Stand-off identification of aerosols using mid-infrared backscattering fourier-transform spectroscopy

Luke Maidment; Zhaowei Zhang; Christopher R Howle; Derryck Telford Reid

doi:10.1364/OL.41.002266

Stand-off identification of aerosols using mid-infrared backscattering fourier-transform spectroscopy

Luke Maidment^*, Zhaowei Zhang, Christopher R Howle, Derryck Telford Reid

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

We show that it is possible to identify the chemical composition of an aerosol by using Fourier-transform spectroscopy of backscattered mid-infrared light at a range of 0.2 m. An ultrafast mid-infrared optical parametric oscillator provides the illumination source for the measurement across a wavelength range from 3.2-3.55 μm containing characteristic optical absorption features for two different chemicals. Normalized detection sensitivity below 10 ppm m^-1 Hz^-12 is obtained.

Original language	English
Pages (from-to)	2266-2269
Number of pages	4
Journal	Optics Letters
Volume	41
Issue number	10
Early online date	10 May 2016
DOIs	https://doi.org/10.1364/OL.41.002266
Publication status	Published - 15 May 2016

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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abstract = "We show that it is possible to identify the chemical composition of an aerosol by using Fourier-transform spectroscopy of backscattered mid-infrared light at a range of 0.2 m. An ultrafast mid-infrared optical parametric oscillator provides the illumination source for the measurement across a wavelength range from 3.2-3.55 μm containing characteristic optical absorption features for two different chemicals. Normalized detection sensitivity below 10 ppm m-1 Hz-12 is obtained.",

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AB - We show that it is possible to identify the chemical composition of an aerosol by using Fourier-transform spectroscopy of backscattered mid-infrared light at a range of 0.2 m. An ultrafast mid-infrared optical parametric oscillator provides the illumination source for the measurement across a wavelength range from 3.2-3.55 μm containing characteristic optical absorption features for two different chemicals. Normalized detection sensitivity below 10 ppm m-1 Hz-12 is obtained.

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Stand-off identification of aerosols using mid-infrared backscattering fourier-transform spectroscopy

Abstract

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