scholarly journals Simulations of plasma channel formation by knife-like nanosecond laser beam

2018 ◽  
pp. 1-39
Author(s):  
Pavel Vasilievich Sasorov ◽  
Nadejda Aleksandrovna Bobrova ◽  
Olga Gourgenovna Olkhovskaya ◽  
Gennadiy Alekseevich Bagdasarov ◽  
Aleksey Sergeevich Boldarev ◽  
...  
Keyword(s):  
Laser Beam ◽  
Plasma Channel ◽  
Nanosecond Laser ◽  
Channel Formation

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.

Laser guiding plasma channel formation criterion in highly relativistic regime

2011 ◽  
Vol 99 (24) ◽  
pp. 241501 ◽  
Author(s):  
Y. J. Gu ◽  
Z. Zhu ◽  
Q. Kong ◽  
Y. Y. Li ◽  
X. F. Li ◽  
...  
Keyword(s):  
Plasma Channel ◽  
Channel Formation ◽  
Laser Guiding ◽  
Relativistic Regime

Propagation of sinusoidal pulse laser beam in a plasma channel

2007 ◽  
Vol 14 (11) ◽  
pp. 113105 ◽  
Author(s):  
Ajay K. Upadhyay ◽  
Gaurav Raj ◽  
Rohit K. Mishra ◽  
Pallavi Jha
Keyword(s):  
Laser Beam ◽  
Pulse Laser ◽  
Plasma Channel ◽  
Pulse Laser Beam
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