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Proceedings Paper

Monolithic microprocessor-controlled tuning and triggering system of TEA CO2 laser for differential absorption lidar
Author(s): Yanchen Qu; Deming Ren; Xiaoyong Hu; Fengmei M. Liu; Jinzhe Huang; Lili Zhang; Wenmei Song
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Paper Abstract

In the present work, directed toward using differential absorption lidar (DIAL) for measuring concentrations of pollutant gases, a monolithic microprocessor-controlled tuning and triggering system for rapidly tuning a TEA C02 laser is reported. It is shown that it is possible to utilize a high frequency stepping motor and a diffraction grating to rapidly select wavelength over rotational transitions in the 9.2-10.8 jtm region of the laser spectrum. The tuning is performed by applying appropriate signals to the stepping motor, which is coupled to the grating via a precision gear box. The microprocessor controls motion of the motor which rotates the correct angle for a given wavelength together with the grating. Many of pollutants have strong absorption lines in the 9-11 im region, therefore the wavelength tunable transversely excited atmospheric-pressure (TEA) CO2 laser becomes an ideal optical source for DIAL.

Paper Details

Date Published: 21 March 2003
PDF: 7 pages
Proc. SPIE 4893, Lidar Remote Sensing for Industry and Environment Monitoring III, (21 March 2003); doi: 10.1117/12.466149
Show Author Affiliations
Yanchen Qu, Harbin Institute of Technology (China)
Deming Ren, Harbin Institute of Technology (China)
Xiaoyong Hu, Harbin Institute of Technology (China)
Fengmei M. Liu, Harbin Institute of Technology (China)
Jinzhe Huang, Harbin Institute of Technology (China)
Lili Zhang, Harbin Institute of Technology (China)
Wenmei Song, Harbin Dongan Engine Co., Ltd. (China)

Published in SPIE Proceedings Vol. 4893:
Lidar Remote Sensing for Industry and Environment Monitoring III
Upendra N. Singh; Toshikasu Itabe; Zhishen Liu, Editor(s)

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