Complementary spectroscopic studies of materials of security interest

Andrew Burnett; Wenhui Fan; Prashanth Upadhya; John Cunningham; Howell Edwards; Tasnim Munshi; Michael Hargreaves; Edmund Linfield; Giles Davies

doi:10.1117/12.689389

28 September 2006 Complementary spectroscopic studies of materials of security interest

Andrew Burnett, Wenhui Fan, Prashanth Upadhya, John Cunningham, Howell Edwards, Tasnim Munshi, Michael Hargreaves, Edmund Linfield, Giles Davies

Author Affiliations +

Proceedings Volume 6402, Optics and Photonics for Counterterrorism and Crime Fighting II; 64020B (2006) https://doi.org/10.1117/12.689389
Event: Optics/Photonics in Security and Defence, 2006, Stockholm, Sweden

Abstract

We demonstrate that, through coherent measurement of the transmitted terahertz frequency electric fields, broadband (0.3 - 8 THz) time-domain spectroscopy can be used to measure far-infrared vibrational modes of a range of drugs-of-abuse and high explosives that are of interest to the forensic and security services. Our results indicate that absorption features in these materials are highly sensitive to the structural and spatial arrangement of the molecules. Terahertz frequency spectra are also compared with high-resolution low-frequency Raman spectra to assist in understanding the low-frequency inter- and intra-molecular vibrational modes of the molecules.

Citation Download Citation

Andrew Burnett, Wenhui Fan, Prashanth Upadhya, John Cunningham, Howell Edwards, Tasnim Munshi, Michael Hargreaves, Edmund Linfield, and Giles Davies "Complementary spectroscopic studies of materials of security interest", Proc. SPIE 6402, Optics and Photonics for Counterterrorism and Crime Fighting II, 64020B (28 September 2006); https://doi.org/10.1117/12.689389

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available