title: Lidar measurement of constituents of microparticles in air by laser-induced breakdown spectroscopy using femtosecond terawatt laser pulses.
abstract: We experimentally demonstrated remote sensing of the constituents of microparticles in air by combining laser-induced breakdown spectroscopy (LIBS) and lidar, using femtosecond terawatt laser pulses. Laser pulses of 70 fs duration and 130 mJ energy generated filaments when focused at a focal length of 20 m and the pulses irradiated artificial saltwater aerosols in air at a 10 Hz pulse repetition rate. Na fluorescence was observed remotely at a distance of 16 m using a 318 mm diameter Newtonian telescope, a spectrometer, and an intensified CCD camera. These results show the possibility of remote measurement of the constituents of atmospheric particles, such as aerosols, clouds, and toxic materials, by LIBS-lidar using femtosecond terawatt laser pulses.
authors.affiliation: Central Research Institute of Electric Power Industry, Kanagawa, Japan. fujii@criepi.denken.or.jp
authors.forename: Takashi
authors.initials: T
authors.lastname: Fujii
authors.forename: Naohiko
authors.initials: N
authors.lastname: Goto
authors.forename: Megumu
authors.initials: M
authors.lastname: Miki
authors.forename: Takuya
authors.initials: T
authors.lastname: Nayuki
authors.forename: Koshichi
authors.initials: K
authors.lastname: Nemoto