Study of the population inversion mechanisms and superradiance on ion transitions of molecular nitrogen in the filament

N. G. Ivanov, V. F. Losev, V. E. Prokop'Ev

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

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.

Original languageEnglish
Title of host publicationInternational Conference on Atomic and Molecular Pulsed Lasers XII
PublisherSPIE
Volume9810
ISBN (Electronic)9781510600515
DOIs
Publication statusPublished - 2015
EventInternational Conference on Atomic and Molecular Pulsed Lasers XII - Tomsk, Russian Federation
Duration: 13 Sep 201518 Sep 2015

Conference

ConferenceInternational Conference on Atomic and Molecular Pulsed Lasers XII
CountryRussian Federation
CityTomsk
Period13.9.1518.9.15

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ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Ivanov, N. G., Losev, V. F., & Prokop'Ev, V. E. (2015). Study of the population inversion mechanisms and superradiance on ion transitions of molecular nitrogen in the filament. In International Conference on Atomic and Molecular Pulsed Lasers XII (Vol. 9810). [98100L] SPIE. https://doi.org/10.1117/12.2228587