Raman-based point and proximal detection and imaging

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


Despite massive international search efforts, the detection and identification of hazardous materials is still a persisting challenge. Here, a modular, compact Raman spectrometer for short distance detection and imaging of traces of explosives and related compounds was developed. It utilized green excitation sources (a laser pointer, or a hand-held laser) and the resultant beam was focused as point or line on particular samples. The ensuing signals were detected and employed for sensitive and selective detection of different liquids and individual particles, placed on a variety of substrates. Synchronization of sample movement with detector readout, allowed obtaining not only characteristic Raman signals but also Raman images of traces of different compounds. Imaging was carried out by point-mapping, photo-guided sampling/point-mapping and line-mapping, where the latter two approaches allowed detection and mapping of individual particles at considerably reduced sampling times. It is anticipated that realization of these operation modes can lead to improved performance and be applied for examination and identification of objects contaminated with harmful compounds. This suggests the possibility for future use of the setup as a fast, compact, and relatively low-cost system for detecting and mapping a variety of samples under lab conditions and, following additional improvements, for field measurements.

Original languageEnglish
Title of host publicationNext-Generation Spectroscopic Technologies XI
EditorsMark A. Druy, Steven M. Barnett, Luisa T.M. Profeta, Richard A. Crocombe, Abul K. Azad
ISBN (Electronic)9781510618251
StatePublished - 1 Jan 2018
EventNext-Generation Spectroscopic Technologies XI 2018 - Orlando, United States
Duration: 16 Apr 201818 Apr 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceNext-Generation Spectroscopic Technologies XI 2018
Country/TerritoryUnited States


  • Raman spectroscopy
  • explosives traces
  • photo-guided sampling
  • point and proximal detection
  • point- A nd line-detection and mapping

ASJC Scopus subject areas

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


Dive into the research topics of 'Raman-based point and proximal detection and imaging'. Together they form a unique fingerprint.

Cite this