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| Sielectric Properties of Terahertz Windows Materials for Bio-sample Measurement |
| SUN Yi-wen1, SU Hong2 |
1. Shenzhen Key Lab of Biomedical Engineering, School of Medicine, Shenzhen University, Guangdong Province Shenzhen 518060, China;
2. Shenzhen Key Lab of Laser Engineering, Shenzhen University,Guangdong Province Shenzhen 518060, China |
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Abstract We presented the dielectric properties of three materials for bio-sample measurement using THz transmission spectroscopy. The materials, PE, COC and PVDF, have sufficient transmittance. The results demonstrate that PVDF membranes are suitable media for THz transmission spectrum above 0.3 THz. However, it is not property to measure the solution sample because of the water existed after active processing by ethanol. In this paper, the refractive index, the absorption coefficient, and the complex dielectric functions in the THz region are compared for each material. From the measured dielectric properties, the loss mechanism of THz radiation for each material is also discussed.
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Received: 10 January 2016
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Corresponding Authors:
SUN Yi-wen. E-mail: yiwen07@bhotmail.com
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