Helical filaments

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 ef...

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Bibliographic Details
Published in:Applied physics letters 2014-06, Vol.104 (26)
Main Authors: Barbieri, Nicholas, Hosseinimakarem, Zahra, Lim, Khan, Durand, Magali, Baudelet, Matthieu, Johnson, Eric, Richardson, Martin
Format: Article
Language:English
Subjects:
Applied physics
BEAMS
BESSEL FUNCTIONS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
FILAMENTS
FOCUSING
HELICAL CONFIGURATION
KERR EFFECT
Laser beams
LASER RADIATION
Lasers
NONLINEAR PROBLEMS
PLASMA FILAMENT
Superposition (mathematics)
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Summary: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.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4886960