Title :
A midinfrared laser spectrometer for the in-situ measurement of stratospheric nitrous oxide
Author :
Amato, F.D. ; De Rosa, M. ; Mazzinghi, P. ; Pantani, M. ; Poggi, P. ; Werle, P.W. ; Castagnoli, F.
Author_Institution :
Ist. Nazionale di Ottica Applicata, Firenze, Italy
Abstract :
In this paper, mid-infrared spectrometer based on a liquid nitrogen cooled lead-salt diode laser, emitting at 2190 cm-1 for the in-situ measurement of stratospheric nitrous oxide is developed. The system operates unattended for several hours under changing ambient conditions: during flight, the pressure is ranging from 1000 down to 30 mbar, temperature ranges from +70°C to -90°C. Typical flight measurements are performed between 10000 and 22000 m of altitude and at an aircraft speed of 160-190 m/s.
Keywords :
aircraft instrumentation; atmospheric chemistry; gas sensors; infrared spectrometers; lead compounds; measurement by laser beam; nitrogen compounds; semiconductor lasers; 10000 to 22000 m; 160 to 190 m/s; 30 to 1000 mbar; 70 to -90 C; N2O; flight measurement; in-situ measurement; liquid nitrogen cooled lead-salt diode laser; midinfrared laser spectrometer; stratospheric nitrous oxide; Absorption; Calibration; Chemistry; Geophysical measurements; Laser beams; Optical filters; Spectroscopy; Terrestrial atmosphere; Wavelength measurement; Zinc compounds;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1313544
