Document Type

Article

Publication Date

12-1-2008

Publication Title

Journal of the Optical Society of America A: Optics Image Science and Vision

Abstract

For a plane wave incident on either a Luneburg lens or a modified Luneburg lens, the magnitude and phase of the transmitted electric field are calculated as a function of the scattering angle in the context of ray theory. It is found that the ray trajectory and the scattered intensity are not uniformly convergent in the vicinity of edge ray incidence on a Luneburg lens, which corresponds to the semiclassical phenomenon of orbiting. In addition, it is found that rays transmitted through a large-focal-length modified Luneburg lens participate in a far-zone rainbow, the details of which are exactly analytically soluble in ray theory. Using these results, the Airy theory of the modified Luneburg lens is derived and compared with the Airy theory of the rainbows of a homogeneous sphere. (C) 2008 Optical Society of America

Original Citation

Lock, James A. "Scattering of an Electromagnetic Plane Wave by a Luneburg Lens. I. Ray Theory." Journal of the Optical Society of America A: Optics Image Science and Vision 25 (2008): 2971-2979.

DOI

10.1364/JOSAA.25.002971

Version

Publisher's PDF

Volume

25

Issue

12

Included in

Physics Commons

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