Chemical recognition in terahertz time-domain spectroscopy and imaging
Date
2005
Authors
Fischer, B.
Hoffmann, M.
Helm, H.
Modjesch, G.
Jepsen, P.
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Type:
Journal article
Citation
Semiconductor Science and Technology, 2005; 20(7):s246-s253
Statement of Responsibility
B Fischer, M Hoffmann, H Helm, G Modjesch and P Uhd Jepsen
Conference Name
Abstract
In this paper, we present an overview of chemical recognition with ultrashort THz pulses. We describe the experimental technique and demonstrate how signals for chemical recognition of substances in sealed containers can be obtained, based on the broadband absorption spectra of the substances. We then discuss chemical recognition in combination with THz imaging and show that certain groups of biological substances may give rise to characteristic recognition signals. Finally, we explore the power of numerical prediction of absorption spectra of molecular crystals and illuminate some of the challenges facing state-of-the-art computational chemistry software.
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© 2005 Institute of Physics