Abstract
A design is proposed of an eye-safe high spectral resolution lidar operating at a wavelength of 532 nm. Absolute calibration is ensured by a molecular channel where aerosol signals are filtered in an iodine-filled cell. Laser beam expansion in a transmitter via a receiving telescope ensures high thermo-mechanical stability of the design, which allows a small field-of-view and substantial reduction of the background noise level. A detailed optical circuit of the transceiver is shown, where the transmitter and the receiver are located on different sides of the optical bench for better stability. Specifications of the laser and the system are given. Lidar returns are calculated, and measurement errors are estimated. It is shown that the time of averaging should be no longer than 1 min to attain 10% accuracy when calculating the aerosol backscattering coefficient and optical depth in the troposphere. The system proposed is to operate continuously and unattended.
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Original Russian Text © I.A. Razenkov, 2013, published in Optica Atmosfery i Okeana.
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Razenkov, I.A. Aerosol lidar for continuous atmospheric monitoring. Atmos Ocean Opt 26, 308–319 (2013). https://doi.org/10.1134/S1024856013040118
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DOI: https://doi.org/10.1134/S1024856013040118