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Proceedings Paper

THz-Raman: accessing molecular structure with Raman spectroscopy for enhanced chemical identification, analysis, and monitoring
Author(s): Randy A. Heyler; James T. A. Carriere; Frank Havermeyer
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Paper Abstract

Structural analysis via spectroscopic measurement of rotational and vibrational modes is of increasing interest for many applications, since these spectra can reveal unique and important structural and behavioral information about a wide range of materials. However these modes correspond to very low frequency (~5cm-1 - 200cm-1, or 150 GHz-6 THz) emissions, which have been traditionally difficult and/or expensive to access through conventional Raman and Terahertz spectroscopy techniques. We report on a new, inexpensive, and highly efficient approach to gathering ultra-low-frequency Stokes and anti-Stokes Raman spectra (referred to as “THz-Raman”) on a broad range of materials, opening potential new applications and analytical tools for chemical and trace detection, identification, and forensics analysis. Results are presented on explosives, pharmaceuticals, and common elements that show strong THz-Raman spectra, leading to clear discrimination of polymorphs, and improved sensitivity and reliability for chemical identification.

Paper Details

Date Published: 29 May 2013
PDF: 7 pages
Proc. SPIE 8726, Next-Generation Spectroscopic Technologies VI, 87260J (29 May 2013); doi: 10.1117/12.2018136
Show Author Affiliations
Randy A. Heyler, Ondax, Inc. (United States)
James T. A. Carriere, Ondax, Inc. (United States)
Frank Havermeyer, Ondax, Inc. (United States)


Published in SPIE Proceedings Vol. 8726:
Next-Generation Spectroscopic Technologies VI
Mark A. Druy; Richard A. Crocombe, Editor(s)

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