Lidar "BSE-4" for the atmospheric turbulence measurements

The task was to create a compact turbulent lidar, working on the backscatter enhancement effect. Initially, it was planned to make a lidar with the spacing of the receiving channels using two small 50 mm Mersenne telescopes collected from off-axis parabolic mirrors. Despite the measures taken, the system did not pass the stability test for prolonged operation. Then we used an optical layout in which the receiving channels were combined. The converted device turned out to be workable, but its sensitivity was slightly lower than that of the channel spacing scheme. Lidar "BSE-4" was successfully used in field experiments in 2017 (Tomsk, Lake Baikal).