Removal of water-vapor-induced fluctuations in T-ray signals: a preliminary study

W. Withayachumnankul; B. M. Fischer; S. P. Mickan; D. Abbott

doi:10.1117/12.724616

13 June 2007 Removal of water-vapor-induced fluctuations in T-ray signals: a preliminary study

W. Withayachumnankul, B. M. Fischer, S. P. Mickan, D. Abbott

Proceedings Volume 6603, Noise and Fluctuations in Photonics, Quantum Optics, and Communications; 660323 (2007) https://doi.org/10.1117/12.724616
Event: SPIE Fourth International Symposium on Fluctuations and Noise, 2007, Florence, Italy

Abstract

In an open-air setting, one source of fluctuations in a T-ray (THz) pulsed signal is attributed to water vapor. Fluctuations of this type are generally undesired, and so the water vapor is commonly removed in a closed chamber. Yet, in some applications a closed chamber is not feasible. This paper presents a preliminary study on a computational means to address the problem. Initially, the complex frequency response of water vapor is modeled from spectral line data. Using a deconvolution technique, together with fine tuning of the line strength at each frequency, the response is partially removed from a measured T-ray pulse, with minimal signal distortion.

Citation Download Citation

W. Withayachumnankul, B. M. Fischer, S. P. Mickan, and D. Abbott "Removal of water-vapor-induced fluctuations in T-ray signals: a preliminary study", Proc. SPIE 6603, Noise and Fluctuations in Photonics, Quantum Optics, and Communications, 660323 (13 June 2007); https://doi.org/10.1117/12.724616

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