A. Azarm

TL;DR: A review of femtosecond filamentation can be found in this paper with emphasis on the collective work of filamentation nonlinear optics, which is a new hot subject of current debate.

TL;DR: In this paper, the visible and near-UV fluorescence spectroscopy of air generated inside a femtosecond laser plasma filament was studied, and the primary reactions, N 2 + + N 2 ⇒ N 4 + ; N 4+ + e ⇒ n 2 (C 3 Π u ) + n 2, populates the electronic excited state N2(C3Пu) of N2.

TL;DR: In this article, the authors present an overview of the recent progress in their laboratory concerning the remote sensing of chemical and biological agents/pollutants in air using filamentation-induced nonlinear fluorescence techniques.

TL;DR: In this paper, the authors demonstrated the feasibility of remote detection and differentiation of some very similar agricultural-activity related bioaerosols, namely barley, corn, and wheat grain dusts, through nonlinear fluorescence of fragments induced by the high-intensity inside filaments of femtosecond laser pulses in air.

TL;DR: In this paper, the rotational population distributions in the upper and lower emission levels were quantified through high-resolution spectroscopy of these emissions, and it was shown that these distributions are shifted with respect to each other, which has a strong influence on the transient optical gain.