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| The LIDAR system used by Churnside and his colleague James Wilson is based on a Q-switched Nd:YAG laser. It produces 12 mJ of 532-nm light in a 12 ns pulse at a repetition rate of 30 Hz. They also use a clever mixture of electronics and a gated intensified CCD to image the fish from the aircraft. (Credit: James Churnside) |
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