Solutions to Maxwell's Equations using Spheroidal Coordinates

Details Solutions to Maxwell's Equations using Spheroidal Coordinates Solutions to Maxwell's Equations using Spheroidal Coordinates

2009-01-23

arxiv.org/abs/0901.3662v1

New Journal of Physics 11, 073007 (2009)

Physics

Optics

Scientific paper

10.1088/1367-2630/11/7/073007

Analytical solutions to the wave equation in spheroidal coordinates in the short wavelength limit are considered. The asymptotic solutions for the radial function are significantly simplified, allowing scalar spheroidal wave functions to be defined in a form which is directly reminiscent of the Laguerre-Gaussian solutions to the paraxial wave equation in optics. Expressions for the Cartesian derivatives of the scalar spheroidal wave functions are derived, leading to a new set of vector solutions to Maxwell's equations. The results are an ideal starting point for calculations of corrections to the paraxial approximation.

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