%0 Journal Article %T Postfilament supercontinuum on 100 m path in air %+ Lomonosov Moscow State University (MSU) %+ P. N. Lebedev Physical Institute of the Russian Academy of Sciences [Moscow] (LPI RAS) %+ Centre de Physique Théorique [Palaiseau] (CPHT) %+ Interaction Laser-Matière (ILM) %+ Department of Physics %+ Centre d'Optique, Photonique et Laser (COPL) %A Kosareva, Olga %A Panov, Nikolay %A Shipilo, Daniil %A Mokrousova, Daria %A Nikolaeva, Irina %A Mitina, Ekaterina %A Koribut, Andrew %A Reutov, Aleksei %A Rizaev, Georgy %A Couairon, Arnaud %A Houard, Aurélien %A Skryabin, Dmitry %A Saletsky, Alexander %A Savelev, Andrei %A Seleznev, Leonid %A Ionin, Andrey %A Chin, See Leang %Z Russian Foundation for Basic Research (18-02- 00954); Foundation for the Advancement of Theoretical Physics and Mathematics (20-2-1-47-1). %< avec comité de lecture %@ 0146-9592 %J Optics Letters %I Optical Society of America - OSA Publishing %V 46 %N 5 %P 1125 %8 2021-02-22 %D 2021 %R 10.1364/OL.416224 %K Laser femtosecond %K Nonlinear optics %K Filamentation %K Ultrafast Optics %Z Physics [physics]/Physics [physics]/Optics [physics.optics]Journal articles %X Pulses at 744 nm with 90 fs duration, 6 mJ energy, and a weakly divergent wavefront propagate for more than 100 m and generate a filament followed by an unprecedently long high intensity (≥1TW/cm2) light channel. Over a 20 m long sub-section of this channel, the pulse energy is transferred continuously to the infrared wing, forming spectral humps that extend up to 850 nm. From 3D+time carrier-resolved simulations of 100 m pulse propagation, we show that spectral humps indicate the formation of a train of femtosecond pulses appearing at a predictable position in the propagation path. %G English %2 https://hal-ensta-paris.archives-ouvertes.fr/hal-03151353/document %2 https://hal-ensta-paris.archives-ouvertes.fr/hal-03151353/file/OL_kosareva_416224.pdf %L hal-03151353 %U https://hal-ensta-paris.archives-ouvertes.fr/hal-03151353 %~ X %~ ENSTA %~ CNRS %~ X-CPHT %~ X-LOA %~ X-DEP %~ X-DEP-PHYS %~ ENSTA_LOA %~ IP_PARIS %~ IP_PARIS_COPIE