6533b859fe1ef96bd12b785a
RESEARCH PRODUCT
Higher-order Kerr terms allow ionization-free filamentation in gases.
Bruno LavorelOlivier FaucherJérôme KasparianPierre BéjotPierre BéjotEdouard HertzStefano HeninVincent LoriotJean-pierre WolfT. Vieillardsubject
Kerr effectGeneral Physics and Astronomychemistry.chemical_elementFOS: Physical sciencesPhysics::Opticsddc:500.201 natural sciences010309 opticsOpticsFilamentationPhysics::Plasma PhysicsIonization0103 physical sciences010306 general physicsSelf-phase modulationPhysicsArgonbusiness.industryOrder (ring theory)Self-focusingPlasmachemistryAtomic physicsbusinessOptics (physics.optics)Physics - Opticsdescription
We show that higher-order nonlinear indices ($n_4$, $n_6$, $n_8$, $n_{10}$) provide the main defocusing contribution to self-channeling of ultrashort laser pulses in air and Argon at 800 nm, in contrast with the previously accepted mechanism of filamentation where plasma was considered as the dominant defocusing process. Their consideration allows to reproduce experimentally observed intensities and plasma densities in self-guided filaments.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-11-06 | Physical review letters |