Ultra-intense laser propagation with measurement of backscattered light image and spectrum

2000 ◽  
Author(s):  
Takeshi Miyakoshi ◽  
Kazuo A. Tanaka ◽  
Ryosuke Kodama ◽  
Kunioki Mima ◽  
Tatsuhiko Yamanaka ◽  
...  
Keyword(s):  
Intense Laser ◽  
Laser Propagation ◽  
Light Image

Post-solitons and electron vortices generated by femtosecond intense laser interacting with uniform near-critical-density plasmas

2021 ◽  
Author(s):  
Dong-Ning Yue ◽  
Min Chen ◽  
Yao Zhao ◽  
Pan-Fei Geng ◽  
Xiao-Hui Yuan ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Critical Density ◽  
Laser Pulses ◽  
Intense Laser ◽  
Nonlinear Structures ◽  
Particle In Cell ◽  
Laser Propagation ◽  
Laser Driver ◽  
Linearly Polarized ◽  
Dimensional Simulation

Abstract Generation of nonlinear structures, such as stimulated Raman side scattering waves, post-solitons and electron vortices, during ultra-short intense laser pulse transportation in near-critical-density (NCD) plasmas are studied by using multi-dimensional particle-in-cell (PIC) simulations. In two-dimensional geometries, both P- and S- polarized laser pulses are used to drive these nonlinear structures and to check the polarization effects on them. In the S-polarized case, the scattered waves can be captured by surrounding plasmas leading to the generation of post-solitons, while the main pulse excites convective electric currents leading to the formation of electron vortices through Kelvin-Helmholtz instability (KHI). In the P-polarized case, the scattered waves dissipate their energy by heating surrounding plasmas. Electron vortices are excited due to the hosing instability of the drive laser. These polarization dependent physical processes are reproduced in two different planes perpendicular to the laser propagation direction in three-dimensional simulation with linearly polarized laser driver. The current work provides inspiration for future experiments of laser-NCD plasma interactions.

Stability of intense laser propagation in an underdense hollow channel plasma

1996 ◽  
Vol 3 (5) ◽  
pp. 1700-1708 ◽  
Author(s):  
T. C. Chiou ◽  
T. Katsouleas ◽  
W. B. Mori
Keyword(s):  
Intense Laser ◽  
Laser Propagation

scholarly journals Diagnosis of peak laser intensity from high-energy ion measurements during intense laser interactions with underdense plasmas

2000 ◽  
Vol 18 (4) ◽  
pp. 595-600 ◽  
Author(s):  
K. KRUSHELNICK ◽  
E. CLARK ◽  
Z. NAJMUDIN ◽  
M. SALVATI ◽  
M.I.K. SANTALA ◽  
...  
Keyword(s):  
Laser Pulses ◽  
High Energy ◽  
Intense Laser ◽  
Power Laser ◽  
Laser Propagation ◽  
Spatially Resolved ◽  
Ion Energies ◽  
Underdense Plasmas ◽  
Ion Emission ◽  
Helium Neon

Experiments were performed using high-power laser pulses (greater than 50 TW) focused into underdense helium, neon, or deuterium plasmas (ne ≤ 5 × 1019 cm−3). Ions having energies greater than 300 keV were measured to be produced primarily at 90° to the axis of laser propagation. Ion energies greater than 6 MeV were recorded from interactions with neon. Spatially resolved pinhole images of the ion emission were also obtained and were used to estimate the intensity of the focused radiation in the interaction region.

scholarly journals Effects of relativistic electron temperature on parametric instabilities for intense laser propagation in underdense plasma

2014 ◽  
Vol 21 (11) ◽  
pp. 112114 ◽  
Author(s):  
Yao Zhao ◽  
Jun Zheng ◽  
Min Chen ◽  
Lu-Le Yu ◽  
Su-Ming Weng ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Relativistic Electron ◽  
Intense Laser ◽  
Laser Propagation ◽  
Parametric Instabilities ◽  
Underdense Plasma

scholarly journals Electromagnetic radiation from laser wakefields in underdense plasma

2014 ◽  
Vol 2 ◽  
Author(s):  
Yue Liu ◽  
Wei-Min Wang ◽  
Zheng-Ming Sheng
Keyword(s):  
Laser Pulse ◽  
Electromagnetic Radiation ◽  
Intense Laser ◽  
Moderate Intensity ◽  
Nonlinear Structure ◽  
Laser Propagation ◽  
Highly Nonlinear ◽  
A Chain ◽  
Underdense Plasma ◽  
Transverse Electron

AbstractIt is demonstrated by simulations and analysis that a wakefield driven by an ultrashort intense laser pulse in underdense plasma can emit tunable electromagnetic radiation along the laser propagation direction. The profile of such a kind of radiation is closely associated with the structure of the laser wakefield. In general, electromagnetic radiation in the terahertz range with its frequency a few times the electron plasma frequency can be generated in the moderate intensity regime. In the highly nonlinear case, a chain of radiation pulses is formed corresponding to the nonlinear structure of the wake. Study shows that the radiation is associated with the self-modulation process of the laser pulse in the wakefield and resulting transverse electron momenta from modulated asymmetric laser fields.

Dynamics of intense laser propagation in underdense plasma: Polarization dependence

2012 ◽  
Vol 19 (7) ◽  
pp. 073111 ◽  
Author(s):  
D. K. Singh ◽  
J. R. Davies ◽  
G. Sarri ◽  
F. Fiuza ◽  
L. O. Silva
Keyword(s):  
Polarization Dependence ◽  
Intense Laser ◽  
Laser Propagation ◽  
Underdense Plasma

Atoms in Intense Laser Fields

2009 ◽  
Author(s):  
C. J. Joachain ◽  
N. J. Kylstra ◽  
R. M. Potvliege
Keyword(s):  
Intense Laser ◽  
Intense Laser Fields ◽  
Laser Fields
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