Impact of nonlinear absorption on propagation of microwave in a plasma filled rectangular waveguide

Sobhani, Hassan; Vaziri, Manouchehr; Rooholamininejad, Hosein; Bahrampour, Abbas

doi:10.1080/17455030.2015.1137655

Cited by 14 publications

(11 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This electron density distribution can be produced by different sources of energy (Kaur, Sharma & Salih 2009; Sobhani et al. 2016 c , d ). The -component of (2.7) can be deduced as where is the permittivity of the plasma medium at the THz frequency .…”

Section: Theoretical Analysismentioning

confidence: 99%

Effective factors on twisted terahertz radiation generation in a rippled plasma

2017

View full text Add to dashboard Cite

Based on the beating of two Laguerre–Gaussian laser beams in a rippled plasma medium, the effective factors such as plasma density, Gouy phase and orbital angular momentums of input lasers on the output twisted terahertz radiation are investigated. As a result, the amplitude of the generated vortex terahertz radiation is an increasing function of plasma density. The vortex terahertz intensity is strongly dependent on the orbital angular momentum of the input lasers. The terahertz output amplitude increases by decreasing the orbital angular momentum of the Laguerre–Gaussian input lasers. Here, by employing a suitably ripple wavenumber, the destroyer effect of the relative Gouy phase of the input lasers is removed, and perfect phase matching is satisfied.

show abstract

Section: Theoretical Analysismentioning

confidence: 99%

Effective factors on twisted terahertz radiation generation in a rippled plasma

2017

View full text Add to dashboard Cite

show abstract

“…, where e m k T 8 , where n 00 and n 0 are the electron density in the absence and presence of the MW electric field, respectively [8,27]. The dielectric permittivity varies as a function of the sum of electric fields of TE 10 and TE 20 modes, which is con-…”

Section: Device Modeling and Analysismentioning

confidence: 99%

“…The electron density modication in the plasma by the ponderomotive force of strong-power MW has been investigated [26]. Propagating high power MW in a plasma-filled metallic waveguide has been surveyed [23,27].…”

Section: Introductionmentioning

confidence: 99%

“…0 and k B are the equilibrium temperature of plasma and Boltzmann constant, respectively[27,31]. The electron density, modified by the ponderomotive force, may be written as n 0 = n e EE 00 * h -…”

mentioning

confidence: 99%

“…The separated amplitudes are substituted in the MW field propagation equation through the plasma-filled rectangular waveguide (which is demonstrated in[27]). Then the real and imaginary parts of the MW field propagation equation are separated for each mode and some mathematical manipulations are employed.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Mode filtering based on ponderomotive force nonlinearity in a plasma filled rectangular waveguide

Sobhani

Sabouhi

Feili

et al. 2017

Plasma Sci. Technol.

View full text Add to dashboard Cite

Here a new scheme for mode filtering is proposed. Based on the ponderomotive force effect, propagation of the microwave dual-mode through a plasma-filled metallic rectangular waveguide is investigated. To excite the TE 20 mode in a rectangular waveguide, the existence of fundamental modes is unavoidable. To filter the destructive mode (TE 10), the waveguide is filled with a collisional plasma. Based on the coupling effect, the energy of this destructive TE 10 mode is transferred to the TE 20 mode. The proposed structure acts like a mode convertor. The TE 10 mode become more attenuated and instead the TE 20 mode is amplified. The plasma filled rectangular waveguide acts as a mode filtering tool.

show abstract

Creation of tunable longitudinally polarized terahertz pulse carrying orbital angular momentum

Sobhani

2021

Physics Letters A

View full text Add to dashboard Cite

Impact of nonlinear absorption on propagation of microwave in a plasma filled rectangular waveguide

Cited by 14 publications

References 20 publications

Effective factors on twisted terahertz radiation generation in a rippled plasma

Effective factors on twisted terahertz radiation generation in a rippled plasma

Mode filtering based on ponderomotive force nonlinearity in a plasma filled rectangular waveguide

Creation of tunable longitudinally polarized terahertz pulse carrying orbital angular momentum

Contact Info

Product

Resources

About