Eye-safe micro-pulse lidar on an 808nm laser diode

摘要

For long-term observations of the distribution of the tropospheric aerosol in Siberia, a year-round monitoring station for atmospheric parameters was established in Tomsk by lidar. The installation was carried out as part of Russian-French cooperation between the Institute of Atmospheric Optics and the LATMOS Laboratory (Sorbonne Universite) on the European project CNES EECLAT. For this purpose, the French company CIMEL Electronique manufactured the lidar CE372-NP according to the design of the LATMOS employees. Lidar belongs to the class of micro-pulse lidars operating at the same radiation wavelength. A diode laser at a wavelength of 808 nm is used as an emitter. The low pulse energy and the radiation wavelength of the semiconductor laser in the red region of the spectrum makes it work safe for the eyes. This makes it possible to fully automatically conduct continuous atmospheric sounding safe for others and to obtain long-term series of altitude profiles of backscattered radiation from the aerosol component of the lower troposphere. With the subsequent receipt of information on the height of the atmospheric boundary layer, restoration of its optical thickness and lidar ratio in combination with the CIMEL CE-318 photometer data. Lidar was installed at the "Fonovaya" Observatory of the IOA SB RAS, which is located in the background region of the Tomsk Region (56 ° 25 'N, 84 ° 04' E), from April 2015.