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

doi:10.1117/12.2228587

15 December 2015 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

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 B³Π_g–A³Σ_u⁺ 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⁺(B²Σ_u⁺, 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.

Citation Download Citation

N. G. Ivanov, V. F. Losev, and 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); https://doi.org/10.1117/12.2228587

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available