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year 27, Issue 2 (ICOP & ICPET 2021 2021)
ICOP & ICPET _ INPC _ ICOFS 2021, 27(2): 80-83 |
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Nemati Siahmazgi R, Jafari S. Terahertz radiation via beating Gaussian laser beams and nanocluster plasma. ICOP & ICPET _ INPC _ ICOFS 2021; 27 (2) :80-83
URL: http://opsi.ir/article-1-2311-en.html
URL: http://opsi.ir/article-1-2311-en.html
1- Department of Physics, University of Guilan
Abstract: (992 Views)
In this paper, generation of terahertz (THz) radiation by the beating of two super- Gaussian laser beams in a nanocluster plasma is investigated, theoretically. The electric field of laser beams interact with the nanocluster, leads to the ionization of the cluster atoms, and producing nanoplasma. Interaction of laser beams with the electronic clouds of nanoplasma generates ponderomotive force that leads to the creation of a macroscopic electron current at the beat frequency which can generate THz radiation. The THz wave equations and THz efficiency are analytically derived in nanocluster plasma medium. The effects of the density and radius of nanoclusters, the laser beam width and intensity of super- Gaussian lasers on the THz radiation efficiency has been investigated in a nanoplasma- based THz emitter. The results indicated the maximum value of the field amplitude for THz radiation is the near the frequency of f~13.57 THz, that is, when the beat- wave frequency approaches the effective plasmon frequencies of the nanoplasma.
Keywords: Generation of Terahertz radiation, Nanoplasma, Nanocluster, Electrostatic energy channel, Efficiency of THz radiation.
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