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Proceedings Paper

Raman-elastic-backscatter lidar for observations of tropospheric aerosol
Author(s): Atanaska D. Deleva; Ivan V. Grigorov; Lachezar A. Avramov; Vladimir A. Mitev; Alexander S. Slesar; Sergey Denisov
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Paper Abstract

In this work, a combined Raman-elastic backscatter lidar is described. It is based on a Q-switched powerful frequencydoubled Nd:YAG laser (output pulse power: up to 1 J at 1064 nm; up to 100 mJ at 532 nm; pulse duration 15 ns FWHM; repetition rate 2 Hz). A Cassegrain telescope (35 cm diameter, 200 cm focal length) collects backscattered radiation from atmospheric particles and molecules. Lidar's spectral receiving module consists of three cannels. The first two channels separate and detect elastic-backscattered lidar signals at laser wavelengths 1064 nm and 532 nm, respectively. In the third lidar channel, a radiation at a wavelength of 607 nm is selected and detected, resulting from Raman backscattering of laser second harmonic (532 nm) by atmospheric nitrogen molecules. Experimental profiles of the aerosol backscattering coefficient demonstrating measurement abilities of the system are shown and discussed. Particularly, attention is paid to profiles containing signals from high-altitude cirrus clouds, low-altitude stratus clouds, hazy atmospheric areas and Saharan dust over the city of Sofia.

Paper Details

Date Published: 19 December 2008
PDF: 8 pages
Proc. SPIE 7027, 15th International School on Quantum Electronics: Laser Physics and Applications, 70270Y (19 December 2008); doi: 10.1117/12.822509
Show Author Affiliations
Atanaska D. Deleva, Institute of Electronics (Bulgaria)
Ivan V. Grigorov, Institute of Electronics (Bulgaria)
Lachezar A. Avramov, Institute of Electronics (Bulgaria)
Vladimir A. Mitev, Institute of Electronics (Bulgaria)
Alexander S. Slesar, B.I. Stepanov Institute of Physics (Belarus)
Sergey Denisov, B.I. Stepanov Institute of Physics (Belarus)

Published in SPIE Proceedings Vol. 7027:
15th International School on Quantum Electronics: Laser Physics and Applications
Tanja Dreischuh; Elena Taskova; Ekaterina Borisova; Alexander Serafetinides, Editor(s)

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