Concealed substance identification using a defocused inverse spatially offset Raman spectrometer
Cletus, Biju, Olds, William J., Izake, Emad L., Fredericks, Peter M., & Jaatinen, Esa (2011) Concealed substance identification using a defocused inverse spatially offset Raman spectrometer. In Baldwin, Ken (Ed.) International Quantum Electronics Conference and Conference on Lasers and Electro-Optics, Pacific Rim, 28 August - 1 September 2011, Sydney Convention & Exhibition Centre, Sydney, NSW.
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Abstract
We report an inverse Spatially Offset Raman Spectrometer capable of non-invasively identifying packaged substances from a distance. Usual inverse SORS spectrometer has a non-contact distance that is equivalent to the focal distance of the collection system. In this work we demonstrate the defocused geometry with a modified data analysis method capable of making inverse SORS measurements from a distance greater than the focal distance of the collection lenses. With the defocused geometry we were able to detect acetaminophen, concealed inside a 2 mm thick plastic bottle, at a non-contact distance of 30 cm.
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| ID Code: | 50035 |
|---|---|
| Item Type: | Conference Paper |
| Keywords: | Spatially Offset Raman Spectrometer , non-contact distance |
| DOI: | 10.1109/IQEC-CLEO.2011.6193922 |
| ISBN: | 9781457719394 |
| Subjects: | Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OPTICAL PHYSICS (020500) Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > ANALYTICAL CHEMISTRY (030100) |
| Divisions: | Current > Schools > School of Chemistry, Physics & Mechanical Engineering Current > QUT Faculties and Divisions > Science & Engineering Faculty |
| Copyright Owner: | Copyright 2011 IEEE |
| Copyright Statement: | This work has been submitted to the IEEE for possible publication. Copyright may be transferred without notice, after which this version may no longer be accessible |
| Deposited On: | 02 May 2012 09:38 |
| Last Modified: | 25 Oct 2012 00:31 |
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