Detection of liquid hazardous molecules using linearly focused Raman spectroscopy

Soo Gyeong Cho; Jin Hyuk Chung

doi:10.1117/12.2020834

29 May 2013 Detection of liquid hazardous molecules using linearly focused Raman spectroscopy

Soo Gyeong Cho, Jin Hyuk Chung

Proceedings Volume 8721, Sensing for Agriculture and Food Quality and Safety V; 87210U (2013) https://doi.org/10.1117/12.2020834
Event: SPIE Defense, Security, and Sensing, 2013, Baltimore, Maryland, United States

Abstract

In security, it is an important issue to analyze hazardous materials in sealed bottles. Particularly, prompt nondestructive checking of sealed liquid bottles in a very short time at the checkpoints of crowded malls, stadiums, or airports is of particular importance to prevent probable terrorist attack using liquid explosives. Aiming to design and fabricate a detector for liquid explosives, we have used linearly focused Raman spectroscopy to analyze liquid materials in transparent or semi-transparent bottles without opening their caps. Continuous lasers with 532 nm wavelength and 58 mW/130 mW beam energy have been used for the Raman spectroscopy. Various hazardous materials including flammable liquids and explosive materials have successfully been distinguished and identified within a couple of seconds. We believe that our technique will be one of suitable methods for fast screening of liquid materials in sealed bottles.

Citation Download Citation

Soo Gyeong Cho and Jin Hyuk Chung "Detection of liquid hazardous molecules using linearly focused Raman spectroscopy", Proc. SPIE 8721, Sensing for Agriculture and Food Quality and Safety V, 87210U (29 May 2013); https://doi.org/10.1117/12.2020834

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