Identification of chemicals in the vapor phase by directly measuring absorption spectra through frequency-tuning a monochromatic THz source

Wei Shi; Yujie J. Ding

doi:10.1117/12.569460

14 December 2004 Identification of chemicals in the vapor phase by directly measuring absorption spectra through frequency-tuning a monochromatic THz source

Wei Shi, Yujie J. Ding

Author Affiliations +

Proceedings Volume 5584, Chemical and Biological Standoff Detection II; (2004) https://doi.org/10.1117/12.569460
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States

Abstract

By directly measuring the absorption spectrum of the chemicals in the vapor phase, we are able to fingerprint molecules. This process is made possible by frequency-tuning a widely-tunable THz source developed by us recently. In the THz region, we have demonstrated that we can use a set of the absorption peaks due to rotational transitions to truly fingerprint chemical species.

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Wei Shi and Yujie J. Ding "Identification of chemicals in the vapor phase by directly measuring absorption spectra through frequency-tuning a monochromatic THz source", Proc. SPIE 5584, Chemical and Biological Standoff Detection II, (14 December 2004); https://doi.org/10.1117/12.569460

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