Abstract
A sum-frequency-generation system for differential absorption lidar measurement of atmospheric nitrogen dioxide in the lower troposphere was developed. The system uses a combination of a pair of KD*P crystals and a tunable dye laser with LDS 765 dye pumped by the second harmonic of a Nd:YAG laser to generate λon and λoff alternatively. Compared with the conventional system that uses Coumarin 445 dye pumped by the third harmonic, the output energy and long-term stability were improved. By use of this system, atmospheric NO2 concentrations of approximately 10–50 ppb were measured, with an instrumental error of approximately 7 ppb.
© 2002 Optical Society of America
Full Article | PDF ArticleMore Like This
Takuya Nayuki, Kohji Marumoto, Takashi Fujii, Tetsuo Fukuchi, Koshichi Nemoto, Akira Shirakawa, and Ken-ichi Ueda
Appl. Opt. 43(35) 6487-6491 (2004)
Takashi Fujii, Tetsuo Fukuchi, Naohiko Goto, Koshichi Nemoto, and Nobuo Takeuchi
Appl. Opt. 40(6) 949-956 (2001)
Takashi Fujii, Tetsuo Fukuchi, Nianwen Cao, Koshichi Nemoto, and Nobuo Takeuchi
Appl. Opt. 41(3) 524-531 (2002)