Development of a compact lidar system using OPO

Details Development of a compact lidar system using OPO Development of a compact lidar system using OPO

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spie.3104..257o&link_type=abstract

Proc. SPIE Vol. 3104, p. 257-264, Lidar Atmospheric Monitoring, Jean-Pierre Wolf; Ed.

Computer Science

Scientific paper

A compact differential absorption LIDAR (DIAL) system was developed for monitoring spatial distribution of NO2 concentration in relatively short range. The DIAL system was composed of a LD pumped Nd:YLF laser and an optical parametric oscillator (OPO) as light source. A telescope, filters, a photo tube and photomultiplier were used to detect backscattered signals. A digital oscilloscope was used as a data accumulator. A personal computer and a pulse generator were used to control the DIAL system. The output energy of OPO was 40 (mu) J and its bandwidth was 5 cm-1. Using this compact DIAL system, the spatial distribution of NO2 concentration around a hollow tube connected to a 2% NO2 gas bottle was measured. The maximum concentration value was 0.6% and the NO2 concentration peak placed at 30 m away from DIAL system. This result was in good agreement with the geometrical set up of the hollow tube.

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