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Proceedings Paper

Stand-off detection and classification of CBRNe using a Lidar system based on a high power femtosecond laser
Author(s): Jun Izawa; Takeshi Yokozawa; Takao Kurata; Akihiro Yoshida; Yasushi Mastunaga; Toshihiro Somekawa; Shuzo Eto; Naohiro Manago; Hideyuki Horisawa; Shigeru Yamaguchi; Takashi Fujii; Hiroaki Kuze
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Paper Abstract

We propose a stand-off system that enables detection and classification of CBRNe (Chemical, Biological, Radioactive, Nuclear aerosol and explosive solids). The system is an integrated lidar using a high-power (terawatt) femtosecond laser. The detection and classification of various hazardous targets with stand-off distances from several hundred meters to a few kilometers are achieved by means of laser-induced breakdown spectroscopy (LIBS) and two-photon fluorescence (TPF) techniques. In this work, we report on the technical considerations on the system design of the present hybrid lidar system consisting of a nanosecond laser and a femtosecond laser. Also, we describe the current progress in our laboratory experiments that have demonstrated the stand-off detection and classification of various simulants. For the R and N detection scheme, cesium chloride aerosols have successfully been detected by LIBS using a high-power femtosecond laser. For the B detection scheme, TPF signals of organic aerosols such as riboflavin have clearly been recorded. In addition, a compact femtosecond laser has been employed for the LIBS classification of organic plastics employed as e-simulants.

Paper Details

Date Published: 7 October 2014
PDF: 7 pages
Proc. SPIE 9253, Optics and Photonics for Counterterrorism, Crime Fighting, and Defence X; and Optical Materials and Biomaterials in Security and Defence Systems Technology XI, 92530C (7 October 2014); doi: 10.1117/12.2067005
Show Author Affiliations
Jun Izawa, IHI Corp. (Japan)
Takeshi Yokozawa, INC Engineering Co. Ltd. (Japan)
Takao Kurata, IHI Corp. (Japan)
Akihiro Yoshida, IHI Corp. (Japan)
Yasushi Mastunaga, IHI Corp. (Japan)
Toshihiro Somekawa, Institute for Laser Technology (Japan)
Shuzo Eto, Central Research Institute of Electric Power Industry (Japan)
Naohiro Manago, Chiba Univ. (Japan)
Hideyuki Horisawa, Tokai Univ. (Japan)
Shigeru Yamaguchi, Tokai Univ. (Japan)
Takashi Fujii, Central Research Institute of Electric Power Industry (Japan)
Hiroaki Kuze, Chiba Univ. (Japan)


Published in SPIE Proceedings Vol. 9253:
Optics and Photonics for Counterterrorism, Crime Fighting, and Defence X; and Optical Materials and Biomaterials in Security and Defence Systems Technology XI
Roberto Zamboni; Douglas Burgess; Gari Owen; François Kajzar; Attila A. Szep; Harbinder Rana, Editor(s)

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