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Title: Supercontinuum emission and enhanced self-guiding of infrared femtosecond filaments sustained by third-harmonic generation in air

Abstract

The long-range propagation of two-colored femtosecond filaments produced by an infrared (IR) ultrashort pulse exciting third harmonics (TH) in the atmosphere is investigated, both theoretically and experimentally. First, it is shown that the coupling between the pump and TH components is responsible for a wide spectral broadening, extending from ultraviolet (UV) wavelengths (220 nm) to the mid-IR (4.5 {mu}m). Supercontinuum generation takes place continuously as the laser beam propagates, while TH emission occurs with a conversion efficiency as high as 0.5%. Second, the TH pulse is proven to stabilize the IR filament like a saturable quintic nonlinearity through four-wave mixing and cross-phase modulation. Third, the filamentation is accompanied by a conical emission of the beam, which becomes enlarged at UV wavelengths. These properties are revealed by numerical simulations and direct experimental observations performed from the Teramobile laser facility.

Authors:
 [1];  [1]; ; ; ; ; ;  [2]
  1. Departement de Physique Theorique et Appliquee, CEA/DAM Ile de France, Boite Postale 12, 91680 Bruyeres-le-Chatel (France)
  2. Laboratoire de Spectrometrie Ionique et Moleculaire, Universite Claude Bernard Lyon 1, UMR-CNRS 5579, F-69622 Villeurbanne cedex, Lyon (France)
Publication Date:
OSTI Identifier:
20641362
Resource Type:
Journal Article
Journal Name:
Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Additional Journal Information:
Journal Volume: 71; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevE.71.016602; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-651X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AIR; ATMOSPHERES; CONVERSION; EFFICIENCY; FILAMENTS; HARMONIC GENERATION; HARMONICS; INFRARED SPECTRA; LASERS; LIGHT TRANSMISSION; LINE BROADENING; MODULATION; NONLINEAR PROBLEMS; PULSES; SIMULATION; ULTRAVIOLET RADIATION; ULTRAVIOLET SPECTRA; VELOCITY; VISIBLE SPECTRA; WAVELENGTHS

Citation Formats

Berge, L, Skupin, S, Institute for Condensed Matter Theory and Solid State Optics, Friedrich-Schiller-Universitaet Jena, Max-Wien-Platz 1, 07743 Jena, Mejean, G, Kasparian, J, Yu, J, Frey, S, Salmon, E, and Wolf, J P. Supercontinuum emission and enhanced self-guiding of infrared femtosecond filaments sustained by third-harmonic generation in air. United States: N. p., 2005. Web. doi:10.1103/PhysRevE.71.016602.
Berge, L, Skupin, S, Institute for Condensed Matter Theory and Solid State Optics, Friedrich-Schiller-Universitaet Jena, Max-Wien-Platz 1, 07743 Jena, Mejean, G, Kasparian, J, Yu, J, Frey, S, Salmon, E, & Wolf, J P. Supercontinuum emission and enhanced self-guiding of infrared femtosecond filaments sustained by third-harmonic generation in air. United States. https://doi.org/10.1103/PhysRevE.71.016602
Berge, L, Skupin, S, Institute for Condensed Matter Theory and Solid State Optics, Friedrich-Schiller-Universitaet Jena, Max-Wien-Platz 1, 07743 Jena, Mejean, G, Kasparian, J, Yu, J, Frey, S, Salmon, E, and Wolf, J P. Sat . "Supercontinuum emission and enhanced self-guiding of infrared femtosecond filaments sustained by third-harmonic generation in air". United States. https://doi.org/10.1103/PhysRevE.71.016602.
@article{osti_20641362,
title = {Supercontinuum emission and enhanced self-guiding of infrared femtosecond filaments sustained by third-harmonic generation in air},
author = {Berge, L and Skupin, S and Institute for Condensed Matter Theory and Solid State Optics, Friedrich-Schiller-Universitaet Jena, Max-Wien-Platz 1, 07743 Jena and Mejean, G and Kasparian, J and Yu, J and Frey, S and Salmon, E and Wolf, J P},
abstractNote = {The long-range propagation of two-colored femtosecond filaments produced by an infrared (IR) ultrashort pulse exciting third harmonics (TH) in the atmosphere is investigated, both theoretically and experimentally. First, it is shown that the coupling between the pump and TH components is responsible for a wide spectral broadening, extending from ultraviolet (UV) wavelengths (220 nm) to the mid-IR (4.5 {mu}m). Supercontinuum generation takes place continuously as the laser beam propagates, while TH emission occurs with a conversion efficiency as high as 0.5%. Second, the TH pulse is proven to stabilize the IR filament like a saturable quintic nonlinearity through four-wave mixing and cross-phase modulation. Third, the filamentation is accompanied by a conical emission of the beam, which becomes enlarged at UV wavelengths. These properties are revealed by numerical simulations and direct experimental observations performed from the Teramobile laser facility.},
doi = {10.1103/PhysRevE.71.016602},
url = {https://www.osti.gov/biblio/20641362}, journal = {Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics},
issn = {1063-651X},
number = 1,
volume = 71,
place = {United States},
year = {2005},
month = {1}
}