Some peculiarities in laser sensing of optically anisotropic media

Bruno Valentinov Kaul; Dmitrii N. Romashov; Ignatii V. Samokhvalov

doi:10.1117/12.337053

13 January 1999 Some peculiarities in laser sensing of optically anisotropic media

Bruno Valentinov Kaul, Dmitrii N. Romashov, Ignatii V. Samokhvalov

Proceedings Volume 3583, Fifth International Symposium on Atmospheric and Ocean Optics; (1999) https://doi.org/10.1117/12.337053
Event: Fifth International Symposium on Atmospheric and Ocean Optics, 1998, Tomsk, Russian Federation

Abstract

Several physical factors that govern the light scattering scenario in optically anisotropic media are discussed and the degree to which they may affect the date of laser sounding of crystal clouds is assessed. Among the peculiarities of light propagation and scattering in such media there are: 1) possible changes in the state of polarization of a sounding beam; 2) the transformations of the polarization state and extinction of sounding radiation may depend on the direction of sounding; 3) the data of laser sounding regarding the backscatter and lidar depolarization may be ambiguous. The matter is that in an anisotropic medium these properties of the backscattered radiation depend on the polarization state of a sounding beam and on the orientation of the lidar. As the calculated and experimental data presented in this paper show, the change of the sounding beam polarization state during the propagation in cirrus clouds may be neglected in the majority of practical cases. At the same time, the dependence of the radiation extinction on the direction of sounding, as well as the ambiguity in sounding data mentioned above should certainly be taken into account.

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Bruno Valentinov Kaul, Dmitrii N. Romashov, and Ignatii V. Samokhvalov "Some peculiarities in laser sensing of optically anisotropic media", Proc. SPIE 3583, Fifth International Symposium on Atmospheric and Ocean Optics, (13 January 1999); https://doi.org/10.1117/12.337053

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KEYWORDS

Polarization

Particles

LIDAR

Light scattering

Clouds

Mineralogy

Optical testing

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