Adaptive optics system for remote sensing applications of filamentation

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Authors
  1. Daigle, J-F
  2. Bernier, R.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN);Les Instruments Optiques du St-Laurent Inc, Boucherville Que (CAN)
Abstract
Laser filaments represent a potentially useful tool in terms of remote and atmospheric applications. Indeed, the high intensity inside the filament core induces nonlinear effects which can broaden the spectrum from the ultraviolet to the mid-infrared. This white light laser could be used as an effective counter measure to blind detectors or guide missiles away from the target. Moreover, its intensity is sufficiently high to ionize the transparent medium in which it propagates. The ionized atoms and molecules recombine and emit a fingerprint fluorescence, characteristic of the ionized elements. This property of filamentation opens the way for remote sensing applications. However, the generation and control of those filaments poses real challenges. This report is about the work that has been done at RDDC-Valcartier, in collaboartion with Laval University, to design, develop and test an adaptive optics (AO) system to be used with a lidar in remote sensing applications. This AO system has been tested to allow initiation of filaments as far as 120 m from the lidar laser source. Also, in this work, the influence of atmospheric turbulences on the initiation and strength of the filamentation process has been studied.

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Report Number
DRDC-VALCARTIER-CR-2011-539 — Contractor Report
Date of publication
01 Mar 2011
Number of Pages
52
DSTKIM No
CA037880
CANDIS No
537740
Format(s):
Electronic Document(PDF)

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