Title :
Estimation of various atmospheric constituent measurements by using solid state tunable lasers
Author :
Toriumi, Ryoichi ; Tai, Hideo ; Takeuchi, Nobuo
Author_Institution :
Inf. Technol. Res. Inst., Tokyo Gas Co. Ltd., Japan
Abstract :
Detectivities of differential absorption lidar (DIAL) using solid state lasers have been evaluated. Harmonic-generation and mixing of a Ti:Al2O3 laser and a Nd:YAG laser was considered as a light source, because of its wide-range wavelength tunability from ultraviolet to infrared. Twelve gases were selected for the evaluations because of their importance for the global environment, atmospheric pollution, and industrial gas leakage. As a result, detection limits of H2O, CH4, and NO2 were 4.2 km, 4.1 km, and 1.8 km for average atmospheric concentrations, assuming that S/N=10 is the limit
Keywords :
air pollution; air pollution detection and control; atmospheric composition; atmospheric techniques; geophysical techniques; optical radar; remote sensing; remote sensing by laser beam; DIAL; H2O; NO2; Nd:YAG; Ti:Al2O3; air pollution; atmosphere chemical composition; differential absorption lidar; harmonic generation; infrared; laser remote sensing; measurement technique; methane; solid state tunable laser; ultraviolet; visible; Atmospheric measurements; Atmospheric waves; Electromagnetic wave absorption; Gas lasers; Gases; Laser radar; Light sources; Pollution measurement; Solid lasers; Wavelength measurement;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International
Conference_Location :
Tokyo
Print_ISBN :
0-7803-1240-6
DOI :
10.1109/IGARSS.1993.322332
