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Terahertz Time-Domain Spectroscopy method for optical parameter extraction of plastic materials
Terahertz Time-Domain Spectroscopy method for optical parameter extraction of plastic materials
投稿时间:2017-04-03  修订日期:2017-06-13
中文关键词:Fourier transform  Terahertz Time-Domain Spectroscopy  optical parameters  refractive index  extinction coefficient
英文关键词:Fourier transform  Terahertz Time-Domain Spectroscopy  optical parameters  refractive index  extinction coefficient
基金项目:
作者单位
ZHANG Dandan Changchun University of Science and TechnologyChangchun Jilin 130022China 
REN Jiaojiao Changchun University of Science and TechnologyChangchun Jilin 130022China 
LI Lijuan Changchun University of Science and TechnologyChangchun Jilin 130022China 
CAO Guohua Changchun University of Science and TechnologyChangchun Jilin 130022China 
摘要点击次数: 510
全文下载次数: 315
中文摘要:
      A method for extracting optical parameters of plastics materials based on terahertz time domain spectroscopy is presented. The transmission-type Terahertz Time-Domain Spectroscopy(THz TDS) system is adopted to detect the refractive index and extinction coefficient on different plastic materials. Then the corresponding spectral information is obtained by Fourier transform of the terahertz time domain waveform of the sampling points, including the corresponding amplitude and phase information of the waveform. The optical parameter extraction model is built. By using the simplex optimization method, the curves of the refractive index and extinction coefficient for the plastic material are obtained. The experimental samples are made of different plastic parallel plate materials. The experimental results show that the optimization of optical parameters can improve their extraction accuracy, and the error of refractive index is ±0.005. Extraction technology with the simplex optimization method of optical parameter based on THz TDS can help to extract the optical parameters of engineering plastics. It is of great significance for the research of terahertz nondestructive testing.
英文摘要:
      A method for extracting optical parameters of plastics materials based on terahertz time domain spectroscopy is presented. The transmission-type Terahertz Time-Domain Spectroscopy(THz TDS) system is adopted to detect the refractive index and extinction coefficient on different plastic materials. Then the corresponding spectral information is obtained by Fourier transform of the terahertz time domain waveform of the sampling points, including the corresponding amplitude and phase information of the waveform. The optical parameter extraction model is built. By using the simplex optimization method, the curves of the refractive index and extinction coefficient for the plastic material are obtained. The experimental samples are made of different plastic parallel plate materials. The experimental results show that the optimization of optical parameters can improve their extraction accuracy, and the error of refractive index is ±0.005. Extraction technology with the simplex optimization method of optical parameter based on THz TDS can help to extract the optical parameters of engineering plastics. It is of great significance for the research of terahertz nondestructive testing.
引用本文:ZHANG Dandan,REN Jiaojiao,LI Lijuan,CAO Guohua.Terahertz Time-Domain Spectroscopy method for optical parameter extraction of plastic materials[J].太赫兹科学与电子信息学报,2017,15(6):916~920
DOI:10.11805/TKYDA201706.0916
学科分类代码:
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