We discovered that the far-field light scattering spectra of microparticles over wavenumber at a certain angle could be decomposed into periodic components, with an oscillation frequency linearly dependent on the particle size at each angle. Based on this observation, we propose and experimentally demonstrate a new Fourier transform technique for microparticle size determination. This technique is simple, fast, robust in its data processing algorithm, and flexible in its detection system.
© 2007 Optical Society of America
Original Manuscript: October 23, 2006
Revised Manuscript: January 17, 2007
Manuscript Accepted: January 23, 2007
Published: April 3, 2007
Ye Luo, Jiandong Huang, and Ali Adibi, "Accurate determination of microparticle size using Fourier transform of light scattering spectrum over wavenumber," Opt. Lett. 32, 1171-1173 (2007)