### Abstract

Expanding on developments presented in an earlier paper, theoretical expressions for the scattering coefficients of a homogeneous, absorbing, spherical particle irradiated by a fifth-order Gaussian beam are presented for the special case of the particle center located on the propagation axis of the beam. For this case, evaluation of two-dimensional surface integrals, required in computing the scattering coefficients for the most general particle location, is reduced to a computationally more efficient one-dimensional integral. For a typical size parameter α=πd/λ=17, the CPU time required for calculation of scattering coefficients is reduced by a factor of ∼1500 by using the simplified coefficient expressions. In addition, computation of electromagnetic field components is reduced from double summation to single summation expressions, further simplifying the field calculations.

Original language | English (US) |
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Pages (from-to) | 2709-2711 |

Number of pages | 3 |

Journal | Applied Physics Letters |

Volume | 55 |

Issue number | 26 |

DOIs | |

Publication status | Published - Dec 1 1989 |

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### ASJC Scopus subject areas

- Physics and Astronomy (miscellaneous)

### Cite this

*Applied Physics Letters*,

*55*(26), 2709-2711. https://doi.org/10.1063/1.101932