Abstract
Coherent Doppler Lidar is an attractive sensor for remote measurment of target velocity, wind speed and windshear.1 A pulsed laser is usually used for coherent Doppler Lidar.2 Pulsed coherent Lidar needs high peak power, good frequency stability and good spatial characteristics so as to produce a diffraction-limited spot in the far field. The wavelength of 1.5 μ m is highest from the view point of eye-safety, and high quality photo detectors or optical components are easily aveilable at this wavelength for use in optical communication. But it is difficult to get a stable pulsed laser at the wavelength of 1.5 μ m.
© 1995 Optical Society of America
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