An improved particle-sizing approach based on optical diffraction tomography

作者:Ding, Chizhu; Yang, Kecheng; Li, Wei*; Xia, Min; Tan, Dan
来源:EPL, 2013, 102(4): 44003.
DOI:10.1209/0295-5075/102/44003

摘要

We report on sizing spherical particles from far-field scattering light based on optical diffraction tomography. The distribution of the scattering potential, i.e. the distribution of the refractive index can be retrieved from an angular-resolved scattered field via an inverse Fourier transform. An algorithm based on this method was implemented and tested on a class of low-contrast particles. The results demonstrate that this method provides an accurate estimate of the particle size in the presence of moderate noise.