Laser Technology for Advanced Acceleration: Accelerating Beyond TeV

2016 ◽  
Vol 09 ◽  
pp. 151-163 ◽  
Author(s):  
Jonathan Wheeler ◽  
Gérard Mourou ◽  
Toshiki Tajima
Keyword(s):  
Laser Pulse ◽  
Near Infrared ◽  
High Efficiency ◽  
Pulse Length ◽  
Laser Pulses ◽  
Single Cycle ◽  
X Ray ◽  
Ultrafast Laser Pulses ◽  
Laser Plasma Interaction ◽  
Laser Acceleration

The implementation of the suggestion of thin film compression (TFC) allows the newest class of high power, ultrafast laser pulses (typically 20[Formula: see text]fs at near-infrared wavelengths) to be compressed to the limit of a single-cycle laser pulse (2[Formula: see text]fs). Its simplicity and high efficiency, as well as its accessibility to a single-cycle laser pulse, introduce a new regime of laser–plasma interaction that enhances laser acceleration. Single-cycle laser acceleration of ions is a far more efficient and coherent process than the known laser-ion acceleration mechanisms. The TFC-derived single-cycle optical pulse is capable of inducing a single-cycle X-ray laser pulse (with a far shorter pulse length and thus an extremely high intensity) through relativistic compression. The application of such an X-ray pulse leads to the novel regime of laser wakefield acceleration of electrons in the X-ray regime, yielding a prospect of “TeV on a chip.” This possibility of single-cycle X-ray pulses heralds zeptosecond and EW lasers (and zeptoscience). The additional invention of the coherent amplification network (CAN) fiber laser pushes the frontier of high repetition, high efficiency lasers, which are the hallmark of needed applications such as laser-driven LWFA colliders and other, societal applications. CAN addresses the crucial aspect of intense lasers that have traditionally lacked the above properties.

Science of High Energy, Single-Cycled Lasers

2019 ◽  
Vol 10 (01) ◽  
pp. 227-244
Author(s):  
Jonathan A. Wheeler ◽  
Gérard Mourou ◽  
Toshiki Tajima
Keyword(s):  
Laser Pulse ◽  
Laser Pulses ◽  
High Energy ◽  
New Developments ◽  
X Ray ◽  
Ion Accelerator ◽  
Laser Acceleration ◽  
High Field Science ◽  
New Applications ◽  
Wakefield Accelerator

With the advent of the Thin Film Compression, high energy single-cycled laser pulses have become an eminent path to the future of new high-field science. An existing CPA high power laser pulse such as a commercially available PW laser may be readily converted into a single-cycled laser pulse in the 10PW regime without losing much energy through the compression. We examine some of the scientific applications of this, such as laser ion accelerator called single-cycle laser acceleration (SCLA) and bow wake electron acceleration. Further, such a single-cycled laser pulse may be readily converted through relativistic compression into a single-cycled, X-ray laser pulse. We see that this is the quickest and very innovative way to ascend to the EW (exawatt) and zs (zeptosecond) science and technology. We suggest that such X-ray laser pulses have a broad and new horizon of applications. We have begun exploring the X-ray crystal (or nanostructured) wakefield accelerator and its broad and new applications into gamma rays. Here, we make a brief sketch of our survey of this vista of the new developments.

Demonstration of thin film compression for short-pulse X-ray generation

2019 ◽  
Vol 34 (34) ◽  
pp. 1943015
Author(s):  
D. M. Farinella ◽  
M. Stanfield ◽  
N. Beier ◽  
T. Nguyen ◽  
S. Hakimi ◽  
...  
Keyword(s):  
Thin Film ◽  
Imaging System ◽  
Short Pulse ◽  
Laser Pulses ◽  
Single Cycle ◽  
X Ray ◽  
Ultrafast Laser Pulses ◽  
Solid Density ◽  
Fs Laser ◽  
Gaussian Mode

Thin film compression to the single-cycle regime combined with relativistic compression offers a method to transform conventional ultrafast laser pulses into attosecond X-ray laser pulses. These attosecond X-ray laser pulses are required to drive wakefields in solid density materials which can provide acceleration gradients of up to TeV/cm. Here we demonstrate a nearly 99% energy efficient compression of a 6.63 mJ, 39 fs laser pulse with a Gaussian mode to 20 fs in a single stage. Further, it is shown that as a result of Kerr-lensing, the focal spot of the system is slightly shifted on-axis and can be recovered by translating the imaging system to the new focal plane. This implies that with the help of wave-front shaping optics the focusability of laser pulses compressed in this way can be partially preserved.

scholarly journals Influence of hot electrons on the spectra of iron plasma irradiated by femtosecond laser pulses with 1021 W/cm2 intensities

2017 ◽  
Vol 35 (1) ◽  
pp. 92-99 ◽  
Author(s):  
A. Stafford ◽  
A.S. Safronova ◽  
A.Ya. Faenov ◽  
T.A. Pikuz ◽  
R. Kodama ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Time Frame ◽  
Femtosecond Laser Pulses ◽  
Hot Electrons ◽  
Plasma Radiation ◽  
X Ray ◽  
Laser Plasma Interaction ◽  
Multiply Charged ◽  
Interaction Experiment ◽  
Charged Ions

AbstractThe use of laboratory experiments as plasma creating sources is a valuable tool for understanding astrophysical observations. Recently plasma created through irradiation by lasers with relativistic intensities has been used to study effects of hot electrons and X-ray pumping on X-ray formation of multiply charged ions spectra. This paper discusses the formation of K-shell Fe spectra recorded from a plasma irradiated by 35 fs pulses with intensities of 1021 W/cm2. Modeling of the spectra suggests three different regions of plasma radiation including a cold ~10 eV region, a mild ~700 eV region, and a hot ~3500 eV region. The influence of hot electrons and X-ray pumping is discussed and a comparison with K-shell Fe spectra from a 1 MA X-pinch experiment is included to highlight the differences due to the shorter time frame of the laser–plasma interaction experiment.

Core-Shell SiO2/Ag Composite Spheres Prepared by Electrical Exploding Wire Plasma Technique: Synthesis and Characterization

2021 ◽  
Vol 19 (10) ◽  
pp. 82-88
Author(s):  
Duaa A. Uamran ◽  
Qasim Hassan Ubaid ◽  
Hammad R. Humud
Keyword(s):  
Laser Pulse ◽  
Laser Pulses ◽  
Structural Features ◽  
Optical Absorption Spectroscopy ◽  
Core Shell ◽  
X Ray Diffraction ◽  
Shell Nanoparticles ◽  
X Ray ◽  
Photocatalytic Activities ◽  
Core Shell Nanoparticles

Core-shell nanoparticles (SiO2/Ag) were manufactured by using a two-step process: Electric detonation of Ag. Wire in colloidal solution particles then by using laser pulses, nanoparticles are released. The structural features of these nanoparticles were checked by using X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The (XRD) study showed the progressive coverage of SiO2/Ag by nanoparticles according to the energies of the laser pulse. Measurements of morphology and EDX confirmed the Core/shell structure with particle size at the nano level. It confirmed that preliminary analysis consists of a SiO2 core and an Ag shell from FESEM. The surface of the microscopic balls (SiO2) has been covered completely and homogeneously with Ag nanoparticles, Moreover, Ultraviolet-Visible, and by optical absorption spectroscopy, the Nanoparticles with core crust SiO2/Ag showed excellent photocatalytic activities at various concentrations and laser pulse energy.

scholarly journals A simple instrument to find spatiotemporal overlap of optical/X-ray light at free-electron lasers

2019 ◽  
Vol 26 (3) ◽  
pp. 647-652 ◽  
Author(s):  
Takahiro Sato ◽  
James M. Glownia ◽  
Matthiew R. Ware ◽  
Matthieu Chollet ◽  
Silke Nelson ◽  
...  
Keyword(s):  
Free Electron ◽  
Near Infrared ◽  
Laser Pulses ◽  
X Rays ◽  
X Ray ◽  
Optical Wavelength ◽  
Linac Coherent Light Source ◽  
Large Pulse ◽  
Optical Laser ◽  
Temporal Overlap

A compact and robust diagnostic to determine spatial and temporal overlap between X-ray free-electron laser and optical laser pulses was developed and evaluated using monochromatic X-rays from the Linac Coherent Light Source. It was used to determine temporal overlap with a resolution of ∼10 fs, despite the large pulse energy fluctuations of the monochromatic X-ray pulses, and covers a wide optical wavelength range from ultraviolet to near-infrared with a single configuration.

Non-linear optical hazards from near-infrared ultrafast laser pulses in ocular tissue

2019 ◽  
Author(s):  
Adam R. Boretsky ◽  
Joseph E. Clary ◽  
Gary D. Noojin ◽  
Dixie J. Burner ◽  
Benjamin A. Rockwell
Keyword(s):  
Near Infrared ◽  
Laser Pulses ◽  
Ultrafast Laser ◽  
Ocular Tissue ◽  
Ultrafast Laser Pulses ◽  
Non Linear ◽  
Linear Optical

The generation of mono-energetic electron beams from ultrashort pulse laser–plasma interactions

2006 ◽  
Vol 364 (1840) ◽  
pp. 663-677 ◽  
Author(s):  
S.P.D Mangles ◽  
K Krushelnick ◽  
Z Najmudin ◽  
M.S Wei ◽  
B Walton ◽  
...  
Keyword(s):  
Plasma Wave ◽  
Pulse Length ◽  
Energetic Electron ◽  
Laser Pulses ◽  
Relativistic Electrons ◽  
Ultrashort Pulse Laser ◽  
Laser Plasma Interactions ◽  
Direct Laser ◽  
High Intensity Laser ◽  
Laser Acceleration

The physics of the interaction of high-intensity laser pulses with underdense plasma depends not only on the interaction intensity but also on the laser pulse length. We show experimentally that as intensities are increased beyond 10 20  W cm −2 the peak electron acceleration increases beyond that which can be produced from single stage plasma wave acceleration and it is likely that direct laser acceleration mechanisms begin to play an important role. If, alternatively, the pulse length is reduced such that it approaches the plasma period of a relativistic electron plasma wave, high-power interactions at much lower intensity enable the generation of quasi-mono-energetic beams of relativistic electrons.

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