Lorenz-Mie resonances produced by small spheres are analyzed as a function of their size and optical properties (epsi≷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 epsi 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 epsi and μ is also presented.
© 2008 Optical Society of America
Original Manuscript: August 16, 2007
Revised Manuscript: November 21, 2007
Manuscript Accepted: November 21, 2007
Published: January 10, 2008
Vol. 3, Iss. 3 Virtual Journal for Biomedical Optics
B. García-Cámara, F. Moreno, F. González, J. M. Saiz, and G. Videen, "Light scattering resonances in small particles with electric and magnetic properties," J. Opt. Soc. Am. A 25, 327-334 (2008)