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Terahertz radiation generation driven by beating of chirped laser pulses in single-walled carbon nanotubes by applying tapered magnetic field

  • Regular Article – Optical Phenomena and Photonics
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Abstract

In this study, the terahertz (THz) radiation generation from beating of two chirped lasers in the carbon nanotubes is investigated in the presence of an external tapered magnetic field. The electric field of chirped laser beams interacts with the carbon nanotubes, leads to the ionization of the carbon atoms, and produces a plasma medium. Then, the interaction of the laser beams with the electronic clouds of plasma generates ponderomotive force that leads to the creation of a macroscopic electron current at the beat frequency which can generate THz radiation. Each nanotube acts as an oscillating electrical dipole and produces terahertz radiation. The results indicated that in the presence of a tapered magnetic field, the THz radiation power can be tuned, and in this case, more THz power is generated than a uniform magnetic field. It was also found that the THz power is produced at \(\omega_{T} = \frac{{\omega_{P} }}{\sqrt 2 },\) when the beat frequency is equal to the surface plasmon resonance. Moreover, the radius and length of carbon nanotubes have significant effects on the terahertz power, so that with increasing these values, terahertz power increases.

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Data Availability Statement

This manuscript has associated data in a data repository. [Authors' comment: The data that supports the findings of this study are available within the article].

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Authors and Affiliations

  1. Department of Physics, University of Guilan, Rasht, 41335-1914, Iran

    Z. Ghayemmoniri, R. Nemati Siahmazgi & S. Jafari

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  1. Z. Ghayemmoniri
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  2. R. Nemati Siahmazgi
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  3. S. Jafari
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Contributions

RNS. and S.J. came up with the basic idea behind this work. ZG. and RNS. carried out the calculations. ZG. did numerical simulations and plotted the graphs. SJ. and RNS. carried out result confirmation and discussion. All authors reviewed the manuscript.

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Correspondence to R. Nemati Siahmazgi or S. Jafari.

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Ghayemmoniri, Z., Siahmazgi, R.N. & Jafari, S. Terahertz radiation generation driven by beating of chirped laser pulses in single-walled carbon nanotubes by applying tapered magnetic field. Eur. Phys. J. D 77, 48 (2023). https://doi.org/10.1140/epjd/s10053-023-00612-w

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