Transient gain from N2+ in light filaments

Ladan Arissian, Brian Kamer, Ali Rastegari, D. M. Villeneuve, Jean-Claude Diels
2018 Physical Review A  
We perform high resolution spectroscopy of N_2^+ emission in light filaments using a controlled pump at 795 followed by a second harmonic weak probe. Our result suggests that transient gain is achieved by resonant stimulated Raman scattering.
doi:10.1103/physreva.98.053438 fatcat:43mddlrdj5cpfgfvs6v23p6o74