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Article
Improved Gaussian Beam-Scattering Algorithm
Applied Optics
  • James A. Lock, Cleveland State University
Document Type
Article
Publication Date
1-20-1995
Disciplines
Abstract
The localized model of the beam-shape coefficients for Gaussian beam-scattering theory by a spherical particle provides a great simplification in the numerical implementation of the theory. We derive an alternative form for the localized coefficients that is more convenient for computer computations and that provides physical insight into the details of the scattering process. We construct a FORTRAN program for Gaussian beam scattering with the localized model and compare its computer run time on a personal computer with that of a traditional Mie scattering program and with three other published methods for computing Gaussian beam scattering. We show that the analytical form of the beam-shape coefficients makes evident the fact that the excitation rate of morpholoy-dependent resonances is greatly enhanced for far off-axis incidence of the Gaussian beam.
DOI
10.1364/AO.34.000559
Version
Publisher's PDF
Citation Information
Lock, James A. "Improved Gaussian Beam-Scattering Algorithm." Applied Optics 34 (1995): 559-570.