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7 June 2017 Air lasing through femtosecond filamentation (Conference Presentation)
Pavel Polynkin
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Proceedings Volume 10193, Ultrafast Bandgap Photonics II; 101930O (2017) https://doi.org/10.1117/12.2263264
Event: SPIE Defense + Security, 2017, Anaheim, CA, United States
Abstract
Air lasing is a concept that is based on the utilization of the constituents of air as a gain medium in a standoff, impulsive, laser-like optical source. While both forward-propagating and backward-propagating laser emissions could be generated, the backward-propagating emission is of the most practical significance for its potential to enable single-ended remote sensing schemes. I will review recent results on air lasing from singly ionized nitrogen molecular ions N2+, pumped through femtosecond laser filamentation in air. So far, lasing has been demonstrated only in the forward direction, and the mechanisms that enable population inversion have been highly controversial.
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Pavel Polynkin "Air lasing through femtosecond filamentation (Conference Presentation)", Proc. SPIE 10193, Ultrafast Bandgap Photonics II, 101930O (7 June 2017); https://doi.org/10.1117/12.2263264
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KEYWORDS
Femtosecond phenomena
Laser optics
Ions
Molecular lasers
Nitrogen
Remote sensing
Current controlled current source
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