This paper introduces and discusses the main aspects of ultrashort laser pulse filamentation
in various transparent media such as air (gases), transparent solids and liquids. The …

The state of the art of investigations on filamentation of a high-power femtosecond laser
radiation in transparent media is reviewed. The physical picture of this phenomenon is …

Modern laser sources nowadays deliver ultrashort light pulses reaching few cycles in
duration and peak powers exceeding several terawatt (TW). When such pulses propagate …

Spatial-and time-domain versions of the unidirectional pulse propagation equation (UPPE)
are derived and compared from the point of view of their practical application in simulations …

We investigated the spectral behavior of a white-light continuum generated in air by 2-TW
femtosecond laser pulses at 800 nm. The spectrum extends at least from 300 nm to 4.5 µ m …

It is shown, both theoretically and experimentally, that during laser pulse filamentation in air
an intense ultrashort third-harmonic pulse is generated forming a two-colored filament. The …

We present numerical results on the propagation of femtosecond pulses in air including
multiphoton ionization, group-velocity dispersion, space–time focusing, self-steepening …

We report experiments showing the breakup and the merging of filaments formed by the
modulational instability of femtosecond optical pulses in air. For input powers as high as 25 …

Laser ignition (LI) allows for precise manipulation of ignition timing and location and is
promising for green combustion of automobile and rocket engines and aero-turbines under …

We provide what is to our knowledge the first experimental evidence that multiple
filamentation (MF) of ultrashort pulses can be induced by input beam ellipticity. Unlike noise …