scholarly journals A laser-plasma accelerator driven by two-color relativistic femtosecond laser pulses

2019 ◽  
Vol 5 (11) ◽  
pp. eaav7940 ◽  
Author(s):  
Song Li ◽  
Guangyu Li ◽  
Quratul Ain ◽  
Min Sup Hur ◽  
Antonio C. Ting ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Laser Plasma ◽  
Second Harmonic ◽  
Laser Pulses ◽  
Theoretical Work ◽  
Femtosecond Laser Pulses ◽  
Plasma Accelerator ◽  
Positron Energy ◽  
Potential Applications ◽  
Laser Plasma Accelerator

A typical laser-plasma accelerator (LPA) is driven by a single, ultrarelativistic laser pulse from terawatt- or petawatt-class lasers. Recently, there has been some theoretical work on the use of copropagating two-color laser pulses (CTLP) for LPA research. Here, we demonstrate the first LPA driven by CTLP where we observed substantial electron energy enhancements. Those results have been further confirmed in a practical application, where the electrons are used in a bremsstrahlung-based positron generation configuration, which led to a considerable boost in the positron energy as well. Numerical simulations suggest that the trailing second harmonic relativistic laser pulse is capable of sustaining the acceleration structure for much longer distances after the preceding fundamental pulse is depleted in the plasma. Therefore, our work confirms the merits of driving LPAs by two-color pulses and paves the way toward a downsizing of LPAs, making their potential applications in science and technology extremely attractive and affordable.

GeV MONOENERGETIC ELECTRON BEAM WITH LASER PLASMA ACCELERATOR

2007 ◽  
Vol 21 (03n04) ◽  
pp. 277-286
Author(s):  
V. MALKA ◽  
A. F. LIFSCHITZ ◽  
J. FAURE ◽  
Y. GLINEC
Keyword(s):  
Electron Beam ◽  
Laser Plasma ◽  
Electron Beams ◽  
Energetic Electron ◽  
Relative Energy ◽  
Plasma Accelerator ◽  
Free Electrons ◽  
Potential Applications ◽  
Laser Plasma Accelerator ◽  
Monoenergetic Electron Beam

Laser plasma accelerators produce today ultra short, quasi-monoenergetic and collimated electron beams with potential applications in material science, chemistry and medicine. The laser plasma accelerator used to produce such an electron beam is presented. The design of a laser based accelerator designed to produce more energetic electron beams with a narrow relative energy spread is also proposed here. This compact approach should permit a miniaturization and cost reduction of future accelerators and associated X-Free Electrons Lasers (XFEL).

scholarly journals Colliding Laser Pulses for Laser-Plasma Accelerator Injection Control

2010 ◽  
Author(s):  
G. R. Plateau ◽  
C. G. R. Geddes ◽  
N. H. Matlis ◽  
E. Cormier-Michel ◽  
D. E. Mittelberger ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Laser Pulses ◽  
Plasma Accelerator ◽  
Injection Control ◽  
Laser Plasma Accelerator

scholarly journals Cylindrically and non-cylindrically symmetric expansion dynamics of tin microdroplets after ultrashort laser pulse impact

2021 ◽  
Vol 127 (2) ◽  
Author(s):  
Tiago de Faria Pinto ◽  
Jan Mathijssen ◽  
Randy Meijer ◽  
Hao Zhang ◽  
Alex Bayerle ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Droplet Deformation ◽  
Cylindrically Symmetric ◽  
Linearly Polarized ◽  
Particle Hydrodynamics ◽  
Deformation Dynamics ◽  
Smoothed Particle ◽  
Asymmetric Shock

AbstractIn this work, the expansion dynamics of liquid tin micro-droplets irradiated by femtosecond laser pulses were investigated. The effects of laser pulse duration, energy, and polarization on ablation, cavitation, and spallation dynamics were studied using laser pulse durations ranging from 220 fs to 10 ps, with energies ranging from 1 to 5 mJ, for micro-droplets with an initial radius of 15 and 23 $$\upmu$$ μ m. Using linearly polarized laser pulses, cylindrically asymmetric shock waves were produced, leading to novel non-symmetric target shapes, the asymmetry of which was studied as a function of laser pulse parameters and droplet size. A good qualitative agreement was obtained between smoothed-particle hydrodynamics simulations and high-resolution stroboscopic experimental data of the droplet deformation dynamics.

scholarly journals Control of electron beam energy-spread by beam loading effects in a laser-plasma accelerator

2020 ◽  
Vol 62 (5) ◽  
pp. 055004 ◽  
Author(s):  
Guangyu Li ◽  
Quratul Ain ◽  
Song Li ◽  
Muhammad Saeed ◽  
Daniel Papp ◽  
...  
Keyword(s):  
Electron Beam ◽  
Laser Plasma ◽  
Beam Energy ◽  
Plasma Accelerator ◽  
Energy Spread ◽  
Electron Beam Energy ◽  
Beam Loading ◽  
Loading Effects ◽  
Laser Plasma Accelerator

scholarly journals Progress on laser plasma accelerator development using transversely and longitudinally shaped plasmas

2009 ◽  
Vol 10 (2-3) ◽  
pp. 130-139 ◽  
Author(s):  
Wim P. Leemans ◽  
E. Esarey ◽  
C.G.R. Geddes ◽  
Cs. Toth ◽  
C.B. Schroeder ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Plasma Accelerator ◽  
Laser Plasma Accelerator

Second-harmonic generation in plasmas produced by femtosecond laser pulses

1991 ◽  
Vol 43 (8) ◽  
pp. 4564-4567 ◽  
Author(s):  
T. Engers ◽  
W. Fendel ◽  
H. Schüler ◽  
H. Schulz ◽  
D. von der Linde
Keyword(s):  
Femtosecond Laser ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses

scholarly journals Demonstration of stable long-term operation of a kilohertz laser-plasma accelerator

2020 ◽  
Vol 23 (9) ◽  
Author(s):  
L. Rovige ◽  
J. Huijts ◽  
I. Andriyash ◽  
A. Vernier ◽  
V. Tomkus ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Plasma Accelerator ◽  
Term Operation ◽  
Laser Plasma Accelerator

Experimental verification of laser photocathode RF gun as an injector for a laser plasma accelerator

2000 ◽  
Vol 28 (4) ◽  
pp. 1133-1142 ◽  
Author(s):  
M. Uesaka ◽  
K. Kinoshita ◽  
T. Watanabe ◽  
J. Sugahara ◽  
T. Ueda ◽  
...  
Keyword(s):  
Experimental Verification ◽  
Laser Plasma ◽  
Plasma Accelerator ◽  
Photocathode Rf Gun ◽  
Rf Gun ◽  
Laser Plasma Accelerator

Generation of ultrashort coherent radiation based on a laser plasma accelerator

2019 ◽  
Vol 26 (2) ◽  
pp. 311-319 ◽  
Author(s):  
Tao Liu ◽  
Chao Feng ◽  
Dao Xiang ◽  
Jiansheng Liu ◽  
Dong Wang
Keyword(s):  
Laser Plasma ◽  
Coherent Radiation ◽  
Plasma Accelerator ◽  
Power Laser ◽  
Simple Method ◽  
Third Harmonic ◽  
Harmonic Radiation ◽  
Single Spike ◽  
Laser Plasma Accelerator ◽  
Transverse Position

A laser plasma accelerator (LPA) has the potential to realize compact free-electron laser (FEL) radiation at the regular laboratory scale. However, large initial angular divergence and energy spread dramatically hinder ways to transport the beam and realize FEL radiation. Although methods have been proposed to solve these problems, the relatively large jitter, including transverse position jitter and energy jitter, still limits the advance of these experiments. In this paper a simple method to realize coherent harmonic generation based on a LPA beam is proposed. The scheme is very compact, adopting a high-power laser split from the driver laser, a short modulator and a short radiator which has a great tolerance to these typical types of jitter. Numerical simulations indicate that coherent third-harmonic radiation with gigawatt-level power and single spike spectra can be obtained, verifying the feasibility of the scheme and indicating the capability to generate ultrashort fully coherent radiation.

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