Development of a compact lidar system using OPO

Yasuhiro Okada; Masafumi Yorozu; Akira Endo

doi:10.1117/12.275155

26 May 1997 Development of a compact lidar system using OPO

Yasuhiro Okada, Masafumi Yorozu, Akira Endo

Proceedings Volume 3104, Lidar Atmospheric Monitoring; (1997) https://doi.org/10.1117/12.275155
Event: Environmental Sensing III, 1997, Munich, Germany

Abstract

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.

Citation Download Citation

Yasuhiro Okada, Masafumi Yorozu, and Akira Endo "Development of a compact lidar system using OPO", Proc. SPIE 3104, Lidar Atmospheric Monitoring, (26 May 1997); https://doi.org/10.1117/12.275155

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