THz radiation generation in axially magnetized collisional pair plasma

2019 ◽  
Vol 383 (15) ◽  
pp. 1772-1777 ◽  
Author(s):  
Sheetal Punia ◽  
Hitendra K. Malik
Keyword(s):  
Thz Radiation ◽  
Pair Plasma ◽  
Radiation Generation

scholarly journals Beam instabilities in a magnetized pair plasma

1999 ◽  
Vol 62 (1) ◽  
pp. 65-86 ◽  
Author(s):  
MAXIM LYUTIKOV
Keyword(s):  
Growth Rates ◽  
Particle Interaction ◽  
Kinetic Regime ◽  
Pulsar Magnetosphere ◽  
Pair Plasma ◽  
Electron Positron ◽  
Pulsar Radiation ◽  
Radiation Generation ◽  
Field Lines ◽  
Beam Instabilities

Beam instabilities in the strongly magnetized electron–positron plasma of a pulsar magnetosphere are considered. We analyse the resonance conditions and estimate the growth rates of the Cherenkov and cyclotron instabilities of the ordinary (O), extraordinary (X) and Alfvén modes in two limiting regimes: kinetic and hydrodynamic. The importance of the different instabilities as a source of coherent pulsar radiation generation is then estimated, taking into account the angular dependence of the growth rates and the limitations on the length of the coherent wave–particle interaction imposed by the curvature of the magnetic field lines. We conclude that in the pulsar magnetosphere, Cherenkov-type instabilities occur in the hydrodynamic regime, while cyclotron-type instabilities occur in the kinetic regime. We argue that electromagnetic cyclotron-type instabilities on the X, O and probably Alfvén waves are more likely to develop in the pulsar magnetosphere.

THz-radiation Generation from an Intracavity Saturable Bragg Reflector in a Magnetic Field

1998 ◽  
Vol 37 (Part 2, No. 2A) ◽  
pp. L125-L126 ◽  
Author(s):  
Nobuhiko Sarukura ◽  
Hideyuki Ohtake ◽  
Zhenlin Liu ◽  
Taro Itatani ◽  
Takeyoshi Sugaya ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Bragg Reflector ◽  
Thz Radiation ◽  
Radiation Generation

Intense THz-radiation generation from an intracavity saturable Bragg reflector in a magnetic field

1998 ◽  
Author(s):  
H. Ohtake ◽  
Zhenlin Liu ◽  
S. Izumida ◽  
N. Sarukura ◽  
Y. Segawa ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Bragg Reflector ◽  
Thz Radiation ◽  
Radiation Generation

Optimization of THz Radiation Generation from a Laser Wakefield Accelerator

2009 ◽  
Author(s):  
G. R. Plateau ◽  
N. H. Matlis ◽  
O. Albert ◽  
C. Tóth ◽  
C. G. R. Geddes ◽  
...  
Keyword(s):  
Thz Radiation ◽  
Laser Wakefield ◽  
Radiation Generation ◽  
Wakefield Accelerator ◽  
Laser Wakefield Accelerator

scholarly journals Enhanced terahertz radiation generation by two-color laser pulses propagating in plasma

2016 ◽  
Vol 34 (2) ◽  
pp. 378-383 ◽  
Author(s):  
N.K. Verma ◽  
P. Jha
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Numerical Model ◽  
Laser Pulses ◽  
Magnetized Plasma ◽  
Thz Radiation ◽  
Homogeneous Plasma ◽  
One Dimensional ◽  
Radiation Generation ◽  
Transverse Electromagnetic

AbstractA one-dimensional (1D) numerical model for studying enhanced terahertz (THz) radiation generation by mixing of ordinary and extraordinary modes of two-color laser pulses propagating in magnetized plasma has been presented. The direction of the static external magnetic field is such that one of the two laser pulses propagates in the extraordinary mode, while the other pulse propagates in the ordinary mode, through homogeneous plasma. A transverse electromagnetic wave with frequency in the THz range is generated due to the presence of the external magnetic field. It is observed that larger amplitude THz radiation can be generated by mixing of the ordinary and extraordinary modes of the two-color laser pulses as compared with the single laser pulse propagating in the extraordinary mode. Further, 2D simulations using the XOOPIC code show that the fields obtained via simulation study are compatible with those obtained from the numerical model.

scholarly journals Generation of terahertz radiation by beating of two laser beams in collisional magnetized plasma

2016 ◽  
Vol 34 (4) ◽  
pp. 569-575 ◽  
Author(s):  
A. Hematizadeh ◽  
S.M. Jazayeri ◽  
B. Ghafary
Keyword(s):  
Magnetic Field ◽  
Magnetized Plasma ◽  
Laser Beams ◽  
Thz Radiation ◽  
Plasma Parameters ◽  
Circularly Polarized ◽  
Left Hand ◽  
Polarized Waves ◽  
Radiation Generation ◽  
The Magnetic Field

AbstractThis paper presents analytical calculations for terahertz (THz) radiation by beating of two cosh-Gaussian laser beams in a density rippled collisional magnetized plasma. Lasers beams exert a ponderomotive force on the electrons of plasma in beating frequency which generates THz waves. The magnetic field was considered parallel to the direction of lasers which leads to propagate right-hand circularly polarized or left-hand circularly polarized waves in the plasma depending on the phase matching conditions. Effects of collision frequency, decentered parameter of lasers and the magnetic field strength are analyzed for THz radiation generation. By the optimization of laser and plasma parameters, the efficiency of order 27% can be achieved.

On the Peculiarities of THz Radiation Generation in a Laser Induced Plasmas

2011 ◽  
Vol 32 (10) ◽  
pp. 1243-1252 ◽  
Author(s):  
Evgeny Suvorov ◽  
Rinat Akhmedzhanov ◽  
Daniil Fadeev ◽  
Igor Ilyakov ◽  
Vyacheslav Mironov ◽  
...  
Keyword(s):  
Thz Radiation ◽  
Radiation Generation
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