15 December 2015 Study of the population inversion mechanisms and superradiance on ion transitions of molecular nitrogen in the filament
Author Affiliations +
Proceedings Volume 9810, International Conference on Atomic and Molecular Pulsed Lasers XII; 98100L (2015) https://doi.org/10.1117/12.2228587
Event: XII International Conference on Atomic and Molecular Pulsed Lasers, 2015, Tomsk, Russian Federation
Abstract
The experimental results of the inversion population mechanisms study in the resonant electronic transition B3Πg–A3Σu+ of nitrogen ions by optically pumped of air and pure nitrogen by femtosecond laser pulse at a wavelength of 950 nm are presented. It is shown that the inversion results from selective settling of N2+(B2Σu+, v' =0) excited state by multiphoton excitation of the autoionization states of the nitrogen molecule with energy of 18.7 eV. Seed photon for superradiance at transitions of molecular nitrogen ions are photons the axial supercontinuum occurring in the filament on the respective wavelengths. The mode of the superradiance at a wavelength λ = 358.4 nm referred to the transition of the CN molecules was realized.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
N. G. Ivanov, N. G. Ivanov, V. F. Losev, V. F. Losev, V. E. Prokop'ev, V. E. Prokop'ev, } "Study of the population inversion mechanisms and superradiance on ion transitions of molecular nitrogen in the filament", Proc. SPIE 9810, International Conference on Atomic and Molecular Pulsed Lasers XII, 98100L (15 December 2015); doi: 10.1117/12.2228587; https://doi.org/10.1117/12.2228587
PROCEEDINGS
6 PAGES


SHARE
Back to Top