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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 23, Iss. 7 — Apr. 1, 1984
  • pp: 1044–1054

Critical-angle scattering of laser light from bubbles in water: measurements, models, and application to sizing of bubbles

Dean S. Langley and Philip L. Marston  »View Author Affiliations


Applied Optics, Vol. 23, Issue 7, pp. 1044-1054 (1984)
http://dx.doi.org/10.1364/AO.23.001044


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Abstract

Critical-angle scattering of laser light from bubbles was photographed, and angular structures in the far-zone intensity are compared with models. The radii of the freely rising bubbles were in the 26.4–814-μm range. Deviation from sphericity for the rising bubbles is considered. Diffraction effects make simple geometric optics inadequate near the critical angle. Coarse-structure intensity oscillations show agreement with a physical-optics approximation and with Mie theory. Measurements agree with derived expressions for the angular spacings of fine structure and contrast modulations. Uses of these structures in different bubble-sizing methods are discussed. The locations of scattered-wave virtual sources are modeled.

© 1984 Optical Society of America

History
Original Manuscript: November 21, 1983
Published: April 1, 1984

Citation
Dean S. Langley and Philip L. Marston, "Critical-angle scattering of laser light from bubbles in water: measurements, models, and application to sizing of bubbles," Appl. Opt. 23, 1044-1054 (1984)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-23-7-1044

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