Component Spatial Pattern Analysis of Chemicals Using Terahertz Spectroscopic Imaging
We demonstrated the separation of the component spatial patterns of chemical samples in transillumination terahertz ~THz! images using known spectral curves. The images and spectral data were measured between 1.3 and 1.8 THz, using a widely tunable coherent THz-wave parametric oscillator source. This method could be effective for analyzing spatial patterns and the concentrations of components with various chemical compositions. © 2003 American Institute of Physics. @DOI: 10.1063/1.1595132 #