Terahertz spectral characteristics of biological tissues

Wei Liu; Cheng-zhen Lu; Zhao-feng Jiang; Ping Sun

doi:10.1117/12.2184275

1 July 2015 Terahertz spectral characteristics of biological tissues

Wei Liu, Cheng-zhen Lu, Zhao-feng Jiang, Ping Sun

Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 96551G (2015) https://doi.org/10.1117/12.2184275
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of

Abstract

The terahertz is an electromagnetic wave with non-ionization and low average power; therefore it is thought not to be hazardous to biological tissues. The terahertz waves can excite the vibration mode and rotation mode of macromolecules, and both amplitude and phase information of samples which are detected can be gotten and contrasted. Compared with visible and infrared light, it also has the advantage of low scattering and that the surface character and depth pattern of samples can be acquired at the same time, which makes it possible to measure tissues in vivo without any damage in the field of biomedicine. In this article, THz transmission and reflection spectra of liquid and solid samples are tested and analyzed based on THz-TDS (Terahertz time Domain Spectra system), including glucose solution and different kinds of biological tissue slices, etc. The optical parameter relations of different samples are acquired. Spectrum results are contrasted and discussed for two kinds THz systems. The results show that THz spectra of different samples are differentiable, and they can be described quantitatively.

Citation Download Citation

Wei Liu, Cheng-zhen Lu, Zhao-feng Jiang, and Ping Sun "Terahertz spectral characteristics of biological tissues", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 96551G (1 July 2015); https://doi.org/10.1117/12.2184275

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KEYWORDS

Terahertz radiation

Refractive index

Tissues

Glucose

Absorption

Water

Reflection

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