Measurements of Atmospheric Water Vapor with an Alexandrite Lidar.
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概要
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A differential absorption lidar (DIAL) for the detection of atmospheric water vapor was developed based on a tunable alexandrite laser. Theoretical estimation shows that the bandwidth of laser radiation and accuracy of the wavelength tuning critically affect detection errors. We propose a new accurate tuning method on the resonance line of H<SUB>2</SUB>O at 725.8 nm using the opto-galvanic effect in a Xe discharge tube, and compared it with an absorption method and a photo-acoustic method. The DIAL experiment demonstrates the detection range up to 9.5 km with a detection error of less than 50%. The H<SUB>2</SUB>O distributions measured were agreed with sonde data.
- 社団法人 レーザー学会の論文
社団法人 レーザー学会 | 論文
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