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Abstract <p>We propose and experimentally demonstrate the possibility of efficient lasing at the C<sup>3</sup>Π<sub>u</sub>–B<sup>3</sup>Π<sub>g</sub> transition of the N<sub>2</sub> molecule in the afterglow of a high-pressure Ar–N<sub>2</sub>–He mixture excited by an electron beam with an average electron energy ε<sub><i>e</i></sub> ≈ 300 keV, an average current density <i>j</i>&#xa0;≈ 30 A/cm<sup>2</sup>, and a FWHM duration τ ≈ 100 ns. With a laser pulse duration of ∼110 ns, the laser energy is ∼65 mJ.</p>

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Ultraviolet Afterglow Lasing in an Ar–N2–He Mixture

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • G. N. Lelyavskii,
  • V. D. Zvorykin,
  • L. I. Karmazin,
  • I. G. Rudoy,
  • A. M. Soroka,
  • N. N. Ustinovskii,
  • A. V. Shutov

摘要

Abstract

We propose and experimentally demonstrate the possibility of efficient lasing at the C3Πu–B3Πg transition of the N2 molecule in the afterglow of a high-pressure Ar–N2–He mixture excited by an electron beam with an average electron energy εe ≈ 300 keV, an average current density j ≈ 30 A/cm2, and a FWHM duration τ ≈ 100 ns. With a laser pulse duration of ∼110 ns, the laser energy is ∼65 mJ.