The generalized Lorenz–Mie theory deals with the interaction between spheres and arbitrarily shaped illuminating beams. An efficient use of the theory requires efficient evaluation of the so-called beam-shape coefficients involved in the description of the illuminating beam. A less time-consuming method of evaluation relies on the localized approximation. However, it lacks flexibility when the description of the illuminating beam is modified. We present a new version of this method, called the integral localized approximation, that exhibits the desired property of flexibility.
© 1998 Optical Society of America
Kuan Fang Ren, Gérard Gouesbet, and Gérard Gréhan, "Integral Localized Approximation in Generalized Lorenz-Mie Theory," Appl. Opt. 37, 4218-4225 (1998)