Hyperspectral microscopy using an external cavity quantum cascade laser and its applications for explosives detection

M. C. Phillips, J. D. Suter, B. E. Bernacki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations

Abstract

Using infrared hyperspectral imaging, we demonstrate microscopy of small particles of the explosives compounds RDX, tetryl, and PETN with near diffraction-limited performance. The custom microscope apparatus includes an external cavity quantum cascade laser illuminator scanned over its tuning range of 9.13-10.53 μm in four seconds, coupled with a microbolometer focal plane array to record infrared transmission images. We use the hyperspectral microscopy technique to study the infrared absorption spectra of individual explosives particles, and demonstrate sub-nanogram detection limits.

Original languageEnglish (US)
Title of host publicationQuantum Sensing and Nanophotonic Devices IX
DOIs
StatePublished - 2012
Externally publishedYes
EventQuantum Sensing and Nanophotonic Devices IX - San Francisco, CA, United States
Duration: Jan 22 2012Jan 26 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8268
ISSN (Print)0277-786X

Conference

ConferenceQuantum Sensing and Nanophotonic Devices IX
Country/TerritoryUnited States
CitySan Francisco, CA
Period1/22/121/26/12

Keywords

  • explosives detection
  • infrared microscopy
  • Infrared spectroscopy
  • quantum cascade laser
  • tunable laser

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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