White-light burst generated during the filamentation of a Terawatt laser beam

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Authors
  1. Théberge, F.
  2. Châteauneuf, M.
  3. Dubois, J.
  4. Mathieu, P.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN)
Abstract
Defence Research & Development Canada - Valcartier (DRDC Valcartier) initiated many projects on femtosecond laser based counter-measure applications. One of the main properties of high peak power femtosecond laser pulses is their transformation into a white-light supercontinuum, which can be exploited for dazzle (and possibly damage) counter-measure purposes. Contrary to normal dazzle generated using a narrow-spectrum laser source, the white-light supercontinuum from femtosecond laser pulses spans continuously from the ultraviolet up to the infrared. Such broadband white-light lasers are virtually impossible to block because they do not rely on a single wavelength to achieve the effect. This report presents the characterization of the white-light laser burst produced during the propagation in air of a femtosecond-Terawatt laser. The supercontinuum was generated from 200 nm in the ultraviolet up to 13.6 um in the far infrared, which led to the first worldwide demonstration of such a broadband laser source.

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Keywords
femtosecond-terawatt;filament;white-light laser;counter-measure
Report Number
DRDC-VALCARTIER-TR-2010-416 — Technical Report
Date of publication
01 Jun 2011
Number of Pages
44
DSTKIM No
CA046493
CANDIS No
806962
Format(s):
Electronic Document(PDF)

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