12 August 1988 Backscattering Of Laser Light From Freely Rising Spherical And Spheroidal Air Bubbles In Water
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Abstract
Observations were made of the near backward scattering of polarized laser light from freely rising spherical and oblate spheroidal air bubbles in fresh water. The cross-polarized pattern was observed and was modeled with a physical optics approximation for two different incident polarization directions relative to the axis of rotational symmetry of the spheroidal bubble. A rigid sphere drag law and relations from hydrodynamics were used to estimate bubble oblateness. The directional caustics associated with the near-backward directed wavefronts from oblate bubbles were calculated and may be used to estimate bubble oblateness from certain features of the angular scattering pattern.
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W.Patrick Arnott, Philip L Marston, "Backscattering Of Laser Light From Freely Rising Spherical And Spheroidal Air Bubbles In Water", Proc. SPIE 0925, Ocean Optics IX, (12 August 1988); doi: 10.1117/12.945737; https://doi.org/10.1117/12.945737
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