Triggering filamentation using turbulence

Eeltink, Debbie; Berti, Nicolas; Marchiando, Nadège; Hermelin, Sylvain; Gateau, Julien; Brunetti, Maura; Wolf, Jean‐Pierre; Kasparian, Jérôme

doi:10.1103/physreva.94.033806

Cited by 8 publications

(2 citation statements)

References 27 publications

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“…As a consequence, most of the studies concluded that the wandering of filaments is similar to that of a Gaussian beam (La Fontaine et al 1999, Chin et al 2002, Fujimoto et al 2002, Salame et al 2007, Ma et al 2008, Silaeva et al 2010. On the other hand, filaments are surprisingly robust in air turbulence once they are formed, their onset may be shifted and new filaments can even be nucleated by the modulated refractive index within turbulent cells (Kandidov et al 1999, Ackermann et al 2006b, Salame et al 2007, Houard et al 2008, Paunescu et al 2009, Eeltink et al 2016.…”

Section: Long Distance Filament Propagation and Atmospheric Turbulencementioning

confidence: 99%

Short-pulse lasers for weather control

Wolf

2017

Rep. Prog. Phys.

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Filamentation of ultra-short TW-class lasers recently opened new perspectives in atmospheric research. Laser filaments are self-sustained light structures of 0.1-1 mm in diameter, spanning over hundreds of meters in length, and producing a low density plasma (10-10 cm) along their path. They stem from the dynamic balance between Kerr self-focusing and defocusing by the self-generated plasma and/or non-linear polarization saturation. While non-linearly propagating in air, these filamentary structures produce a coherent supercontinuum (from 230 nm to 4 µm, for a 800 nm laser wavelength) by self-phase modulation (SPM), which can be used for remote 3D-monitoring of atmospheric components by Lidar (Light Detection and Ranging). However, due to their high intensity (10-10 W cm), they also modify the chemical composition of the air via photo-ionization and photo-dissociation of the molecules and aerosols present in the laser path. These unique properties were recently exploited for investigating the capability of modulating some key atmospheric processes, like lightning from thunderclouds, water vapor condensation, fog formation and dissipation, and light scattering (albedo) from high altitude clouds for radiative forcing management. Here we review recent spectacular advances in this context, achieved both in the laboratory and in the field, reveal their underlying mechanisms, and discuss the applicability of using these new non-linear photonic catalysts for real scale weather control.

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Section: Long Distance Filament Propagation and Atmospheric Turbulencementioning

confidence: 99%

Short-pulse lasers for weather control

Wolf

2017

Rep. Prog. Phys.

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“…Wave-front distortions are also expected to perturb the dynamic balance between Kerr self-focusing and plasma defocusing in the filaments. Experimental and theoretical studies were devoted to the influence of air turbulence on filament distance [12,13], filament survival rate [14,15], transverse filament wandering [16,17], filament spectral characteristics [18], optical pulse broadening [19], the enhancement of multifilament generation and filament-induced fluorescence [20,21], triggering filamentation using turbulence [22], and beam shaping that suppresses turbulence [23]. Trivial changes in filamentation have a great impact on sensitivity during remote sensing.…”

Section: Introductionmentioning

confidence: 99%

Beam Wander Restrained by Nonlinearity of Femtosecond Laser Filament in Air

Guo

Sun

Liu

et al. 2022

Sensors

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The filamentation process under atmospheric turbulence is critical to its remote-sensing application. The effects of turbulence intensity and location on the spatial distribution of femtosecond laser filaments in the air were studied. The experimental results show that the nonlinear effect of the filament can restrain the beam wander. When the turbulence intensity was 3.31×10−13 cm−2/3, the mean deviation of the wander of the filament center was only 27% of that of the linear transmitted beam. The change in turbulence location would lead to a change in the standard deviation of the beam centroid drift. Results also show that the filament length would be shortened, and that the filament would end up earlier in a turbulent environment. Since the filamentation-based LIDAR has been highly expected as an evolution multitrace pollutant remote-sensing technique, the study promotes our understanding of how turbulence influences filamentation and advances atmospheric remote sensing by applying a filament.

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