Nonlinear depletion of ultrashort and relativistically strong laser pulses in an underdense plasma

1992 ◽  
Vol 4 (7) ◽  
pp. 1935-1942 ◽  
Author(s):  
S. V. Bulanov ◽  
I. N. Inovenkov ◽  
V. I. Kirsanov ◽  
N. M. Naumova ◽  
A. S. Sakharov
Keyword(s):  
Laser Pulses ◽  
Strong Laser ◽  
Underdense Plasma

Hot electrons and hard x-ray emission from relativistically strong laser pulses in underdense plasma

1996 ◽  
Author(s):  
Alexander A. Andreev ◽  
V. N. Novikov ◽  
Konstantin Y. Platonov ◽  
A. G. Samsonov
Keyword(s):  
Laser Pulses ◽  
Hot Electrons ◽  
X Ray ◽  
Strong Laser ◽  
Underdense Plasma

scholarly journals Demonstration of laser pulse amplification by stimulated Brillouin scattering

2014 ◽  
Vol 2 ◽  
Author(s):  
E. Guillaume ◽  
K. Humphrey ◽  
H. Nakamura ◽  
R. M. G. M. Trines ◽  
R. Heathcote ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Plasma Density ◽  
Brillouin Scattering ◽  
Laser System ◽  
Laser Pulses ◽  
Seed Pulse ◽  
Central Wavelength ◽  
Demonstration Experiment ◽  
Stimulated Brillouin ◽  
Underdense Plasma

Abstract The energy transfer by stimulated Brillouin backscatter from a long pump pulse (15 ps) to a short seed pulse (1 ps) has been investigated in a proof-of-principle demonstration experiment. The two pulses were both amplified in different beamlines of a Nd:glass laser system, had a central wavelength of 1054 nm and a spectral bandwidth of 2 nm, and crossed each other in an underdense plasma in a counter-propagating geometry, off-set by $\def \xmlpi #1{}\def \mathsfbi #1{\boldsymbol {\mathsf {#1}}}\let \le =\leqslant \let \leq =\leqslant \let \ge =\geqslant \let \geq =\geqslant \def \Pr {\mathit {Pr}}\def \Fr {\mathit {Fr}}\def \Rey {\mathit {Re}}10^\circ $ . It is shown that the energy transfer and the wavelength of the generated Brillouin peak depend on the plasma density, the intensity of the laser pulses, and the competition between two-plasmon decay and stimulated Raman scatter instabilities. The highest obtained energy transfer from pump to probe pulse is 2.5%, at a plasma density of $0.17 n_{cr}$ , and this energy transfer increases significantly with plasma density. Therefore, our results suggest that much higher efficiencies can be obtained when higher densities (above $0.25 n_{cr}$ ) are used.

Vacuum fluctuations and nuclear quantum optics in strong laser pulses

2007 ◽  
Author(s):  
A. Di Piazza ◽  
K. Z. Hatsagortsyan ◽  
J. Evers ◽  
C. H. Keitel
Keyword(s):  
Quantum Optics ◽  
Laser Pulses ◽  
Vacuum Fluctuations ◽  
Strong Laser

scholarly journals Electromagnetic Burst Generation during Annihilation of Magnetic Field in Relativistic Laser-Plasma Interaction

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Y. J. Gu ◽  
F. Pegoraro ◽  
P. V. Sasorov ◽  
D. Golovin ◽  
A. Yogo ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Current Sheet ◽  
Laser Plasma ◽  
Laser Pulses ◽  
Opposite Polarity ◽  
Laboratory Modeling ◽  
Relativistic Limit ◽  
Plasma Target ◽  
Formation And Evolution ◽  
Underdense Plasma

AbstractWe present the results of theoretical studies of formation and evolution of the current sheet in a colliosionless plasma during magnetic reconnection in relativistic limit. Relativistic magnetic reconnection is driven by parallel laser pulses interacting with underdense plasma target. Annihilation of laser created magnetic field of opposite polarity generates strong non-stationary electric field formed in between the region with opposite polarity magnetic field accelerating charged particles within the current sheet. This laser-plasma target configuration is discussed in regard with the laboratory modeling of charged particle acceleration and gamma flash generation in astrophysics. We present the results of 3-dimensional kinetic simulations and theoretical studies on the formation and evolution of the current sheet in a collisionless plasma during magnetic field annihilation in the ultra-relativistic limit. Annihilation of oppositively directed magnetic fields driven by two laser pulses interacting with underdense plasma target is accompanied by an electromagnetic burst generation. The induced strong non-stationary longitudinal electric field accelerates charged particles within the current sheet. Properties of the laser-plasma target configuration are discussed in the context of the laboratory modeling for charged particle acceleration and gamma flash generation in astrophysics.

Sign in / Sign up

Export Citation Format

Share Document