Generation And Application Of Attosecond Pulses
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Generation And Application Of Attosecond Pulses
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Author : Zsolt Diveki
language : en
Publisher:
Release Date : 2011
Generation And Application Of Attosecond Pulses written by Zsolt Diveki and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
To capture electronic rearrangements inside a molecule or during chemical reactions, attosecond (as, 1 as =10-18 s) time resolution is needed. To create a light pulse with this duration, the central frequency has to be in the XUV range and cover several tens of eVs. Moreover, the frequency components have to be synchronized. The so called High Harmonic Generation (HHG) in gases well suits this task. During this process a high intensity laser pulse is focused in a gas jet, where its electric field bends the potential barrier of an atom allowing an electron wave packet (EWP) to tunnel ionize. Following the electric field of the laser the EWP gets accelerated, gaining a large kinetic energy that may be released as a high energy (XUV) photon in the event of a re-collision with the ionic core. These recolliding EWP probe the structure and dynamics of the core in a self-probing scheme: the EWP, that is emitted by the molecule at a certain time, probes itself later. More precisely, this ”self-probing” scheme gives access to the complex valued recombination dipole moment (RDM) of the molecule which is determined by both the nuclear and electronic structure. The recombination encodes these characteristics into the spectral amplitude, phase and polarization state of the harmonic radiation emitted by the dipole. Due to the coherent nature of HHG it is possible to measure all these three parameters. Moreover, it is in principle possible through a tomographic procedure to reconstruct the radiating orbital.The objective of my thesis was two-fold. By implementing advanced characterization techniques of the harmonic amplitude, phase and polarization we studied i) the electronic structure of N2 and laser induced multi-channel tunnel ionization. We presented the reconstruction of molecular orbitals and revealed the ionization channel dependent ultrafast nuclear vibration. We also studied ii) the reflectivity and dispersion of recently designed chirped XUV mirrors that can shape the temporal profile of attosecond pulses. With these mirrors we could control the spectral phase over 20 eV and compensate the GDD of the harmonics or introduce a TOD. We also proposed a novel attosecond pulse shaper.
Fundamentals Of Attosecond Optics
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Author : Zenghu Chang
language : en
Publisher: CRC Press
Release Date : 2016-04-19
Fundamentals Of Attosecond Optics written by Zenghu Chang and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-04-19 with Science categories.
Attosecond optical pulse generation, along with the related process of high-order harmonic generation, is redefining ultrafast physics and chemistry. A practical understanding of attosecond optics requires significant background information and foundational theory to make full use of these cutting-edge lasers and advance the technology toward the n
Generation And Application Of Ultrashort Laser Pulses In Attosecond Science
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Author : Felix Frank
language : en
Publisher:
Release Date : 2011
Generation And Application Of Ultrashort Laser Pulses In Attosecond Science written by Felix Frank and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Attosecond And Strong Field Physics
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Author : Chii-Dong Lin
language : en
Publisher: Cambridge University Press
Release Date : 2018-05-10
Attosecond And Strong Field Physics written by Chii-Dong Lin and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-10 with Science categories.
An introductory textbook on attosecond and strong field physics, covering fundamental theory and modeling techniques, as well as future opportunities and challenges.
Extremely Short Light Pulses
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Author : Vladislav S. Yakovlev
language : en
Publisher:
Release Date : 2003
Extremely Short Light Pulses written by Vladislav S. Yakovlev and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Generation And Metrology Of Ultrashort Pulses And Their Application In Attosecond Science
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Author : Lana Neoriĉiĉ Maclot
language : en
Publisher:
Release Date : 2022
Generation And Metrology Of Ultrashort Pulses And Their Application In Attosecond Science written by Lana Neoriĉiĉ Maclot and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
Attosecond Pulse Generation And Characterization
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Author : Razvan Cristian Chirla
language : en
Publisher:
Release Date : 2011
Attosecond Pulse Generation And Characterization written by Razvan Cristian Chirla and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Abstract: One of the research goals in the DiMauro group is the application of attosecond light pulses for understanding electronic processes and for molecular imaging. The objective of this dissertation work was the construction of an attosecond beamline at The Ohio State University, and the implementation of the so-called Rabbitt technique.
Towards Intense Single Attosecond Pulse Generation From A 400 Nm Driving Laser
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Author : Yan Cheng
language : en
Publisher:
Release Date : 2011
Towards Intense Single Attosecond Pulse Generation From A 400 Nm Driving Laser written by Yan Cheng and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Attosecond pulse generation is a powerful tool to study electron dynamics in atoms and molecules. However, application of attosecond pulses is limited by the low photon flux of attosecond sources. Theoretical models predict that the harmonic efficiency scales as [lambda][superscript]-6 in the plateau region of the HHG spectrum, where [lambda] is the wavelength of the driving laser. This indicates the possibility of generating more intense attosecond pulses using short wavelength driving lasers. The purpose of this work is to find a method to generate intense single attosecond pulses using a 400 nm driving laser. In our experiments, 400 nm femtosecond laser pulses are used to generate high harmonics. First, the dependence of the high harmonic generation yield on the ellipticity of 400 nm driving laser pulse is studied experimentally, and it is compared with that of 800 nm driving lasers. A semi-classical theory is developed to explain the ellipticity dependence where the theoretical calculations match experiment results very well. Next, 400 nm short pulses (sub-10 fs) are produced with a hollow core fiber and chirped mirrors. Finally, we propose a scheme to extract single attosecond pulses with the Generalized Double Optical Gating (GDOG) method.
A Laser Source For The Generation Of Intense Attosecond Pulses And Its First Applications
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Author : Hans Wolfgang Schweinberger
language : en
Publisher:
Release Date : 2014
A Laser Source For The Generation Of Intense Attosecond Pulses And Its First Applications written by Hans Wolfgang Schweinberger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Application Of A Modified Chirp Taper Scheme For Generation Of Attosecond Pulses In Xuv And Soft X Ray Fels
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Author : E. A. Schneidmiller
language : en
Publisher:
Release Date : 2021
Application Of A Modified Chirp Taper Scheme For Generation Of Attosecond Pulses In Xuv And Soft X Ray Fels written by E. A. Schneidmiller and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.