| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Terahertz radiation generation by beating of two chirped laser pulses in a warm collisional magnetized plasma |
| Motahareh Arefnia1,2, Mehdi Sharifian2,†, and Mohammad Ghorbanalilu1 |
1 Department of Physics, Shahid Beheshti University, 1983963113, Tehran, Iran;
2 Physics Department, Yazd University, Safaiyeh, Yazd, Iran |
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Abstract Analytical equations of terahertz (THz) radiation generation based on beating of two laser beams in a warm collisional magnetized plasma with a ripple density profile are developed. In this regard, the effects of frequency chirp on the field amplitude of the terahertz radiation as well as the temperature and collision parameters are investigated. The ponderomotive force is generated in the frequency chirp of beams. Resonant excitation depends on tuning of the plasma beat frequency, magnetic field frequency, thermal velocity, collisional frequency, and effect of the frequency chirp with the plasma density. For optimum parameters of frequency and temperature the maximum THz amplitude is obtained.
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Received: 17 December 2020
Revised: 22 February 2021
Accepted manuscript online: 26 April 2021
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PACS:
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41.75.Jv
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(Laser-driven acceleration?)
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42.25.Bs
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(Wave propagation, transmission and absorption)
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52.25.Xz
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(Magnetized plasmas)
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94.20.Fg
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(Plasma temperature and density)
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Corresponding Authors:
Mehdi Sharifian
E-mail: mehdi.sharifian@yazd.ac.ir
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Cite this article:
Motahareh Arefnia, Mehdi Sharifian, and Mohammad Ghorbanalilu Terahertz radiation generation by beating of two chirped laser pulses in a warm collisional magnetized plasma 2021 Chin. Phys. B 30 094101
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