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Chin. Phys. B, 2014, Vol. 23(5): 054201    DOI: 10.1088/1674-1056/23/5/054201

Scattering and propagation of terahertz pulses in random soot aggregate systems

Li Hai-Ying (李海英), Wu Zhen-Sen (吴振森), Bai Lu (白璐), Li Zheng-Jun (李正军)
School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China
Abstract  Scattering and propagation of terahertz pulses in random soot aggregate systems are studied by using the generalized multi-particle Mie-solution (GMM) and the pulse propagation theory. Soot aggregates are obtained by the diffusion-limited aggregation (DLA) model. For a soot aggregate in soot aggregate systems, scattering characteristics are analyzed by using the GMM. Scattering intensities versus scattering angles are given. The effects of different positions of the aggregate on the scattering intensities, scattering cross sections, extinction cross sections, and absorption cross sections are computed and compared. Based on pulse propagation in random media, the transmission of terahertz pulses in random soot aggregate systems is determined by the two-frequency mutual coherence function. Numerical simulations and analysis are given for terahertz pulses (0.7956 THz).
Keywords:  soot aggregate systems      terahertz pulse      scattering and propagation  
Received:  07 August 2013      Revised:  07 October 2013      Accepted manuscript online: 
PACS:  42.25.Dd (Wave propagation in random media)  
  42.68.Ay (Propagation, transmission, attenuation, and radiative transfer)  
  42.68.Mj (Scattering, polarization)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 60971065, 61308025, and 61172031) and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. K5051207014).
Corresponding Authors:  Li Hai-Ying     E-mail:
About author:  42.25.Dd; 42.68.Ay; 42.68.Mj

Cite this article: 

Li Hai-Ying (李海英), Wu Zhen-Sen (吴振森), Bai Lu (白璐), Li Zheng-Jun (李正军) Scattering and propagation of terahertz pulses in random soot aggregate systems 2014 Chin. Phys. B 23 054201

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