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Article Dans Une Revue Optics Letters Année : 2024

Laguerre–Gaussian laser filamentation for the control of electric discharges in air

Résumé

We study the use of Laguerre–Gaussian (LG) femtosecond laser filament with multi GW peak power to guide electric sparks in the atmosphere. We demonstrate that an LG beam with a vortex phase or with 6 azimuthal phase steps generates a filamentation regime, where a longer and more uniform energy deposition is produced compared to a normal beam with a flat phase. Such filaments can guide electric discharges over much longer distances. This technique could significantly extend the guiding range of laser filaments for lightning control and other long-range atmospheric experiments involving filamentation.
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Dates et versions

hal-04616090 , version 1 (18-06-2024)

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Silin Fu, Leonid Arantchouk, Magali Lozano, André Mysyrowicz, Arnaud Couairon, et al.. Laguerre–Gaussian laser filamentation for the control of electric discharges in air. Optics Letters, 2024, 49 (13), pp.3540. ⟨10.1364/OL.522594⟩. ⟨hal-04616090⟩
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