Fundamental measurement by in-line typed high-precision polarization lidar

Tatsuo Shiina; Masakazu Miyamoto; Dai Umaki; Kazuo Noguchi; Tetsuo Fukuchi

doi:10.1117/12.805237

9 December 2008 Fundamental measurement by in-line typed high-precision polarization lidar

Tatsuo Shiina, Masakazu Miyamoto, Dai Umaki, Kazuo Noguchi, Tetsuo Fukuchi

Proceedings Volume 7153, Lidar Remote Sensing for Environmental Monitoring IX; 71530B (2008) https://doi.org/10.1117/12.805237
Event: SPIE Asia-Pacific Remote Sensing, 2008, Noumea, New Caledonia

Abstract

An in-line typed new concept lidar system for high precision polarization measurement was developed. A specially designed polarization-independent optical circulator, which was composed by Gran laser prisms and highly transparent Faraday rotators, was developed. Its isolation between the orthogonal polarizations was improved up to more than 30 dB. It is sufficient to detect small rotation of the polarization plane of the propagating beam caused by lightning discharges due to the Faraday effect. The rotation angle of the polarization plane is estimated by the differential detection between the orthogonal polarization components of the lidar echoes. The in-line optics enables near range measurement from the near range of >30 m with the narrow field of view of 0.17 mrad. The fundamental measurements of lidar echoes in near and far fields, and low cloud activities were examined.

Citation Download Citation

Tatsuo Shiina, Masakazu Miyamoto, Dai Umaki, Kazuo Noguchi, and Tetsuo Fukuchi "Fundamental measurement by in-line typed high-precision polarization lidar", Proc. SPIE 7153, Lidar Remote Sensing for Environmental Monitoring IX, 71530B (9 December 2008); https://doi.org/10.1117/12.805237

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