The Study of Plasma Formed by Ultrashort Laser Pulses

The Study of Plasma Formed by Ultrashort Laser Pulses PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 49

Get Book Here

Book Description
Processes occurring during high-temperature heating of plasmas have been studied experimentally by focusing laser emission of ultrashort duration on the surface of lithium deuteride. Experiments included the shadow photography of plasma with illumination by ultrashort pulses and the photo-registration of the dispersion of plasma with the aid of an image inverter, as well as the time dependence of laser pulse reflection and the measurement of the electron temperature of plasma with respect to its X-ray radiation. The basic processes which accompany the heating of plasma by ultrashort pulses are examined theoretically within the framework of approximations based upon the results of experiments.

The Study of Plasma Formed by Ultrashort Laser Pulses

The Study of Plasma Formed by Ultrashort Laser Pulses PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 49

Get Book Here

Book Description
Processes occurring during high-temperature heating of plasmas have been studied experimentally by focusing laser emission of ultrashort duration on the surface of lithium deuteride. Experiments included the shadow photography of plasma with illumination by ultrashort pulses and the photo-registration of the dispersion of plasma with the aid of an image inverter, as well as the time dependence of laser pulse reflection and the measurement of the electron temperature of plasma with respect to its X-ray radiation. The basic processes which accompany the heating of plasma by ultrashort pulses are examined theoretically within the framework of approximations based upon the results of experiments.

Frontiers in High Energy Density Physics

Frontiers in High Energy Density Physics PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 030908637X
Category : Science
Languages : en
Pages : 177

Get Book Here

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.

Frequency Conversion of Ultrashort Pulses in Extended Laser-Produced Plasmas

Frequency Conversion of Ultrashort Pulses in Extended Laser-Produced Plasmas PDF Author: Rashid A Ganeev
Publisher: Springer
ISBN: 9811001944
Category : Science
Languages : en
Pages : 230

Get Book Here

Book Description
This book offers a review of the use of extended ablation plasmas as nonlinear media for HHG of high-order harmonic generation (HHG). The book describes the different experimental approaches, shows the advantages and limitations regarding HHG efficiency and discusses the particular processes that take place at longer interaction lengths, including propagation and quasi-phase matching effects. It describes the most recent approaches to harmonic generation in the extreme ultraviolet (XUV) range with the use of extended plasma plumes, and how these differ from more commonly-used gas-jet sources. The main focus is on studies using extended plasmas, but some new findings from HHG experiments in narrow plasma plumes are also discussed. It also describes how quasi-phase-matching in modulated plasmas, as demonstrated in recent studies, has revealed different means of tuning enhanced harmonic groups in the XUV region. After an introduction to the fundamental theoretical and experimental aspects of HHG, a review of the most important results of HHG in narrow plasmas is presented, including recent studies of small-sized plasma plumes as emitters of high-order harmonics. In Chapter 2, various findings in the application of extended plasmas for harmonic generation are analyzed. One of the most important applications of extended plasmas, the quasi-phase-matching of generated harmonics, is demonstrated in Chapter 3, including various approaches to the modification of perforated plasma plumes. Chapter 4 depicts the nonlinear optical features of extended plasmas produced on the surfaces of different non-metal materials. Chapter 5 is dedicated to the analysis of new opportunities for extended plasma induced HHG. The advantages of the application of long plasma plumes for HHG, such as resonance enhancement and double-pulse method, are discussed in Chapter 6. Finally, a summary section brings together all of these findings and discuss the perspectives of extended plasma formations for efficient HHG and nonlinear optical plasma spectroscopy. The book will be useful for students and scholars working in this highly multidisciplinary domain involving material science, nonlinear optics and laser spectroscopy. It brings the new researcher to the very frontier of the physics of the interaction between laser and extended plasma; for the expert it will serve as an essential guide and indicate directions for future research.

פרוש המשנה

פרוש המשנה PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

Get Book Here

Book Description


Resonance Enhancement in Laser-Produced Plasmas

Resonance Enhancement in Laser-Produced Plasmas PDF Author: Rashid A. Ganeev
Publisher: John Wiley & Sons
ISBN: 1119472350
Category : Science
Languages : en
Pages : 371

Get Book Here

Book Description
A comprehensive guide to a new technology for enabling high-performance spectroscopy and laser sources Resonance Enhancement in Laser-Produced Plasmas offers a guide to the most recent findings in the newly emerged field of resonance-enhanced high-order harmonic generation using the laser pulses propagating through the narrow and extended laser-produced plasma plumes. The author—a noted expert in the field—presents an introduction and the theory that underpin the roles of resonances in harmonic generation. The book also contains a review of the most advanced methods of plasma harmonics generation at the conditions of coincidence of some harmonics, autoionizing states, and some ionic transitions possessing strong oscillator strengths. Comprehensive in scope, this text clearly demonstrates the importance of resonance-enhanced nonlinear optical effects leading to formation of efficient sources of coherent extreme ultraviolet radiation that can be practically applied. This important resource: Puts the focuses on novel applications of laser-plasma physics, such as the development of ultrashort-wavelength coherent light sources Details both the theoretical and experimental aspects of higher-order harmonic generation in laser-produced plasmas Contains information on early studies of resonance enhancement of harmonics in metal-ablated plasmas Analyzes the drawbacks of different theories of resonant high order harmonic generation Includes a discussion of the quasi-phase-matching and properties of semiconductor plasmas Written for researchers and students in the fields of physics, materials science, and electrical engineering who are interested in laser physics and optics, Resonance Enhancement in Laser-Produced Plasmas offers an introduction to the topic and covers recent experimental studies of various resonance processes in plasmas leading to enhancement of single harmonic.

Formation of Plasma Channels in Air Under Filamentation of Focused Ultrashort Laser Pulses

Formation of Plasma Channels in Air Under Filamentation of Focused Ultrashort Laser Pulses PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

Get Book Here

Book Description


Selected Papers on Ultrashort Laser Pulse Bioeffects

Selected Papers on Ultrashort Laser Pulse Bioeffects PDF Author: William P. Roach
Publisher: SPIE-International Society for Optical Engineering
ISBN:
Category : Eye
Languages : en
Pages : 694

Get Book Here

Book Description
This volume contains key papers that document the initial probing of the limits of subnanosecond pulses and the resulting discoveries of nonlinear effects. The papers tell the story of effects previously thought to be impossible to produce in tissue. If you read all the references carefully, you will see the studies evolve from speculation to experimentation to theory, and culminate in policy recommendations.

Laser-Plasma Interaction with Ultra-Short Laser Pulses

Laser-Plasma Interaction with Ultra-Short Laser Pulses PDF Author: Ralph Jung
Publisher: VDM Publishing
ISBN: 9783836496636
Category : Science
Languages : en
Pages : 196

Get Book Here

Book Description
In 1985, the invention of the Chirped Pulse Amplification (CPA) technique made it possible to amplify ultra-short laser pulses to high intensities. Nowadays, laser pulses containing only few optical cycles can be amplified to several tens of gigawatt on a daily basis, using compact table top systems, and lasers that even produce pulses of petawatt power are available at international laboratories. This book comprises the specification and description of two experiments which were carried out to research the interaction of high intensity, ultra-short laser pulses with matter. In the first experiment, the ionization front and the plasma channel generated by laser pulses of sub-10-fs duration and gigawatt power were studied using optical shadowgraphy and interferometry. During this experiment the propagation of the front and the evolution of the channel were resolved optically with sub-10-fs time resolution for the first time. The second experiment, which was carried out at the VULCAN Petawatt laser at the Rutherford Appleton Laboratory (UK), included the research of the propagation and filamentation of a laser-produced electron beam through an over-dense plasma. The structure of the beam was observed by imaging the optical transition radiation produced by the MeV electrons.

Laser-Plasma Interactions

Laser-Plasma Interactions PDF Author: Dino A. Jaroszynski
Publisher: CRC Press
ISBN: 1584887796
Category : Science
Languages : en
Pages : 454

Get Book Here

Book Description
A Solid Compendium of Advanced Diagnostic and Simulation ToolsExploring the most exciting and topical areas in this field, Laser-Plasma Interactions focuses on the interaction of intense laser radiation with plasma. After discussing the basic theory of the interaction of intense electromagnetic radiation fields with matter, the book covers three ap

Progress in Ultrafast Intense Laser Science VIII

Progress in Ultrafast Intense Laser Science VIII PDF Author: Kaoru Yamanouchi
Publisher: Springer
ISBN: 9783642287275
Category : Technology & Engineering
Languages : en
Pages : 204

Get Book Here

Book Description
The PUILS series delivers up-to-date reviews of progress in Ultrafast Intense Laser Science, a newly emerging interdisciplinary research field spanning atomic and molecular physics, molecular science and optical science which has been stimulated by the recent developments in ultrafast laser technologies. Each volume compiles peer-reviewed articles authored by researchers at the forefront of each their own subfields of UILS. Every chapter opens with an overview of the topics to be discussed, so that researchers unfamiliar to the subfield as well as graduate students can grasp the importance and attractions of the research topic at hand. These are followed by reports of cutting-edge discoveries. This eighth volume covers a broad range of topics from this interdisciplinary research field, focusing on molecules interacting with ultrashort and intense laser fields, advanced technologies for the characterization of ultrashort laser pulses and their applications, laser plasma formation and laser acceleration.