title: Coherent 2 microm differential absorption and wind lidar with conductively cooled laser and two-axis scanning device.
abstract: A coherent 2 microm differential absorption and wind lidar (Co2DiaWiL) was developed to measure CO(2) concentration and line-of-sight wind speed. We conductively cooled a pumping laser head to -80 degrees C and diode arrays to approximately 20 degrees C. A Q-switched laser outputs an energy of 80 mJ (pulse width 150 ns (FWHM), pulse repetition frequency up to 30 Hz). CO(2) measurements made over a column range (487-1986 m) for 5 min accumulation time pairs achieved 0.7% precision. Line-of-sight wind speeds for ranges up to approximately 20 km and returns from a mountainside located 24 km away from the Co2DiaWiL were obtained.
authors.affiliation: National Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei-shi, Tokyo, 184-8795, Japan. sishii@nict.go.jp
authors.forename: Shoken
authors.initials: S
authors.lastname: Ishii
authors.forename: Kohei
authors.initials: K
authors.lastname: Mizutani
authors.forename: Hirotake
authors.initials: H
authors.lastname: Fukuoka
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Ishikawa
authors.forename: Baron
authors.initials: B
authors.lastname: Philippe
authors.forename: Hironari
authors.initials: H
authors.lastname: Iwai
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Aoki
authors.forename: Toshikazu
authors.initials: T
authors.lastname: Itabe
authors.forename: Atsushi
authors.initials: A
authors.lastname: Sato
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Asai