Nonlinear Thomson scattering of a tightly focused relativistically intense laser pulse by an ensemble of particles

2020 ◽  
Vol 50 (10) ◽  
pp. 922-928
Author(s):  
O E Vais ◽  
V Yu Bychenkov
Keyword(s):  
Laser Pulse ◽  
Thomson Scattering ◽  
Intense Laser ◽  
Intense Laser Pulse

RELATIVISTIC SELF-FOCUSING OF AN ULTRA-INTENSE LASER PULSE IN A PLASMA

1995 ◽  
Vol 04 (03) ◽  
pp. 547-566 ◽  
Author(s):  
G. MAINFRAY
Keyword(s):  
Laser Pulse ◽  
Thomson Scattering ◽  
Hydrogen Gas ◽  
Intense Laser ◽  
Gas Jet ◽  
Intense Laser Pulse ◽  
Self Focusing ◽  
Rayleigh Length ◽  
Relativistic Regime ◽  
Order Of Magnitude

New compact multiterawatt lasers allow us to study the relativistic regime of laserplasma interaction. The propagation of a multiterawatt subpicosecond laser pulse in a plasma has been investigated theoretically and experimentally. A 10 TW laser pulse at a 1064 nm wavelength has been focused in a hydrogen gas jet. Thomson scattering observations show that a relativistic self-focusing and channeling occur when the laser power exceeds a critical value predicted by theory. The amount of enhancement in self-focused intensity exceeds one order of magnitude. The laser pulse propagates through the plasma over a distance much larger than the Rayleigh length determined by vacuum diffraction.

scholarly journals Evolution of a high-density electron beam in the field of a super-intense laser pulse

2008 ◽  
Vol 26 (3) ◽  
pp. 397-409 ◽  
Author(s):  
V.V. Kulagin ◽  
V.A. Cherepenin ◽  
M.S. Hur ◽  
J. Lee ◽  
H. Suk
Keyword(s):  
Electron Beam ◽  
Laser Pulse ◽  
Equations Of Motion ◽  
Thomson Scattering ◽  
High Density ◽  
Intense Laser ◽  
Low Density ◽  
Intense Laser Pulse ◽  
Particle In Cell ◽  
The One

AbstractThe evolution of a high-density electron beam in the field of a super-intense laser pulse is considered. The one-dimensional (1D) theory for the description of interaction, taking into account the space-charge forces of the beam, is developed, and exact solutions for the equations of motion of the electrons are found. It was shown that the length of the high-density electron beam increases slowly in time after initial compression of the beam by the laser pulse as opposed to the low-density electron beam case, where the length is constant on average. Also, for the high-density electron beam, the sharp peak frozen into the density distribution can appear in addition to a microbunching, which is characteristic for a low-density electron beam in a super-intense laser field. Characteristic parameters for the evolution of the electron beam are calculated by an example of a step-like envelope of the laser pulse. Comparison with 1D particle-in-cell simulations shows adequacy of the derived theory. The considered issue is very important for a special two-pulse realization of a Thomson scattering scheme, where one high-intensity laser pulse is used for acceleration, compression and microbunching of the electron beam, and the other probe counter-streaming laser pulse is used for scattering with frequency up-shifting and amplitude enhancement.

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
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