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Terahertz Anglular Distribution from Single-Color Filament Plasma at Various Laser Beam Numerical Apertures

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Abstract

The angular distributions of various spectral components of terahertz radiation generated by filament plasma are measured in a wide range of numerical apertures NA of the laser beam from 0.003 to 0.1. It is shown that propagation angles of terahertz radiation are inversely proportional to the square root of the terahertz frequency. It is shown that an increase in the numerical aperture of the laser beam leads to an increase in propagation angles of terahertz radiation in the entire range of observed frequencies.

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Funding

This study was supported by the Russian Foundation for Basic Research, project no. 20-02-00114.

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, 119991, Moscow, Russia

    G. E. Rizaev, D. V. Mokrousova, D. V. Pushkarev, L. V. Seleznev & A. A. Ionin

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  1. G. E. Rizaev
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  2. D. V. Mokrousova
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  3. D. V. Pushkarev
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  4. L. V. Seleznev
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  5. A. A. Ionin
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Correspondence to G. E. Rizaev.

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The authors declare that they have no conflicts of interest.

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Translated by A. Kazantsev

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Rizaev, G.E., Mokrousova, D.V., Pushkarev, D.V. et al. Terahertz Anglular Distribution from Single-Color Filament Plasma at Various Laser Beam Numerical Apertures. Bull. Lebedev Phys. Inst. 49, 191–194 (2022). https://doi.org/10.3103/S1068335622070065

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  • DOI: https://doi.org/10.3103/S1068335622070065

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