Concealed substance identification using a defocused inverse Spatially Offset Raman Spectrometer

Biju Cletus, William Olds, Emad L. Izake, Peter M. Fredericks, Esa Jaatinen

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

2 Citations (Scopus)

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.
Original languageEnglish
Title of host publicationProceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics (Pacific Rim IQEC/CLEO 2011) incorporating ACOLS and ACOFT
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1339-1341
Number of pages3
ISBN (Print)9780977565771
DOIs
Publication statusPublished - 2011
Externally publishedYes
EventInternational Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim - Sydney
Duration: 28 Aug 20111 Sep 2011

Conference

ConferenceInternational Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim
CitySydney
Period28/08/111/09/11

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