Details

Autor(en) / Beteiligte

• Mori, Hideto
• Nayuki, Takuya
• Cao, Nianwen
• Fukuchi, Tetsuo
• Fujii, Takashi
• Nemoto, Koshichi
• Takeuchi, Nobuo

Titel

Development of a laser radar using LDS dye and sum frequency generation for NO2 measurement

Ist Teil von

• Electrical engineering in Japan, 2003-07, Vol.144 (2), p.26-33

Ort / Verlag

Hoboken: Wiley Subscription Services, Inc., A Wiley Company

Erscheinungsjahr

2003

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• A laser radar for measuring vertical concentration profiles of atmospheric NO2 was developed. The laser transmitter uses an LDS765 dye laser pumped by a Nd:YAG laser. The dye laser output is converted to wavelengths 446.8 and 448.1 nm, which are used for NO2 measurement, by sum frequency generation (SFG) using a pair of KD*P crystals. The dependence of the LDS765 dye laser output on wavelength and dye concentration was investigated, and the performance of the laser transmitter was evaluated. Compared to the Coumarin 445 dye laser conventionally used for NO2 measurement, this laser transmitter represents a significant improvement in output stability, as well as in maximum output energy and overall conversion efficiency. Using the newly developed laser radar, NO2 concentrations of 20 to 40 ppb were measured for vertical range 500 to 1000 m, which were in rough agreement with values monitored on the ground. © 2003 Wiley Periodicals, Inc. Electr Eng Jpn, 144(2): 26–33, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.10231