Solitary waves of laser pulse in a plasma channel

2011 ◽  
Vol 18 (3) ◽  
pp. 033104 ◽  
Author(s):  
Shan Zhang ◽  
Bai-Song Xie ◽  
Xue-Ren Hong ◽  
Hai-Cheng Wu ◽  
Xue-Yan Zhao
Keyword(s):  
Laser Pulse ◽  
Solitary Waves ◽  
Plasma Channel

Wakefield effects and solitary waves of an intense short laser pulse propagation in a plasma channel

2011 ◽  
Vol 18 (10) ◽  
pp. 103106 ◽  
Author(s):  
Xue-Ren Hong ◽  
Bai-Song Xie ◽  
Shan Zhang ◽  
Hai-Cheng Wu ◽  
Xue-Yan Zhao
Keyword(s):  
Laser Pulse ◽  
Solitary Waves ◽  
Pulse Propagation ◽  
Plasma Channel ◽  
Short Laser Pulse

Electromagnetic-wave-pumped free-electron laser in a plasma channel

1997 ◽  
Vol 58 (4) ◽  
pp. 613-621 ◽  
Author(s):  
JETENDRA PARASHAR ◽  
H. D. PANDEY ◽  
A. K. SHARMA ◽  
V. K. TRIPATHI
Keyword(s):  
Electron Beam ◽  
Electromagnetic Wave ◽  
Laser Radiation ◽  
Laser Pulse ◽  
Free Electron Laser ◽  
Relativistic Electron Beam ◽  
Plasma Channel ◽  
Beam Quality ◽  
Coherent Radiation ◽  
Millimetre Wave

An intense short laser pulse or a millimetre wave propagating through a plasma channel may act as a wiggler for the generation of shorter wavelengths. When a relativistic electron beam is launched into the channel from the opposite direction, the laser radiation is Compton/Raman backscattered to produce coherent radiation at shorter wavelengths. The scheme, however, requires a superior beam quality with energy spread less than 1% in the Raman regime.

A plasma channel scheme for the interaction of an intense femtosecond laser pulse with a deuterium cluster jet

2008 ◽  
Vol 47 (2) ◽  
pp. 303-307 ◽  
Author(s):  
G. L. Chen ◽  
H. Y. Lu ◽  
C. Wang ◽  
J. S. Liu ◽  
R. X. Li ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Femtosecond Laser ◽  
Femtosecond Laser Pulse ◽  
Plasma Channel

Direct electron acceleration by chirped laser pulse in a cylindrical plasma channel

2020 ◽  
Vol 29 (8) ◽  
pp. 084103
Author(s):  
Yong-Nan Hu ◽  
Li-Hong Cheng ◽  
Zheng-Wei Yao ◽  
Xiao-Bo Zhang ◽  
Ai-Xia Zhang ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Plasma Channel ◽  
Electron Acceleration ◽  
Cylindrical Plasma ◽  
Chirped Laser Pulse

scholarly journals Effect of self focusing on the prolongation of laser produced plasma channel

2009 ◽  
Vol 27 (1) ◽  
pp. 33-39 ◽  
Author(s):  
U. Verma ◽  
A.K. Sharma
Keyword(s):  
Theoretical Model ◽  
Time Delay ◽  
Laser Pulse ◽  
Density Profile ◽  
Plasma Channel ◽  
Ion Density ◽  
Pulse Technique ◽  
Recombination Time ◽  
Self Focusing ◽  
Gaseous Plasma

AbstractA theoretical model for the prolongation of lifetime of a gaseous plasma channel formed by two pulse technique at laser intensities below the tunnel ionization threshold is developed. The first laser pulse ionizes the gas completely on the axis and partially off the axis, causing self-defocusing of the pulse. After the passage of the pulse, the plasma expands radially, creating an atom/ion density profile with a minimum on the axis. Partial recombination also sets in. As the second pulse arrives, after a time delay of less than the recombination time (~ns), the electrons get heated, and the recombination rate is slowed down. The second pulse self focuses, enhancing the heating rate and lengthening the lifetime of the plasma channel.

scholarly journals Inverse Faraday effect in a relativistic laser channel

2001 ◽  
Vol 19 (1) ◽  
pp. 133-136 ◽  
Author(s):  
I. KOSTYUKOV ◽  
G. SHVETS ◽  
N.J. FISCH ◽  
J.M. RAX
Keyword(s):  
Magnetic Field ◽  
Angular Momentum ◽  
Laser Radiation ◽  
Laser Pulse ◽  
Faraday Effect ◽  
Plasma Channel ◽  
Axial Magnetic Field ◽  
Absorbed Energy ◽  
Circularly Polarized ◽  
Inverse Faraday Effect

Interaction between energetic electrons and a circularly polarized laser pulse in a relativistic plasma channel is studied. Laser radiation can be resonantly absorbed by electrons executing betatron oscillations in the channel and absorbing angular momentum from the laser. The absorbed angular momentum manifests itself as a strong axial magnetic field (inverse Faraday effect). The magnitude of this magnetic field is calculated and related to the amount of the absorbed energy.

Plasma channel formation in the knife-like focus of laser beam

2020 ◽  
Vol 86 (3) ◽  
Author(s):  
O. G. Olkhovskaya ◽  
G. A. Bagdasarov ◽  
N. A. Bobrova ◽  
V. A. Gasilov ◽  
L. V. N. Goncalves ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Laser Beam ◽  
Plasma Channel ◽  
Focal Length ◽  
Computer Code ◽  
Nanosecond Laser Pulse ◽  
Nanosecond Laser ◽  
Channel Formation ◽  
Azimuthal Symmetry ◽  
Sufficient Degree

The plasma channel formation in the focus of a knife-like nanosecond laser pulse irradiating a gas target is studied theoretically, and in gas-dynamics computer simulations. The distribution of the electromagnetic field in the focus region, obtained analytically, is used to calculate the energy deposition in the plasma, which then is implemented in the magnetohydrodynamic computer code. The modelling of the channel evolution shows that the plasma profile, which can guide the laser pulse, is formed by the tightly focused short knife-like lasers. The results of the simulations show that a proper choice of the convergence angle of a knife-like laser beam (determined by the focal length of the last cylindrical lens), and laser pulse duration may provide a sufficient degree of azimuthal symmetry of the formed plasma channel.

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