Characterisation and control of white-light supercontinuum filaments in condensed media - Application to remote sensing

Kevin Cook, Ajoy K. Kar, Robert A. Lamb

Research output: Contribution to journalArticle

Abstract

The fundamental characteristics of supercontinuum filament formation in condensed media are investigated along with several novel techniques for controlling their normally random distribution pattern. The utilisation of these supercontinuum filaments as light sources in remote sensing experiments is also discussed. In the first experiments a longitudinal imaging technique is used to scan through the filament and generate a plot of the intensity profile. From this profile an accurate measurement for the filament length and waist may be obtained. Using a similar set-up, the remarkably stable phase relationship is demonstrated between neighbouring filaments and the consequent interference pattern recorded. The second investigations present techniques for controlling both the radial distribution of filaments and the distance at which they form on the axis of propagation.

Original languageEnglish
Article number598406
JournalProceedings of SPIE - the International Society for Optical Engineering
Volume5984
DOIs
Publication statusPublished - 2005
EventLidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing - Bruges, Belgium
Duration: 19 Sep 200520 Sep 2005

Keywords

  • Diffraction
  • Femtosecond
  • Filament
  • Laser
  • Optical Kerr effect
  • Remote sensing
  • Self-focusing
  • White light continuum

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