Abbreviated Journal Title
Appl. Phys. Lett.
FEMTOSECOND LASER-PULSES; BESSEL BEAMS; PLASMA CHANNELS; AIR; GENERATION; DIFFRACTION; AXICON; LIGHT; Physics, Applied
The shaping of laser-induced filamenting plasma channels into helical structures by guiding the process with a non-diffracting beam is demonstrated. This was achieved using a Bessel beam superposition to control the phase of an ultrafast laser beam possessing intensities sufficient to induce Kerr effect driven non-linear self-focusing. Several experimental methods were used to characterize the resulting beams and confirm the observed structures are laser air filaments. (C) 2014 AIP Publishing LLC.
Applied Physics Letters
"Helical filaments" (2014). Faculty Bibliography 2010s. 5025.