizing these research opportunities.
Author: E. W. McDaniel
Publisher: Academic Press
ISBN: 1483218686
Category : Science
Languages : en
Pages : 486
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Book Description
Applied Atomic Collision Physics, Volume 3: Gas Lasers describes the applications of atomic collision physics in the development of many types of gas lasers. Topics covered range from negative ion formation in gas lasers to high-pressure ion kinetics and relaxation of molecules exchanging vibrational energy. Ion-ion recombination in high-pressure plasmas is also discussed, along with electron-ion recombination in gas lasers and collision processes in chemical lasers. Comprised of 14 chapters, this volume begins with a historical summary of gas laser developments and an overview of the basic operating principles of major gas laser types. The discussion then turns to the mechanism of formation of negative ions in gas lasers; ion-ion recombination in high-pressure plasmas; electron-ion recombination in gas lasers; and collision processes in chemical lasers. Subsequent chapters focus on high-energy carbon dioxide laser amplifiers; spectroscopy and excited state chemistry of excimer lasers; rare-gas halide lasers; transient optical absorption in the ultraviolet; and pre-ionized self-sustained laser discharges. The final chapter considers the stability of excimer laser discharges. This book will be of interest to physicists and chemists.
Author: N. G. Basov
Publisher: Springer Science & Business Media
ISBN: 1468416235
Category : Science
Languages : en
Pages : 122
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Book Description
This volume reports investigations which form part of a major series of theoretical and experimental studies being carried out in the Laboratory of Low-Temperature Plasma Optics at the Lebedev Physics Institute in Moscow. The papers give the results of systematic investigations of the chemical composition and of the electrical and optical properties of discharge plasmas, and also of populations of laser levels. Reliable and detailed information is given on the dissociation of carbon dioxide gas in discharges; the nature of the velocity distribution function, average energies, and densities of electrons; and populations and vibrational temperatures of molecules in cw CO and CO lasers. The material in this volume is intended for specialists in quantum electronics and low temperature plasma diagnostics.
Author: Masamori Endo
Publisher: CRC Press
ISBN: 1420018809
Category : Technology & Engineering
Languages : en
Pages : 576
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Book Description
Lasers with a gaseous active medium offer high flexibility, wide tunability, and advantages in cost, beam quality, and power scalability. Gas lasers have tended to become overshadowed by the recent popularity and proliferation of semiconductor lasers. As a result of this shift in focus, details on modern developments in gas lasers are difficult to find. In addition, different types of gas lasers have unique properties that are not well-described in other references. Collecting expert contributions from authorities dealing with specific types of lasers, Gas Lasers examines the fundamentals, current research, and applications of this important class of laser. It is important to understand all types of lasers, from solid-state to gaseous, before making a decision for any application. This book fills in the gaps by discussing the definition and properties of gaseous media along with its fluid dynamics, electric excitation circuits, and optical resonators. From this foundation, the discussion launches into the basic physics, characteristics, applications, and current research efforts for specific types of gas lasers: CO lasers, CO2 lasers, HF/DF lasers, excimer lasers, iodine lasers, and metal vapor lasers. The final chapter discusses miscellaneous lasers not covered in the previous chapters. Collecting hard-to-find material into a single, convenient source, Gas Lasers offers an encyclopedic survey that helps you approach new applications with a more complete inventory of laser options.
Author: Pierre Michel
Publisher: Springer Nature
ISBN: 3031234243
Category : Science
Languages : en
Pages : 423
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Book Description
This textbook provides a comprehensive introduction to the physics of laser-plasma interactions (LPI), based on a graduate course taught by the author. The emphasis is on high-energy-density physics (HEDP) and inertial confinement fusion (ICF), with a comprehensive description of the propagation, absorption, nonlinear effects and parametric instabilities of high energy lasers in plasmas. The recent demonstration of a burning plasma on the verge of nuclear fusion ignition at the National Ignition Facility in Livermore, California, has marked the beginning of a new era of ICF and fusion research. These new developments make LPI more relevant than ever, and the resulting influx of new scientists necessitates new pedagogical material on the subject. In contrast to the classical textbooks on LPI, this book provides a complete description of all wave-coupling instabilities in unmagnetized plasmas in the kinetic as well as fluid pictures, and includes a comprehensive description of the optical smoothing techniques used on high-power lasers and their impact on laser-plasma instabilities. It summarizes all the key developments from the 1970s to the present day in view of the current state of LPI and ICF research; it provides a derivation of the key LPI metrics and formulas from first principles, and connects the theory to experimental observables. With exercises and plenty of illustrations, this book is ideal as a textbook for a course on laser-plasma interactions or as a supplementary text for graduate introductory plasma physics course. Students and researchers will also find it to be an invaluable reference and self-study resource.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 9
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Book Description
An experiment has been proposed to investigate a photopumped x-ray laser approach using a novel, high-density, laser heated supersonic gas jet plasma to prepare the lasant plasma. The scheme uses the He- like sodium 1.10027 nm line to pump the He-like neon 1s-4p transition at 1.10003 nm with the lasing transitions between the n=4 to n=2,3 states and the n=3 to n=2 state at 5.8 nm, 23.0 nm, and 8.2 nm, respectively. The experiment had been proposed in 1990 and funding began Jan. 1991; however circumstances made it impossible to pursue the research over the past 5 years, and it was decided not to pursue the research any further.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
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Book Description
