Studies on the generation of optical gain in the constituents of air are motivated by potential applications in air lasing [1], a concept, the realization of which would enable efficient single-ended remote sensing in the atmosphere. Various schemes of turning air into an active laser medium are being investigated [2-4]. One of the most promising approaches is based on pumping atmospheric nitrogen by ultra-intense femtosecond laser pulses propagating in the filamentation regime in air [5]. It has been suggested that air filamentation may result in the optical gain on the electronic transitions of N2+ at 391 nm and 428 nm emission wavelengths [6]. However, the gain mechanism responsible for those emissions has been controversial.

© 2017 IEEE

PDF Article
More Like This
Rotational Mechanism of Lasing in Singly Ionized Nitrogen Molecules under Femtosecond mid-IR Pumping

Ali Azarm, Paul Corkum, and Pavel Polynkin
JTh4B.9 CLEO: Applications and Technology (CLEO_AT) 2016

Optical Lasing during Laser Filamentation in the Nitrogen Molecular Ion: Ro-Vibrational Inversion

Maria Richter, Felipe Morales, Michael Spanner, Olga Smirnova, and Misha Ivanov
CG_P_15 The European Conference on Lasers and Electro-Optics (CLEO_Europe) 2017

Remotely Pumped Stimulated Emission at 337 nm in Atmospheric Nitrogen

P. Polynkin, D. Kartashov, A. Schmitt-Sody, S. Alisauskas, A. Pugzlys, A. Baltuska, J. Moloney, and W. Roach
CFIE_6_2 International Quantum Electronics Conference (IQEC) 2013


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription