Coherent 2 microm differential absorption and wind lidar with conductively cooled laser and two-axis scanning device.

作者信息

Ishii Shoken, Mizutani Kohei, Fukuoka Hirotake, Ishikawa Takayoshi, Philippe Baron, Iwai Hironari, Aoki Tetsuo, Itabe Toshikazu, Sato Atsushi, Asai Kazuhiro

机构信息

National Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei-shi, Tokyo, 184-8795, Japan.

出版信息

Appl Opt. 2010 Apr 1;49(10):1809-17. doi: 10.1364/AO.49.001809.

DOI:10.1364/AO.49.001809

PMID:20357863

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.

摘要