Abstract—The paper presents the results of a study of the temporal and spectral characteristics of lasing at \({{B}^{2}}\Sigma _{u}^{ + }{-} {{X}^{2}}\Sigma _{g}^{ + }\) transition of molecular nitrogen ions in laser plasma created by a radiation pulse with central wavelength of 950 nm, duration of 60 fs and energy of 10 mJ. The parameters of the active medium are analyzed and a possible mechanism for the formation of picosecond duration of the radiation pulse is discussed.
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The study was carried out with the financial support of the Russian Foundation for Basic Research grant no. 20-08-00060, the Russian Foundation for Basic Research and Tomsk Region grant no. 19-48-700016 and state assignment FWRM-2021-0014.
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Zyatikov, I.A., Losev, V.F. Cavity-Free Lasing from Molecular Nitrogen Ions in Air Laser Plasma. Opt. Spectrosc. 130, 130–135 (2022). https://doi.org/10.1134/S0030400X22010210
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DOI: https://doi.org/10.1134/S0030400X22010210