Measurement of the Azimuthal Dependance of Cross-Polarized Lidar Returns and its Relation to Optical Depth

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Authors
  1. Roy, N.
  2. Roy, G.
  3. Bissonnette, L.R.
  4. Simard, J.R.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN)
Abstract
We measure with a gated intensifier CCD camera the cross-polarized backscattered light from a linearly polarized laser beam penetrating a cloud made of spherical particles. In accordance with previously published results we observe a clear azimuthal pattern in the recorded images. We show that the pattern is symmetrical, that is originates from second-order scattering, and that higher-order scattering causes blurring that increases with optical depth. We also find that the contrast in the symmetrical features can be related to measurement of the optical depth. Moreover, when the blurring contributions are identified and subtracted, the resulting pattern provides a pure second-order scattering measurement that can be used for retrieval of droplet size.
Date of publication
01 May 2004
Number of Pages
10
Reprinted from
Applied Optics, vol 43, no 13, 2004, p 2777-2785
DSTKIM No
CA024186
CANDIS No
521703
Format(s):
Hardcopy;Document Image stored on Optical Disk

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