Optimization Of High Order Harmonic Generation Using An Ultrashort Pulse High Intensity Laser
DOWNLOAD
Download Optimization Of High Order Harmonic Generation Using An Ultrashort Pulse High Intensity Laser PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Optimization Of High Order Harmonic Generation Using An Ultrashort Pulse High Intensity Laser book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Optimization Of High Order Harmonic Generation Using An Ultrashort Pulse High Intensity Laser
DOWNLOAD
Author : Bernd Schütte
language : en
Publisher:
Release Date : 2006
Optimization Of High Order Harmonic Generation Using An Ultrashort Pulse High Intensity Laser written by Bernd Schütte and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
Improvements For Generating High Order Harmonics And Attosecond Pulses With Ultrashort Laser Fields
DOWNLOAD
Author : Dian Peng
language : en
Publisher:
Release Date : 2019
Improvements For Generating High Order Harmonics And Attosecond Pulses With Ultrashort Laser Fields written by Dian Peng and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Laser pulses, Ultrashort categories.
Nonlinear processes of high-order harmonic generation (HHG) produced by ultrashort few-cycle laser pulses possess interesting features which HHG produced by long pulses of many cycles may not have. First, HHG spectra produced by ultrashort pulses are extremely sensitive to the driving pulse waveform, which can be controlled by laser parameters such as carrier-envelope phases (CEPs), time delays or frequency chirps. Second, HHG spectra produced by ultrashort pulses can exhibit broad uneven peaks which are different from usual odd-ordered harmonic peaks that long pulses produce. Based on the high sensitivity on pulse waveform of HHG spectra produced by ultrashort pulses, we investigate for a two-color few-cycle pulse how HHG can be enhanced by the use of time delays or frequency chirps. Both a numerical and an analytic method are employed to calculate HHG spectra from a single H atom. For the time delay case, our results show that a time delay between the two-color, few-cycle pulses can increase the intensity of an HHG spectrum by an order of magnitude (or more) compared to the no-time-delay case at the cost of a reduction in the HHG plateau cutoff energy. For the frequency chirp case, we show how changing signs of chirps in each of the two component few-cycle pulses leads to drastic changes in the HHG spectra. Both time-frequency analyses from the numerical method and a semiclassical interpretation from the analytic method provide clear physical explanations of how HHG spectra are changed by those time delays and chirp signs.Based on the broad uneven peaks in HHG spectra produced by ultrashort pulses, we investigate how the duration of an isolated attosecond pulse can be minimized by carefully selecting frequencies in an HHG spectrum and provide a solution for the attochirp problem in generating attosecond pulses. Specifically, three frequency-selection categories are studied: a single spectral range between cutoffs, a single spectral range across cutoff and a striped-frequency range. Our results show that among all three categories the striped-frequency range produces the shortest and strongest attosecond pulses for a broad HHG spectrum with transform-limited duration.
High Order Harmonic Generation In Laser Plasma Plumes
DOWNLOAD
Author : Rashid A. Ganeev
language : en
Publisher: World Scientific
Release Date : 2013
High Order Harmonic Generation In Laser Plasma Plumes written by Rashid A. Ganeev and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Science categories.
This book represents the first comprehensive treatment of high-order harmonic generation in laser-produced plumes, covering the principles, past and present experimental status and important applications. It shows how this method of frequency conversion of laser radiation towards the extreme ultraviolet range matured over the course of multiple studies and demonstrated new approaches in the generation of strong coherent short-wavelength radiation for various applications. Significant discoveries and pioneering contributions of researchers in this field carried out in various laser scientific centers worldwide are included in this first attempt to describe the important findings in this area of nonlinear spectroscopy.High-Order Harmonic Generation in Laser Plasma Plumes is a self-contained and unified review of the most recent achievements in the field, such as the application of clusters (fullerenes, nanoparticles, nanotubes) for efficient harmonic generation of ultrashort laser pulses in cluster-containing plumes and resonance-induced enhancement of harmonic yield. It can be used as an advanced monograph for researchers and graduate students working in the field of nonlinear spectroscopy. It is also suitable for researchers in laser physics and nonlinear optics who wish to have an overview of the advanced achievements in laser ablation-induced high-order harmonic generation spectroscopy. The carefully presented details of this book will be of value to research devoted to the understanding and control frequency conversion of laser pulses in plasma plumes.The studies described in this book pave the way for the development of a new method of materials studies using the laser ablation-induced high-order harmonic generation spectroscopy, which can exploit the spectral and structural properties of various solid-state materials through their ablation and further propagation of short laser pulse through laser-produced plasma and generation of high-order harmonics.
Opportunities In Intense Ultrafast Lasers
DOWNLOAD
Author : National Academies of Sciences, Engineering, and Medicine
language : en
Publisher: National Academies Press
Release Date : 2018-01-31
Opportunities In Intense Ultrafast Lasers written by National Academies of Sciences, Engineering, and Medicine and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-31 with Science categories.
The laser has revolutionized many areas of science and society, providing bright and versatile light sources that transform the ways we investigate science and enables trillions of dollars of commerce. Now a second laser revolution is underway with pulsed petawatt-class lasers (1 petawatt: 1 million billion watts) that deliver nearly 100 times the total world's power concentrated into a pulse that lasts less than one-trillionth of a second. Such light sources create unique, extreme laboratory conditions that can accelerate and collide intense beams of elementary particles, drive nuclear reactions, heat matter to conditions found in stars, or even create matter out of the empty vacuum. These powerful lasers came largely from U.S. engineering, and the science and technology opportunities they enable were discussed in several previous National Academies' reports. Based on these advances, the principal research funding agencies in Europe and Asia began in the last decade to invest heavily in new facilities that will employ these high-intensity lasers for fundamental and applied science. No similar programs exist in the United States. Opportunities in Intense Ultrafast Lasers assesses the opportunities and recommends a path forward for possible U.S. investments in this area of science.
High Order Harmonic Generation In Laser Plasma Plumes
DOWNLOAD
Author : Rashid A. Ganeev
language : en
Publisher: World Scientific
Release Date : 2013
High Order Harmonic Generation In Laser Plasma Plumes written by Rashid A. Ganeev and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Science categories.
This book represents the first comprehensive treatment of high-order harmonic generation in laser-produced plumes, covering the principles, past and present experimental status and important applications. It shows how this method of frequency conversion of laser radiation towards the extreme ultraviolet range matured over the course of multiple studies and demonstrated new approaches in the generation of strong coherent short-wavelength radiation for various applications. Significant discoveries and pioneering contributions of researchers in this field carried out in various laser scientific centers worldwide are included in this first attempt to describe the important findings in this area of nonlinear spectroscopy. High-Order Harmonic Generation in Laser Plasma Plumes is a self-contained and unified review of the most recent achievements in the field, such as the application of clusters (fullerenes, nanoparticles, nanotubes) for efficient harmonic generation of ultrashort laser pulses in cluster-containing plumes and resonance-induced enhancement of harmonic yield. It can be used as an advanced monograph for researchers and graduate students working in the field of nonlinear spectroscopy. It is also suitable for researchers in laser physics and nonlinear optics who wish to have an overview of the advanced achievements in laser ablation-induced high-order harmonic generation spectroscopy. The carefully presented details of this book will be of value to research devoted to the understanding and control frequency conversion of laser pulses in plasma plumes. The studies described in this book pave the way for the development of a new method of materials studies using the laser ablation-induced high-order harmonic generation spectroscopy, which can exploit the spectral and structural properties of various solid-state materials through their ablation and further propagation of short laser pulse through laser-produced plasma and generation of high-order harmonics.
Phase Matching Optimization Of Laser High Order Harmonics Generated In A Gas Cell
DOWNLOAD
Author : Julia Robin Miller Sutherland
language : en
Publisher:
Release Date : 2005
Phase Matching Optimization Of Laser High Order Harmonics Generated In A Gas Cell written by Julia Robin Miller Sutherland and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Electronic dissertations categories.
Ten-millijoule, thirty-five femtosecond, 800 nm (4̃0 nm bandwidth) laser pulses are used to study high-order harmonic generation in helium- and neon-filled gas cells of various lengths. Harmonic orders in the range of 50 to 100 are investigated. A semi-infinite cell geometry produces brighter harmonics than cells of sub-centimeter length. In the semi-infinite geometry, the gas occupies the region from the focusing lens to a thin exit foil near the laser focus. Counter-propagating light is used to directly probe where the high harmonics are generated within the laser focus and to investigate phase matching. The phase matching under optimized harmonic generation conditions was found to be unexpectedly good with phase zones many millimeters long.
Frequency Conversion Of Ultrashort Pulses In Extended Laser Produced Plasmas
DOWNLOAD
Author : Rashid A Ganeev
language : en
Publisher: Springer
Release Date : 2016-02-13
Frequency Conversion Of Ultrashort Pulses In Extended Laser Produced Plasmas written by Rashid A Ganeev and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-02-13 with Science categories.
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.
Optimization Of High Order Harmonic Generation In Laser Driven Atomic And Molecular Systems
DOWNLOAD
Author : Robert Fischer
language : en
Publisher:
Release Date : 2007
Optimization Of High Order Harmonic Generation In Laser Driven Atomic And Molecular Systems written by Robert Fischer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
High Order Harmonic Generation With Short Pulse Lasers
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1992
High Order Harmonic Generation With Short Pulse Lasers written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.
Recent progress in the understanding of high-order harmonic conversion from atoms and ions exposed to high-intensity, short-pulse optical lasers is reviewed. We find that ions can produce harmonics comparable in strength to those obtained from neutral atoms, and that the emission extends to much higher order. Simple scaling laws for the strength of the harmonic emission and the maximium observable harmonic are suggested. These results imply that the photoemission observed in recent experiments in helium and neon contains contributions from ions as well as neutrals.
Progress In Ultrafast Intense Laser Science Ii
DOWNLOAD
Author : See Leang Chin
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-06-10
Progress In Ultrafast Intense Laser Science Ii written by See Leang Chin 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 2007-06-10 with Science categories.
This book series addresses a newly emerging interdisciplinary research field, Ultrafast Intense Laser Science, spanning atomic and molecular physics, molecular science, and optical science. Highlights of this second volume include Coulomb explosion and fragmentation of molecules, control of chemical dynamics, high-order harmonic generation, propagation and filamentation, and laser-plasma interaction. All chapters are authored by foremost experts in their fields.