Coherent Doppler LIDAR system switching the LOS direction by wavelength of laser

摘要

The expectation for coherent Doppler LIDAR (CDL) systems applied for wind energy and airport safety is rapidly increased and high reliability and the mass productivity are strongly required. To satisfy the requirements, we have developed a new coherent Doppler LIDAR (CDL) system that switch line-of-sight directions by switching the wavelength without a mechanical scanner. The CDL consists of μITLA, WDM and multi-beam scanner. We demonstrated wind velocity and wind direction measurement at more than 250-m distance using this system.