Volume 102, Number 4, May 2013
|Number of page(s)||4|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||11 June 2013|
An improved particle-sizing approach based on optical diffraction tomography
1 School of Optical and Electronic Information, Huazhong University of Science and Technology 1037 Luoyu Road, 430074, Wuhan, China
2 Department of Optoelectronics and Communication Engineering, Wuhan Vocational College of Software and Engineering - 117 Guanggu Road, 430205, Wuhan, China
3 College of Electrical and Electronic Engineering, Huazhong University of Science and Technology 1037 Luoyu Road, 430074, Wuhan, China
(a) Present address: School of Optical and Electronic Information, Huazhong University of Science and Technology - 1037 Luoyu Road, 430074, Wuhan, China.; email@example.com
Received: 28 January 2013
Accepted: 13 May 2013
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.
PACS: 42.25.Fx – Diffraction and scattering / 42.30.Wb – Image reconstruction; tomography
© EPLA, 2013
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