Nonlinear Interaction of an Electromagnetic Wave with a Plasma Layer in the Presence of a Static Magnetic Field. III. Theory of Mixing

1964 ◽  
Vol 135 (2A) ◽  
pp. A369-A373 ◽  
Author(s):  
E. B. Barrett ◽  
R. F. Whitmer ◽  
S. J. Tetenbaum
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Wave ◽  
Static Magnetic Field ◽  
Nonlinear Interaction ◽  
Plasma Layer

RAYONNEMENT FORTEMENT ACCRU PRÉSENTÉ PAR UNE ANTENNE ENROBÉE D'UNE GAINE DIÉLECTRIQUE ET D'UNE COUCHE DE PLASMA

1967 ◽  
Vol 45 (10) ◽  
pp. 3367-3380
Author(s):  
A. M. Messiaen ◽  
P. E. Vandenplas
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field ◽  
Dielectric Layer ◽  
Essential Role ◽  
Plasma Layer ◽  
Plasma Sheath ◽  
Operating Frequency

The plasma sheath existing between an antenna and a surrounding plasma layer plays an essential role. It is predicted that, for a given operating frequency, there exist certain plasma densities for which the system is resonant, and this very strongly enhanced radiation is fully confirmed by experiments. This combination of dielectric layer and plasma enables to tune an antenna even when its dimensions are much smaller than the vacuum wavelength. The influence of a static magnetic field is discussed.The same system can also be used as a frequency-sensitive receiving aerial.

scholarly journals Efficient THz Generation by Nonlinear Interaction of Gaussian Laser Beam With the Anharmonic and Rippled CNTs Aligned Vertically in the Array

2021 ◽  
Author(s):  
Sandeep Kumar ◽  
Shivani Vij ◽  
Niti Kant ◽  
Vishal Thakur
Keyword(s):  
Magnetic Field ◽  
Carbon Nanotubes ◽  
Laser Beam ◽  
Static Magnetic Field ◽  
Nonlinear Interaction ◽  
Transverse Velocity ◽  
Dielectric Surface ◽  
Thz Radiation ◽  
Gaussian Laser Beam ◽  
Vertically Aligned

Abstract We purpose a theoretical analysis for the generation of efficient terahertz (THz) radiation by using the nonlinear interaction of Gaussian laser beam with vertically aligned anharmonic, and rippled carbon nanotubes (CNTs) array. This array of vertically aligned carbon nanotubes (VA-CNTs) is embedded on the base of the dielectric surface. The VA-CNTs have been magnetized by applying a static magnetic field mutually perpendicular to the direction of propagation of the Gaussian beam and length of CNTs. The Gaussian laser beam passing through the CNTs exerts a nonlinear ponderomotive force on the electrons of CNTs and provides them resonant nonlinear transverse velocity. This produces the nonlinear current which is further responsible for the generation of THz radiation. The anharmonicity plays a vital role in the efficient generation of THz radiation. The anharmonicity arises due to the nonlinear variation of restoration force on the various electrons of CNTs. This anharmonicity in the electrons of CNTs helps in broadening the resonance peak. We have observed that externally applied static magnetic field 110 kg to 330 kg) also paves the way for the enhancement of the normalized THz amplitude.

Durchgang von Mikrowellen durch ebene Plasmaschichten

1962 ◽  
Vol 17 (1) ◽  
pp. 59-64
Author(s):  
K. Hain ◽  
M. Tutter
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Wave ◽  
Static Magnetic Field ◽  
Plane Electromagnetic Wave ◽  
Reflection And Transmission ◽  
Plasma Slab ◽  
Plane Plasma

The reflection and transmission of a plane electromagnetic wave propagating through a plane plasma slab with and without a static magnetic field is computed.

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