We characterize the shape of a large nonspherical particle by means of the two-dimensional Fourier transformation of its diffraction pattern, called the S function. The main properties of S functions are considered. Some ways in which to retrieve the geometric parameters of a particle by use of its S function are discussed. In particular, the parameter of nonsphericity of a particle is defined by means of the S function.
© 2000 Optical Society of America
(050.1960) Diffraction and gratings : Diffraction theory
(290.5820) Scattering : Scattering measurements
(290.5850) Scattering : Scattering, particles
(350.4990) Other areas of optics : Particles
Anatoli Borovoi, Edward Naats, Ulrich Oppel, and Igor Grishin, "Shape Characterization of a Large Nonspherical Particle by Use of its Fraunhofer Diffraction Pattern," Appl. Opt. 39, 1989-1997 (2000)