Coherent 2 μm differential absorption and wind lidar with conductively cooled laser and two-axis scanning device
| Autor: | Baron Philippe, Atsushi Sato, Hironari Iwai, Tetsuo Aoki, Shoken Ishii, Hirotake Fukuoka, Kohei Mizutani, Toshikazu Itabe, Kazuhiro Asai, Takayoshi Ishikawa |
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| Rok vydání: | 2010 |
| Předmět: |
Pulse repetition frequency
Materials science Laser scanning business.industry Materials Science (miscellaneous) Laser Industrial and Manufacturing Engineering Wind speed law.invention Full width at half maximum Lidar Optics law Business and International Management business Pulse-width modulation Diode |
| Zdroj: | Applied Optics. 49:1809 |
| ISSN: | 1539-4522 0003-6935 |
| DOI: | 10.1364/ao.49.001809 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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