Abstract
We present the first demonstration of stand-off Fourier transform infrared spectroscopy using a broadband mid-infrared femtosecond optical parametric oscillator, with spectral coverage over 2700-3200 cm-1. Remote spectroscopy and chemical detection from 2700-3100 cm-1 is demonstrated for a thiodiglycol drop on concrete and anodized aluminum surfaces at a stand-off distance of 2 meters, as well as open-path spectroscopy of atmospheric water vapor from a concrete target at the same range. Comparison of the measured stand-off spectra with archived reference spectra for thiodiglycol and water vapor show good agreement. This technique provides greater spatial coherence and spectral brightness than a thermal source, and wider spectral coverage than a typical quantum-cascade laser, thereby presenting opportunities for application in the detection of industrial pollutants and the environmental identification of chemical warfare agents, explosives or other hazardous materials.
Original language | English |
---|---|
Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
Publisher | SPIE |
Volume | 9073 |
ISBN (Print) | 9781628410105 |
DOIs | |
Publication status | Published - 1 Jan 2014 |
Event | Chemical, Biological, Radiological, Nuclear, and Explosives Sensing XV - Baltimore, MD, United Kingdom Duration: 6 May 2014 → 8 May 2014 |
Conference
Conference | Chemical, Biological, Radiological, Nuclear, and Explosives Sensing XV |
---|---|
Abbreviated title | CBRNE |
Country/Territory | United Kingdom |
City | Baltimore, MD |
Period | 6/05/14 → 8/05/14 |
Keywords
- and remote detection of industrial pollutants
- explosives or other hazardous materials
- Fourier transform infrared spectroscopy
- mid-infrared
- open-path spectroscopy
- optical parametric oscillators
- Standoff spectroscopy
ASJC Scopus subject areas
- Applied Mathematics
- Computer Science Applications
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics