Abstract

A coherent 2μm differential absorption and wind lidar (Co2DiaWiL) was developed to measure CO2 concentration and line-of-sight wind speed. We conductively cooled a pumping laser head to 80°C and diode arrays to approximately 20°C. A Q-switched laser outputs an energy of 80mJ (pulse width 150ns (FWHM), pulse repetition frequency up to 30Hz). CO2 measurements made over a column range (4871986m) for 5min accumulation time pairs achieved 0.7% precision. Line-of-sight wind speeds for ranges up to approximately 20km and returns from a mountainside located 24km away from the Co2DiaWiL were obtained.

© 2010 Optical Society of America

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