Advances in intense femtosecond laser filamentation in air

  title={Advances in intense femtosecond laser filamentation in air},
  author={See Leang Chin and Tiejun Wang and C Marceau and Jian Wu and Jiansheng Liu and Olga G. Kosareva and Nikolay A. Panov and Yong Chen and J. -F. Daigle and Shuai Yuan and Ali Azarm and Weiwei Liu and Tamar Seideman and Heping Zeng and Martin C. Richardson and Ruxin Li and Zhizhan Xu},
  journal={Laser Physics},
This is a review of some recent development in femtosecond filamentation science with emphasis on our collective work. Previously reviewed work in the field will not be discussed. We thus start with a very brief description of the fundamental physics of single filamentation of powerful femtosecond laser pulses in air. Intensity clamping is emphasized. One consequence is that the peak intensity inside one or more filaments would not increase significantly even if one focuses the pulse at very… Expand
Femtosecond laser filamentation with a microlens array in air
By performing numerical studies, we show that during the propagation of femtosecond laser pulses with a microlens array (MLA) in air, the overall nonlinear length of multiple filamentation (MF) withExpand
Lasing effect in femtosecond filaments in air
Femtosecond laser filamentation in air is a phenomenon that involves a rich family of nonlinear optic effects. Lasing effect from filaments has emerged as a new phenomenon in 2011. It has beenExpand
Spatio-temporal evolution scenarios of femtosecond laser pulse filamentation in fused silica
We investigated the evolution of femtosecond laser pulses at different wavelengths corresponding to normal, zero, and anomalous regimes of group velocity dispersion (GVD) in fused silica. The laserExpand
Mechanism of laser induced filamentation in dielectrics.
This work revisits intense femtosecond laser interaction with dielectric materials at 800nm under tight focusing via high resolution three dimensional simulations, where the complete set of Maxwell's equations is solved. Expand
Manipulation by multiple filamentation of subpicosecond TW KrF laser beam
A self-focusing of TW-level subpicosecond UV KrF laser pulses in ambient air produces a few 100 randomly distributed filaments over 100-m propagation distance. A control of multiple filamentationExpand
Effect of geometrical focusing on femtosecond laser filamentation with low pressure
Abstract The influence of geometrical focusing on the filamentation of femtosecond laser pulses at various low pressures (<1 atm) in air has been numerically demonstrated. The main peculiarities,Expand
Fusion of regularized femtosecond filaments in air: Far field on-axis emission
The fusion of several coherent 800 nm femtosecond filaments is induced experimentally and numerically by transmitting a beam through a mask with circular apertures followed by the focusing lens. TheExpand
Femtosecond laser filament guided negative coronas
We report on the experimental investigation of femtosecond laser filament guided negative coronas. When the coupling between the filament and negative corona was weak, the side fluorescence spectralExpand
Beam wandering of femtosecond laser filament in air.
With this result, one may be able to estimate quantitatively the displacement of a filament over long distance propagation and interpret the practical performance of the experiments assisted by femtosecond laser filamentation, such as remote air lasing, pulse compression, high order harmonic generation (HHG), etc. Expand
Transition from linear- to nonlinear-focusing regime in filamentation
An analytical method is proposed to determine the transition between a collimated and a strongly focused filament, and it is shown that it corresponds to an actual shift in the balance of physical mechanisms governing filamentation. Expand


Control of femtosecond filamentation by field-free revivals of molecular alignment
We show that the filamentation dynamics of a femtosecond laser probe pulse can be readily controlled by properly matching it to the quantum revivals of pre-aligned molecules prepared throughExpand
The propagation of powerful femtosecond laser pulses in optical media : physics, applications, and new challenges
When a powerful femtosecond laser pulse propagates in an optical medium, self-focusing occurs. Normally, it is the most powerful part (slice) of the pulse that self-focuses first during itsExpand
Spectroscopic analysis of femtosecond laser plasma filament in air
Abstract We report a spectroscopic analysis of a filament generated by a femtosecond laser pulse in air. In the filament spectra, the characteristic Stark broadened atomic oxygen triplet centered atExpand
Nonlinear X-wave formation by femtosecond filamentation in Kerr media.
The universal features of the X-wave patterns are discussed, among which the long arms in the far field that follow the linear dispersive properties of the medium and are accompanied by a strong modulated axial emission. Expand
Can we reach very high intensity in air with femtosecond PW laser pulses?
In the course of femtosecond pulse filamentation in atmospheric density gases, the peak intensity is always limited by optical-field-induced ionization. This intensity clamping phenomenon isExpand
Supercontinuum emission and enhanced self-guiding of infrared femtosecond filaments sustained by third-harmonic generation in air.
  • L. Bergé, S. Skupin, +5 authors J. Wolf
  • Physics, Medicine
  • Physical review. E, Statistical, nonlinear, and soft matter physics
  • 2005
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 andExpand
Controlling a bunch of multiple filaments by means of a beam diameter
We demonstrate a three orders of magnitude increase and stability in the backscattered fluorescence signal from nitrogen molecules by terawatt femtosecond laser pulse induced air filaments using aExpand
Few-cycle shock X-wave generation by filamentation in prealigned molecules
We investigate the evolution of an intense femtosecond laser pulse in prealigned molecules of nitrogen following impulsive rotational Raman excitation by a weak pump pulse. The spatiotemporal andExpand
Ultrashort filaments of light in weakly ionized, optically transparent media
Modern laser sources nowadays deliver ultrashort light pulses reaching few cycles in duration and peak powers exceeding several terawatt (TW). When such pulses propagate through optically transparentExpand
Generation of powerful filaments at a long distance using adaptive optics
Abstract Because of its extraordinary properties (intensity clamping, white light source, km long plasma channels), filamentation represents an ideal candidate for remote sensing. However, theExpand