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Effective factors on twisted terahertz radiation generation in a rippled plasma

Part of: PLA Ultra-high Field Physics with Lasers

Published online by Cambridge University Press:  16 January 2017

Hassan Sobhani Open the ORCID record for Hassan Sobhani [Opens in a new window] ,
Elham Dadar  and
Sahar Feili
Hassan Sobhani*
Affiliation:
Young Researchers and Elite Club, Qom Branch, Islamic Azad University, Qom, Iran
Elham Dadar
Affiliation:
Faculty of Economics, Mofid University of Qom, Qom, Iran
Sahar Feili
Affiliation:
Department of Physics, Shahid Bahonar University, Kerman, Iran
*
†Email address for correspondence: Hassan960sob@gmail.com
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Abstract

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.

Keywords

plasma applicationsplasma nonlinear phenomenaplasma waves
Type
Research Article
Information
Journal of Plasma Physics , Volume 83 , Issue 1 , February 2017 , 655830101
Copyright
© Cambridge University Press 2017 

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