Filamentation of beam-shaped femtosecond laser pulses

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

When ultra-intense and ultra-short optical pulses propagate in transparent dielectrics, the dynamic balance between multiple linear and nonlinear effects results in the generation of laser filaments. These peculiar objects have numerous interesting properties and can be potentially used in a variety of applications from remote sensing to the optical pulse compression down to few optical cycles to guiding lightning discharges away from sensitive sites. Materializing this practical potential is not straightforward owing to the complexity of the physical picture of filamentation. In this paper, we discuss recent experiments on using beam shaping as a means of control over the filament formation and dynamics. Two particular beam shapes that we have investigated so far are Bessel and Airy beams. The diffraction-free propagation of femtosecond Bessel beams allows for the creation of extended plasma channels in air. These extended filaments can be used for the generation of energetic optical pulses with the duration in the few-cycle range. In the case of filamentation of femtosecond Airy beams, the self-bending property of these beams allows for the creation of curved filaments. This is a new regime of the intense laser-pulse propagation in which the linear self-bending property of the beam competes against the nonlinear self-channeling. The bent filaments generated by ultraintense Airy beams emit forward-propagating broadband radiation. Analysis of the spatial and spectral distribution of this emission provides for a valuable tool for analyzing the evolution of the ultra-intense optical pulse along the optical path.

Original languageEnglish (US)
Title of host publicationAIP Conference Proceedings
Pages416-425
Number of pages10
Volume1278
DOIs
StatePublished - 2010
EventInternational High Power Laser Ablation Symposium, HPLA 2010 - Santa Fe, NM, United States
Duration: Apr 18 2010Apr 22 2010

Other

OtherInternational High Power Laser Ablation Symposium, HPLA 2010
CountryUnited States
CitySanta Fe, NM
Period4/18/104/22/10

Fingerprint

filaments
pulses
lasers
cycles
propagation
pulse compression
lightning
optical paths
remote sensing
spatial distribution
broadband
air
radiation
diffraction

Keywords

  • Airy beams
  • Atmospheric propagation
  • Bessel beams
  • Filamentation
  • Nonlinear optics at extreme intensities
  • Plasma channels

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Filamentation of beam-shaped femtosecond laser pulses. / Polynkin, Pavel G; Kolesik, Miroslav; Moloney, Jerome V.

AIP Conference Proceedings. Vol. 1278 2010. p. 416-425.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Polynkin, PG, Kolesik, M & Moloney, JV 2010, Filamentation of beam-shaped femtosecond laser pulses. in AIP Conference Proceedings. vol. 1278, pp. 416-425, International High Power Laser Ablation Symposium, HPLA 2010, Santa Fe, NM, United States, 4/18/10. https://doi.org/10.1063/1.3507130
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