Non-linear absorption of an intense laser pulse propagating in wiggler-assisted underdense collisional plasma

2019 ◽  
Vol 59 (9) ◽  
pp. e201900001 ◽  
Author(s):  
Mehdi Abedi-Varaki ◽  
Nasser Panahi
Keyword(s):  
Laser Pulse ◽  
Collisional Plasma ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Linear Absorption ◽  
Non Linear

High order harmonic generation by non-linear reflection of a pedestal-free intense laser pulse on a plasma

2004 ◽  
Vol 78 (7-8) ◽  
pp. 901-904 ◽  
Author(s):  
G. Doumy ◽  
S. Dobosz ◽  
P. D’Oliveira ◽  
P. Monot ◽  
M. Perdrix ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Harmonic Generation ◽  
High Order ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
High Order Harmonic Generation ◽  
High Order Harmonic ◽  
Non Linear

scholarly journals Electron acceleration by an intense laser pulse inside a density profile induced by non-linear pulse evolution

2018 ◽  
Vol 36 (1) ◽  
pp. 41-48 ◽  
Author(s):  
M. Pishdast ◽  
J. Yazdanpanah ◽  
S. A. Ghasemi
Keyword(s):  
Laser Pulse ◽  
Density Profile ◽  
Plasma Heating ◽  
Intense Laser ◽  
Physical Parameters ◽  
Intense Laser Pulse ◽  
Non Linear ◽  
Linear Pulse ◽  
Density Scale ◽  
Scale Length

AbstractBy sophisticated application of particle-in-cell simulations, we demonstrate the ultimate role of non-linear pulse evolutions in accelerating electrons during the entrance of an intense laser pulse into a preformed density profile. As a key point in our discussions, the non-linear pulse evolutions are found to be very fast even at very low plasma densities, provided that the pulse length exceeds the local plasma wavelength. Therefore, these evolutions are sufficiently developed during the propagation of typical short density scale lengths occurred at high contrast ratios of the pulse, and lead to plasma heating via stochastic acceleration in multi-waves. Further analysis of simulation data at different physical parameters indicates that the rate of evolutions increases with the plasma density leading to higher plasma heating and overgrown energetic electrons. In the same way, shortening the density scale length results into increase in the evolution rate and, simultaneously, decrease in the interaction time. This behavior can describe the observed optimum value of pre-plasma scale length for the maximum electron heating.

Reduction of the Coherence Time of an Intense Laser Pulse Propagating through a Plasma

2002 ◽  
Vol 88 (19) ◽  
Author(s):  
J. Fuchs ◽  
C. Labaune ◽  
H. Bandulet ◽  
P. Michel ◽  
S. Depierreux ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Coherence Time ◽  
Intense Laser ◽  
Intense Laser Pulse

scholarly journals Focusing of intense laser pulse by a hollow cone

2010 ◽  
Vol 28 (2) ◽  
pp. 293-298 ◽  
Author(s):  
Wei Yu ◽  
Lihua Cao ◽  
M.Y. Yu ◽  
A.L. Lei ◽  
Z.M. Sheng ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Strong Field ◽  
High Energy ◽  
Plasma Boundary ◽  
High Energy Density ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Hollow Cone ◽  
Conical Channel ◽  
Boundary Plasma

AbstractIt is shown that an intense laser pulse can be focused by a conical channel. This anomalous light focusing can be attributed to a hitherto ignored effect in nonlinear optics, namely that the boundary response depends on the light intensity: the inner cone surface is ionized and the laser pulse is in turn modified by the resulting boundary plasma. The interaction creates a new self-consistently evolving light-plasma boundary, which greatly reduces reflection and enhances forward propagation of the light pulse. The hollow cone can thus be used for attaining extremely high light intensities for applications in strong-field and high energy-density physics and other areas.

scholarly journals Post-transient relaxation in graphene after an intense laser pulse

2013 ◽  
Vol 222 (5) ◽  
pp. 1263-1270 ◽  
Author(s):  
J. Zhang ◽  
T. Li ◽  
J. Wang ◽  
J. Schmalian
Keyword(s):  
Laser Pulse ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Transient Relaxation

Characterization of ultra-intense laser in radiation damping regime using ponderomotive scattering

2022 ◽  
Author(s):  
Amol Holkundkar ◽  
Felix Mackenroth
Keyword(s):  
Laser Pulse ◽  
Electron Bunch ◽  
Input Parameter ◽  
Radiation Reaction ◽  
Quantitative Agreement ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Scattered Electron ◽  
Novel Approach ◽  
Particle Simulations

Abstract We present a novel approach to analyzing phase-space distributions of electrons ponderomotively scattered off an ultra-intense laser pulse and comment on implications for thus conceivable in-situ laser-characterization schemes. To this end, we present fully relativistic test particle simulations of electrons scattered from an ultra-intense, counter-propagating laser pulse. The simulations unveil non-trivial scalings of the scattered electron distribution with the laser intensity, pulse duration, beam waist, and energy of the electron bunch. We quantify the found scalings by means of an analytical expression for the scattering angle of an electron bunch ponderomotively scattered from a counter-propagating, ultra-intense laser pulse, also accounting for radiation reaction (RR) through the Landau-Lifshitz (LL) model. For various laser and bunch parameters, the derived formula is in excellent quantitative agreement with the simulations. We also demonstrate how in the radiation-dominated regime a simple re-scaling of our model's input parameter yields quantitative agreement with numerical simulations based on the LL model.

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