Zhang, Z W*; Gardiner, T; Reid, D T* (2013) Mid-infrared dual-comb spectroscopy with an optical parametric oscillator. Opt. Lett., 38 (16). pp. 3148-3150.

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Abstract

We present the first implementation of mid-infrared dual-comb spectroscopy with an optical parametric oscillator. Methane absorption spectroscopy was demonstrated with a resolution of 0.2 cm-1 (5 GHz) at an acquisition time of ~10.4 ms over a spectral coverage at 2900-3050 cm-1. The average power from each individual mid-infrared comb line was ~1 µW, representing a power-level much greater than typical difference-frequency-generation sources. Mid-infrared dual-comb spectroscopy opens up unique opportunities to perform broadband spectroscopic measurements with high resolution, high requisition rate and high detection sensitivity.

Item Type:	Article
Keywords:	infrared spectrscopy, optical parametric oscillator
Subjects:	Environmental Measurement Environmental Measurement > Atmospheric Science, Emission and Security
Identification number/DOI:	10.1364/OL.38.003148
Last Modified:	02 Feb 2018 13:14
URI:	http://eprintspublications.npl.co.uk/id/eprint/5908

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