FORMULATIONS OF THE EXTENDED BOUNDARY-CONDITION METHOD FOR INCIDENT GAUSSIAN BEAMS USING MULTIPLE-MULTIPOLE EXPANSIONS

Authors
Citation
A. Doicu et T. Wriedt, FORMULATIONS OF THE EXTENDED BOUNDARY-CONDITION METHOD FOR INCIDENT GAUSSIAN BEAMS USING MULTIPLE-MULTIPOLE EXPANSIONS, J. mod. opt., 44(4), 1997, pp. 785-801
Citations number
23
Categorie Soggetti
Optics
Journal title
ISSN journal
09500340
Volume
44
Issue
4
Year of publication
1997
Pages
785 - 801
Database
ISI
SICI code
0950-0340(1997)44:4<785:FOTEBM>2.0.ZU;2-2
Abstract
Novel formulations for improving the numerical stability of the extend ed boundary conditions method and extending its application to highly elongated dielectric objects illuminated by a Gaussian beam are descri bed. The derived formulations are obtained as special cases of a gener al approach, which considers arbitrary complete system functions on th e particle surface. The surface currents are approximated by multiple spherical expansions or, for a fixed azimuthal mode, by the lowest-ord er multipoles located inside the particle surface. Results illustratin g the application of the procedures developed are presented.