Abstract

ABSTRACT This paper describes a compact imaging lidar system capable of detecting fluorescence of substances excited by the third harmonic of a Nd.YAG laser using a CCD camera with gated image intensifier. The system can be mounted on a small airplane or ship, and will provide the real time image of oil spills and classification of substances for cleanup operations. We demonstrated a technique for measuring the extinction coefficients from the image data of the water Raman scattering. In order to interpret the time-resolved data obtained in the field, fluorescent characteristics of substances were measured with a streak scope in the laboratory between the wavelengths of 350 and 575 nm and with decay times.

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