5 February 1996 Multipole expansion for efficient calculation of focal distributions
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Proceedings Volume 2730, Second Iberoamerican Meeting on Optics; (1996); doi: 10.1117/12.231034
Event: Second Iberoamerican Meeting on Optics, 1995, Guanajuato, Mexico
Abstract
There is continued interest in calculation of the electromagnetic field distribution in the focal region of an optical system of high numerical aperture. Important applications include microscopy and optical information storage. Unfortunately direct evaluation of the diffraction integrals is extremely time-consuming. We have developed a new method in which the illumination is expanded in a series of multipole terms, each of which gives rise to a focal field which is an analytic function in three-dimensional space. The electric energy density in the focal region has been calculated for various lens and mirror systems.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Colin J. R. Sheppard, Peter Torok, "Multipole expansion for efficient calculation of focal distributions", Proc. SPIE 2730, Second Iberoamerican Meeting on Optics, (5 February 1996); doi: 10.1117/12.231034; https://doi.org/10.1117/12.231034
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KEYWORDS
Diffraction

Spherical lenses

Bessel functions

Electromagnetism

Optical spheres

Magnetism

Data storage

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