Light scattering resonances in small particles with electric and magnetic properties

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URI: http://hdl.handle.net/10902/3881
ISSN: 1084-7529
ISSN: 1520-8532
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Autoría
García Cámara, Braulio; Moreno Gracia, FernandoAutoridad Unican; González Fernández, FranciscoAutoridad Unican; Saiz Vega, José MaríaAutoridad Unican; Videen, G.
Fecha
2008-02-01
Derechos
© 2008 Optical Society of America, This paper was published in JOSA A and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/JOSAA.25.000327. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Publicado en
Journal of the Optical Society of America A, Vol. 25, Issue 2, pp. 327-334 (2008)
Editorial
Optical Society of America
Resumen/Abstract
Lorenz–Mie resonances produced by small spheres are analyzed as a function of their size and optical properties ( ε≷0 , μ≷0 ). New generalized (μ≠1) approximate and compact expressions of the first four Lorenz–Mie coefficients ( a1 , b1 , a2 , and b2 ) are calculated. With these expressions and for small particles with various values of ε and μ, the extinction cross section (Qext) is calculated and analyzed, in particular for resonant conditions. The dependence on particle size of the extinction resonance, together with the resonance shape (FWHM), is also analyzed. In addition to the former analysis, a study of the scattering diagrams for some interesting values of ε and μ is also presented.
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