Effect and mechanism of initial phase on electron radiation under linearly polarized Gaussian laser pulse

2021 ◽  
Author(s):  
Penghang Yu ◽  
Yiqiu Wang ◽  
Jin Yan ◽  
Jianping Chang ◽  
Youwei Tian
Keyword(s):  
Laser Pulse ◽  
Initial Phase ◽  
Electron Radiation ◽  
Linearly Polarized

scholarly journals Electron energy enhancement by a circularly polarized laser pulse in vacuum

2009 ◽  
Vol 27 (4) ◽  
pp. 635-642 ◽  
Author(s):  
K.P. Singh ◽  
D.N. Gupta ◽  
V. Sajal
Keyword(s):  
Laser Pulse ◽  
Electron Energy ◽  
Initial Phase ◽  
Spot Size ◽  
Maximum Energy ◽  
Laser Spot Size ◽  
Phase Dependence ◽  
Circularly Polarized ◽  
Linearly Polarized ◽  
Initial Electron Energy

AbstractEnergy enhancement by a circularly polarized laser pulse during acceleration of the electrons by a Gaussian laser pulse has been investigated. The electrons close to the temporal peak of the laser pulse show strong initial phase dependence for a linearly polarized laser pulse. The energy gained by the electrons close to the rising edge of the pulse does not show initial phase dependence for either linearly- or circularly-polarized laser pulse. The maximum energy of the electrons gets enhanced for a circularly polarized in comparison to a linearly polarized laser pulse due to axial symmetry of the circularly polarized pulse. The variation of electron energy with laser spot size, laser intensity, initial electron energy, and initial phase has been studied.

scholarly journals Cylindrically and non-cylindrically symmetric expansion dynamics of tin microdroplets after ultrashort laser pulse impact

2021 ◽  
Vol 127 (2) ◽  
Author(s):  
Tiago de Faria Pinto ◽  
Jan Mathijssen ◽  
Randy Meijer ◽  
Hao Zhang ◽  
Alex Bayerle ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Droplet Deformation ◽  
Cylindrically Symmetric ◽  
Linearly Polarized ◽  
Particle Hydrodynamics ◽  
Deformation Dynamics ◽  
Smoothed Particle ◽  
Asymmetric Shock

AbstractIn this work, the expansion dynamics of liquid tin micro-droplets irradiated by femtosecond laser pulses were investigated. The effects of laser pulse duration, energy, and polarization on ablation, cavitation, and spallation dynamics were studied using laser pulse durations ranging from 220 fs to 10 ps, with energies ranging from 1 to 5 mJ, for micro-droplets with an initial radius of 15 and 23 $$\upmu$$ μ m. Using linearly polarized laser pulses, cylindrically asymmetric shock waves were produced, leading to novel non-symmetric target shapes, the asymmetry of which was studied as a function of laser pulse parameters and droplet size. A good qualitative agreement was obtained between smoothed-particle hydrodynamics simulations and high-resolution stroboscopic experimental data of the droplet deformation dynamics.

Double ionization of hydrogen molecules in a high-intensity linearly polarized laser pulse

2021 ◽  
Vol 764 ◽  
pp. 138214
Author(s):  
Dan Wu ◽  
Qingyi Li ◽  
Jun Wang ◽  
Fuming Guo ◽  
Jigen Chen ◽  
...  
Keyword(s):  
Laser Pulse ◽  
High Intensity ◽  
Double Ionization ◽  
Hydrogen Molecules ◽  
Linearly Polarized

Plasma block acceleration based upon the interaction between double targets and an ultra-intense linearly polarized laser pulse

2018 ◽  
Vol 25 (4) ◽  
pp. 043102 ◽  
Author(s):  
Yanxia Xu ◽  
Jiaxiang Wang ◽  
Heinrich Hora ◽  
Xin Qi ◽  
Yifan Xing ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Linearly Polarized ◽  
Double Targets

The effect of laser pulse parameters and initial phase on the acceleration of electrons in a vacuum

2008 ◽  
Vol 77 (4) ◽  
pp. 045401 ◽  
Author(s):  
Kunwar Pal Singh ◽  
Devki Nandan Gupta ◽  
Hitendra K Malik
Keyword(s):  
Laser Pulse ◽  
Initial Phase ◽  
Pulse Parameters

scholarly journals Intense local plasma heating by stopping of ultrashort ultraintense laser pulse in dense plasma

2007 ◽  
Vol 25 (4) ◽  
pp. 631-638 ◽  
Author(s):  
W. Yu ◽  
M. Y. Yu ◽  
H. Xu ◽  
Y. W. Tian ◽  
J. Chen ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Plasma Oscillation ◽  
Plasma Heating ◽  
Critical Density ◽  
Deposition Process ◽  
Particle In Cell ◽  
Linearly Polarized ◽  
Plasma Slab ◽  
Cell Simulation ◽  
Channel Boundary

AbstractSelf-trapping, stopping, and absorption of an ultrashort ultraintense linearly polarized laser pulse in a finite plasma slab of near-critical density is investigated by particle-in-cell simulation. As in the underdense plasma, an electron cavity is created by the pressure of the transmitted part of the light pulse and it traps the latter. Since the background plasma is at near-critical density, no wake plasma oscillation is created. The propagating self-trapped light rapidly comes to a stop inside the slab. Subsequent ion Coulomb explosion of the stopped cavity leads to explosive expulsion of its ions and formation of an extended channel having extremely low plasma density. The energetic Coulomb-exploded ions form shock layers of high density and temperature at the channel boundary. In contrast to a propagating pulse in a lower density plasma, here the energy of the trapped light is deposited onto a stationary and highly localized region of the plasma. This highly localized energy-deposition process can be relevant to the fast ignition scheme of inertial fusion.

scholarly journals Spontaneous emergence of non-planar electron orbits during direct laser acceleration by a linearly polarized laser pulse

2016 ◽  
Vol 23 (2) ◽  
pp. 023111 ◽  
Author(s):  
A. V. Arefiev ◽  
V. N. Khudik ◽  
A. P. L. Robinson ◽  
G. Shvets ◽  
L. Willingale
Keyword(s):  
Laser Pulse ◽  
Direct Laser ◽  
Linearly Polarized ◽  
Laser Acceleration ◽  
Planar Electron
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