This article is cited in 3 papers

International Scientific and Technical Conference "Ultrafast Optical Phenomena". October 4-8, 2021, Moscow
Laser physics and laser optics

Cavity-free lasing from molecular nitrogen ions in air laser plasma

I. A. Zyatikov, V. F. Losev

Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, Tomsk

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.

Keywords: lasing, laser plasma, molecular nitrogen ions, pulse time profile, spectrum.

Received: 20.12.2021
Revised: 20.12.2021
Accepted: 30.12.2021

DOI: 10.21883/OS.2022.04.52264.63-21

 English version: Optics and Spectroscopy, 2022, 130:2, 130–135

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