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11 August 2009 Design and testing of a compact diode-laser-based differential absorption lidar (DIAL) for water vapor profiling in the lower troposphere
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Abstract
A compact, widely tunable semiconductor based water vapor differential absorption lidar (DIAL) has been built and tested at Montana State University (MSU). The laser transmitter uses a tunable external cavity diode laser (ECDL) with a center wavelength of 830 nm to injection seed two cascaded tapered semiconductor optical amplifier (SOA), producing 1.5 micro joule pulses at a pulse repetition rate and pulse width duration of 20 kHz and 1000 ns respectively, allowing for water vapor number density retrievals up to approximately 4 km. Water vapor number density profiles collected with the MSU water vapor DIAL will be compared with co-located radiosonde measurements, demonstrating the instruments ability to measure daytime and nighttime water vapor profiles in the lower troposphere.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Amin R. Nehrir, Kevin S. Repasky, and John L. Carlsten "Design and testing of a compact diode-laser-based differential absorption lidar (DIAL) for water vapor profiling in the lower troposphere", Proc. SPIE 7460, Lidar Remote Sensing for Environmental Monitoring X, 746005 (11 August 2009); https://doi.org/10.1117/12.824900
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