Journal
CHEMICAL PHYSICS LETTERS
Volume 388, Issue 4-6, Pages 479-482Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2004.03.044
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Transmission and reflection measurements on various polymer films were performed in the THz frequency region, and the dielectric function was calculated by the Debye model to interpret the data. The epsilon(0) and epsilon(infinity) obtained in our analysis show good agreement with the epsilon(0) from the electric measurements in MHz-GHz frequency region, and the., calculated from the refractive index in the visible region. The abnormal dispersion was confirmed to appear in the THz frequency region, and the dispersion was not observed in non-polar polymers. This evidence shows the dispersion is due to the orientation polarization of polymers. (C) 2004 Elsevier B.V. All rights reserved.
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