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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 16 — Jun. 1, 2006
  • pp: 3817–3825

Fiber-optic laser sensor for mine detection and verification

Christian Bohling, Dirk Scheel, Konrad Hohmann, Wolfgang Schade, Matthias Reuter, and Gerhard Holl  »View Author Affiliations


Applied Optics, Vol. 45, Issue 16, pp. 3817-3825 (2006)
http://dx.doi.org/10.1364/AO.45.003817


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Abstract

What we believe to be a new optical approach for the identification of mines and explosives by analyzing the surface materials and not only bulk is developed. A conventional manually operated mine prodder is upgraded by laser-induced breakdown spectroscopy (LIBS). In situ and real-time information of materials that are in front of the prodder are obtained during the demining process in order to optimize the security aspects and the speed of demining. A Cr 4 + : Nd 3 + : YAG microchip laser is used as a seed laser for an ytterbium-fiber amplifier to generate high-power laser pulses at 1064   nm with pulse powers up to E p = 1   mJ , a repetition rate of f rep. = 2 20   kHz and a pulse duration of t p = 620   ps . The recorded LIBS signals are analyzed by applying neural networks for the data analysis.

© 2006 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3440) Lasers and laser optics : Laser-induced breakdown
(280.3420) Remote sensing and sensors : Laser sensors
(300.6360) Spectroscopy : Spectroscopy, laser
(350.5400) Other areas of optics : Plasmas

History
Original Manuscript: May 23, 2005
Revised Manuscript: October 20, 2005
Manuscript Accepted: October 28, 2005

Citation
Christian Bohling, Dirk Scheel, Konrad Hohmann, Wolfgang Schade, Matthias Reuter, and Gerhard Holl, "Fiber-optic laser sensor for mine detection and verification," Appl. Opt. 45, 3817-3825 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-16-3817

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