The beam-shape coefficients of arbitrary off-axis Gaussian beams in spheroidal coordinates are evaluated with a generalized Lorenz–Mie theory. The light-scattering properties of absorbing and nonabsorbing homogeneous spheroidal particles, such as the angular distribution of scattered intensity for a wide range of particles sizes and different complex refractive indices versus the magnitude and location of the beam waist, are investigated.
© 2003 Optical Society of America
Original Manuscript: March 18, 2003
Revised Manuscript: July 14, 2003
Published: November 20, 2003
Yingping Han, Gerard Gréhan, and Gerard Gouesbet, "Generalized Lorenz–Mie theory for a spheroidal particle with off-axis Gaussian-beam illumination," Appl. Opt. 42, 6621-6629 (2003)