Multispectral ultraviolet fluorescence lidar for environmental monitoring

Philip J. Hargis Jr.; Gary C. Tisone; John S. Wagner; Thomas D. Raymond; T. L. Downey

doi:10.1117/12.205584

10 February 1995 Multispectral ultraviolet fluorescence lidar for environmental monitoring

Philip J. Hargis Jr., Gary C. Tisone, John S. Wagner, Thomas D. Raymond, T. L. Downey

Proceedings Volume 2366, Optical Instrumentation for Gas Emissions Monitoring and Atmospheric Measurements; (1995) https://doi.org/10.1117/12.205584
Event: Optical Sensing for Environmental and Process Monitoring, 1994, McLean, VA, United States

Abstract

We describe a multispectral ultraviolet (UV) fluorescence laser remote sensing system developed to detect and identify airborne pollutants. The system uses a UV laser source that is continuously tunable from 250 to 400 nm in conjunction with a database of fluorescence signatures and multivariate analysis algorithms to obtain species concentrations from multispectral UV fluorescence measurements. As presently configured, the system is designed to operate with sequentially transmitted laser wavelengths between 250 and 400 nm at a pulse repetition rate of 10 Hz and is designed to map chemical concentrations with a range resolution of approximately 1 m. We describe the optical detection, associated data acquisition and control electronics, and tunable UV laser transmitter. We also describe a unique software package used for instrument setup and control. Based on sensitivity calculations, 1 ppm-m of toluene can be detected at a range of approximately 2.0 km with a range resolution of 1 m and a signal-to-noise ratio of approximately 3.

Citation Download Citation

Philip J. Hargis Jr., Gary C. Tisone, John S. Wagner, Thomas D. Raymond, and T. L. Downey "Multispectral ultraviolet fluorescence lidar for environmental monitoring", Proc. SPIE 2366, Optical Instrumentation for Gas Emissions Monitoring and Atmospheric Measurements, (10 February 1995); https://doi.org/10.1117/12.205584

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