Cusp diffraction catastrophe from spheroids: generalized rainbows and inverse scattering
- 1 December 1985
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 10 (12) , 588-590
- https://doi.org/10.1364/ol.10.000588
Abstract
The angular location of the recently discovered cusp pattern in the far-field scattering from an oblate spheroid is calculated as a function of the aspect ratio D/H. The calculation assumes the diameter D ≫ λ and is limited to illumination perpendicular to the short axis of the spheroid. It agrees with observations for water drops in the range 1.22 < D/H < 1.37 with D ~ 1 mm.Keywords
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