Active FTIR-based stand-off spectroscopy using a femtosecond optical parametric oscillator

Zhaowei Zhang; Rhea J. Clewes; Christopher R. Howle; Derryck T. Reid

doi:10.1364/OL.39.006005

Active FTIR-based stand-off spectroscopy using a femtosecond optical parametric oscillator

Zhaowei Zhang, Rhea J. Clewes, Christopher R. Howle, Derryck T. Reid

Research output: Contribution to journal › Article

30 Citations (Scopus)

Abstract

We presented the first demonstration of stand-off Fourier transform infrared (FTIR) spectroscopy using a broadband mid-infrared optical parametric oscillator, with spectral coverage over 2700-3200 cm(-1). For vapor-phase water and nitromethane (NM), stand-off spectra was recorded using a concrete target at from 1-m to 2-m range and showed good agreement with reference spectra, and in NM a normalized detection sensitivity of 15 ppm . m . Hz(-1/2) was obtained. Spectra from 50-mu L droplets of liquid thiodiglycol were detected at a stand-off distance of 2 m from aluminum, concrete and painted metal surfaces. Our results imply that OPO-based active FTIR stand-off spectroscopy is a promising new technique for the detection of industrial pollutants and the identification of chemical agents, explosives or other hazardous materials. (C) 2014 Optical Society of America

Original language	English
Pages (from-to)	6005-6008
Number of pages	4
Journal	Optics Letters
Volume	39
Issue number	20
DOIs	https://doi.org/10.1364/OL.39.006005
Publication status	Published - 15 Oct 2014

Keywords

FREQUENCY-COMB
SPECTROMETER

Access to Document

10.1364/OL.39.006005

Profiles

Derryck Telford Reid

D.T.Reid@hw.ac.uk

School of Engineering & Physical Sciences, Institute of Photonics and Quantum Sciences - Professor
School of Engineering & Physical Sciences - Professor

Person: Academic (Research & Teaching)

Cite this

Zhang, Z., Clewes, R. J., Howle, C. R., & Reid, D. T. (2014). Active FTIR-based stand-off spectroscopy using a femtosecond optical parametric oscillator. Optics Letters, 39(20), 6005-6008. https://doi.org/10.1364/OL.39.006005

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abstract = "We presented the first demonstration of stand-off Fourier transform infrared (FTIR) spectroscopy using a broadband mid-infrared optical parametric oscillator, with spectral coverage over 2700-3200 cm(-1). For vapor-phase water and nitromethane (NM), stand-off spectra was recorded using a concrete target at from 1-m to 2-m range and showed good agreement with reference spectra, and in NM a normalized detection sensitivity of 15 ppm . m . Hz(-1/2) was obtained. Spectra from 50-mu L droplets of liquid thiodiglycol were detected at a stand-off distance of 2 m from aluminum, concrete and painted metal surfaces. Our results imply that OPO-based active FTIR stand-off spectroscopy is a promising new technique for the detection of industrial pollutants and the identification of chemical agents, explosives or other hazardous materials. (C) 2014 Optical Society of America",

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