| 摘要 |
The present invention uses tunable and fixed frequency lasers as an optical light source in imaging laser detection and ranging (LIDAR) systems. This invention provides a high energy, short pulse length laser output which is tunable to or set at a desired wavelength. The tuning is used for performance optimization of lidar system; and for scientific investigations carried out using these systems. An example of performance optimization is the tuning to or setting of the laser at the so-called Jerlov minimum, which is dependent upon the optical characteristics of the particular water used. The improved system may be used for scientific investigation, such as determining Ks (the frequency-dependent optical attenuation coefficient) in the ocean at depth, as well as imaging various opaque objects under battlefield conditions, at depth. This invention has the effect of significantly improving the optical signal to noise ratio for all of these applications.
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