Terahertz reflective spectroscopy feature extraction without phase error

Liangliang Zhang; Hua Zhong; Cunlin Zhang

doi:10.1117/12.899374

11 August 2011 Terahertz reflective spectroscopy feature extraction without phase error

Liangliang Zhang, Hua Zhong, Cunlin Zhang

Proceedings Volume 8195, International Symposium on Photoelectronic Detection and Imaging 2011: Terahertz Wave Technologies and Applications; 819502 (2011) https://doi.org/10.1117/12.899374
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

We propose two methods for avoiding misplacement phase error in terahertz reflection timedomain spectroscopy (THz-RTDS). The absorption signatures of the materials are extracted directly from the second-order derivative of the phase of the sample beam or the first derivative of the relative reflectance with respect to frequency. The techniques provide straightforward and fast solutions to solve the phase-retrieval problem in RTDS.

Citation Download Citation

Liangliang Zhang, Hua Zhong, and Cunlin Zhang "Terahertz reflective spectroscopy feature extraction without phase error", Proc. SPIE 8195, International Symposium on Photoelectronic Detection and Imaging 2011: Terahertz Wave Technologies and Applications, 819502 (11 August 2011); https://doi.org/10.1117/12.899374

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