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Secondary Dark Rings Of Internal Conical Refraction, Karl F. Warnick, David V. Arnold
Secondary Dark Rings Of Internal Conical Refraction, Karl F. Warnick, David V. Arnold
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This paper treats the phenomenon of internal conical refraction, in which a narrow beam propagating along an optical axis of a biaxial anisotropic medium spreads into a hollow cone. An expression is obtained for the intensity distribution produced by conical refraction that predicts additional fringes concentric to the well known Poggendorf dark ring for certain propagation distances and beam widths.