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.