Third Harmonic X-waves Generation by Filamentation of Infrared Femtosecond Laser Pulses in Air

  • Han Xu
  • , Hui Xiong
  • , See Leang Chin
  • , Ya Cheng*
  • , Zhizhan Xu
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

We report the first measurement of the hyperbolic featured angularly resolved spectra of the X-shaped third harmonic generated in infrared femtosecond pulses pumped filament in air. We show that at low pump intensity, phase matching between the fundamental and third harmonic waves dominates the nonlinear optical effect and induces a ring structure of the third harmonic beam; whereas at high pump intensity, the dispersion properties of air begins to affect the angular spectrum, leading to the formation of nonlinear X-wave at third harmonic.

Original languageEnglish
Title of host publicationSpringer Series in Chemical Physics
PublisherSpringer Science and Business Media Deutschland GmbH
Pages822-824
Number of pages3
DOIs
StatePublished - 2009
Externally publishedYes

Publication series

NameSpringer Series in Chemical Physics
Volume92
ISSN (Print)0172-6218

Keywords

  • Angular Spectrum
  • Nonlinear Optical Effect
  • Pump Pulse
  • Pump Wave
  • Single Pulse Energy

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