Estimation of the ratio of aerosol to molecular backscattering by two closely disposed wavelengths using CuBr lidar sounding (510.6 nm, 578.2 nm)

G. V. Kolarov; I. V. Grigorov; D. V. Stoyanov

doi:10.1117/12.822511

19 December 2008 Estimation of the ratio of aerosol to molecular backscattering by two closely disposed wavelengths using CuBr lidar sounding (510.6 nm, 578.2 nm)

G. V. Kolarov, I. V. Grigorov, D. V. Stoyanov

Author Affiliations +

Proceedings Volume 7027, 15th International School on Quantum Electronics: Laser Physics and Applications; 702710 (2008) https://doi.org/10.1117/12.822511
Event: 15th International School on Quantum Electronics: Laser Physics and Applications, 2008, Bourgas, Bulgaria

Abstract

In this work we developed a method for estimation of the ratio of aerosol to molecular backscattering coefficients in lidar sounding of the atmosphere. We presented our first results of such analysis of lidar measurement carried out in June- July 2008, using lidar system with a CuBr-laser and two receiving channels. The laser emits simultaneously two closely disposed wavelengths λ₁=510.6 nm and λ₂=578.2 nm of similar output powers. The spectral distance between these wavelengths provides well distinguished molecular scattering signal. From the other side the both wavelengths are too close to accept (in the first order of approximation) a similarity in the aerosol scattering conditions. Both lidar channels have very similar technical parameters (as overlapping functions, photon detector sensitivity, optical transmission, etc.) and thus, provide similar output signal levels for both wavelengths. The preliminary results from the analysis of experimental data demonstrated the opportunity to detect and to process well distinguished lidar signals in clear atmosphere. The operational heights exceed 9 km at accumulation time 30 min, that is typical for the adopted integration time in European lidar network EARLINET.

Citation Download Citation

G. V. Kolarov, I. V. Grigorov, and D. V. Stoyanov "Estimation of the ratio of aerosol to molecular backscattering by two closely disposed wavelengths using CuBr lidar sounding (510.6 nm, 578.2 nm)", Proc. SPIE 7027, 15th International School on Quantum Electronics: Laser Physics and Applications, 702710 (19 December 2008); https://doi.org/10.1117/12.822511

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