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.
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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|Item Type:||Conference Paper|
|Keywords:||Spatially Offset Raman Spectrometer , non-contact distance|
|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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