40 citations · 56 across the 4 of their papers we have counts for
4 papers
UV filaments
Ali Rastegari, Alejandro Aceves, Jean-Claude Diels
This chapter starts with a discussion of the main qualitative differences between UV and mid-IR filaments: from multiphoton ionization in the UV to tunnel ionization in the near- t…
Measurement of delayed fluorescence in N2+ with streak camera
Ali Rastegari, Jean-Claude Diels, Lee R. Liu +1
Using a streak camera, we directly measure time- and space-resolved dynamics of N2+ emission from a self-seeded filament. We observe characteristic signatures of superfluorescence…
Transient gain from in light filaments
Ladan Arissian, Brian Kamer, Ali Rastegari +1
We perform high resolution spectroscopy of emission in light filaments using a controlled pump at 795 followed by a second harmonic weak probe. Our result suggests that tra…
HV discharge acceleration by sequences of UV laser filaments with visible and near-infrared pulses
Elise Schubert, Ali Rastegari, Chengyong Feng +6
We investigate the triggering and guiding of DC high-voltage discharges over a distance of 37 cm by filaments produced by ultraviolet (266 nm) laser pulses of 200 ps duration. The…