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Proceedings Paper

A phase feature extraction technique for terahertz reflection spectroscopy
Author(s): Cunlin Zhang; Hua Zhong; Liangliang Zhang
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Paper Abstract

We present a phase feature extraction technique for weakly polarized organic compounds in THz-RTDS by taking the second derivative of the phase of the signal beam with respect to frequency. In nitrogen purged environment this method doesn't require any reference. In real scenarios, a reference beam is applied only to remove the influence of atmospheric attenuation. This method offers a straightforward and speedy way to retrieve the absorption features in the reflection spectrum without the presence of the amplitude of the THz pulse or the settlement of a reference surface. It opens the pathways for the application of a more un-conventional THz emission mechanism and extends the capability of THz sensing technology into more practical sensing and imaging situations.

Paper Details

Date Published: 9 February 2009
PDF: 14 pages
Proc. SPIE 7158, 2008 International Conference on Optical Instruments and Technology: Microelectronic and Optoelectronic Devices and Integration, 71580Q (9 February 2009); doi: 10.1117/12.807220
Show Author Affiliations
Cunlin Zhang, Capital Normal Univ. (China)
Hua Zhong, Capital Normal Univ. (China)
Liangliang Zhang, Capital Normal Univ. (China)


Published in SPIE Proceedings Vol. 7158:
2008 International Conference on Optical Instruments and Technology: Microelectronic and Optoelectronic Devices and Integration

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