Simultaneous retrieval of the complex refractive index and particle size distribution

被引:35
|
作者
Ren, Yatao [1 ]
Qi, Hong [1 ]
Chen, Qin [1 ]
Ruan, Liming [1 ]
Tan, Heping [1 ]
机构
[1] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Peoples R China
来源
OPTICS EXPRESS | 2015年 / 23卷 / 15期
基金
中国国家自然科学基金;
关键词
SWARM OPTIMIZATION ALGORITHMS; CONDUCTION-RADIATION PROBLEM; OPTICAL CHARACTERIZATION; SUSPENDED PARTICLES; GENETIC ALGORITHM; HEAT-TRANSFER; SCATTERING; INVERSION; PARAMETERS; RANGE;
D O I
10.1364/OE.23.019328
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A secondary optimization technique is proposed that allows the complex refractive index and particle size distribution (PSD) to be retrieved simultaneously by using the diffuse transmittance (T), diffuse reflectance (R), and collimated transmittance (T-c) of a 1-D spherical particle systems as measured values. In the proposed method, two 1-D experimental samples of different thicknesses were exposed to continuous wave lasers of two different wavelengths. First, T, R, and T-c were calculated by solving the radiative transfer equation. Then, the complex refractive index and PSDs were retrieved simultaneously by applying the inversion technique, quantum particle swarm optimization. However, the estimated results of the PSDs proved to be inaccurate. Hence, a secondary optimization was performed to improve the accuracy of the PSDs on the basis of the first optimization process. The results showed that the proposed technique can estimate the complex refractive index and particle size distribution accurately. (C) 2015 Optical Society of America
引用
收藏
页码:19328 / 19337
页数:10
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